Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

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Date 4/01/2024
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Document Table of Contents
Document Table of Contents x
1. Agilex™ 5 Hard Processor System Technical Reference Manual Revision History 2. Introduction to the Hard Processor System 3. Micro Processor Unit (MPU) 4. Application Processor Subsystem 5. Peripheral Subsystem 6. System Manager 7. Clock Manager 8. Reset Manager 9. Power Management 10. Address Map 11. Bridges 12. Interfaces 13. System Interconnect and Firewalls 14. Error Checking and Correction Controller 15. CoreSight Debug and Trace 16. HPS Register Map A. Appendix
1. Agilex™ 5 Hard Processor System Technical Reference Manual Revision History x
1.1. Introduction to the HPS Revision History 1.2. MPU Revision History 1.3. CCU Revision History 1.4. GIC Revision History 1.5. SMMU Revision History 1.6. On-Chip RAM Revision History 1.7. EMAC Revision History 1.8. DMA Controller Revision History 1.9. NAND Flash Controller Revision History 1.10. SD/eMMC Revision History 1.11. Combo DLL PHY Revision History 1.12. USB 3.1 Gen1 Controller Revision History 1.13. USB 2.0 OTG Controller Revision History 1.14. I3C Controller Revision History 1.15. I2C Controller Revision History 1.16. SPI Controller Revision History 1.17. Timers Revision History 1.18. Watchdog Timers Revision History 1.19. UART Controller Revision History 1.20. GPIO Revision History 1.21. I/O Pin Multiplexing Revision History 1.22. System Manager Revision History 1.23. Clock Manager Revision History 1.24. Reset Manager Revision History 1.25. Power Management Revision History 1.26. Bridges Revision History 1.27. HPS Mailbox Revision History 1.28. MPFE and MPFE-lite Revision History 1.29. EMAC GMII through FPGA Fabric Revision History 1.30. System Interconnect and Firewalls Revision History 1.31. ECC Controller Revision History 1.32. CoreSight* Debug and Trace Revision History 1.33. HPS Register Map Revision History 1.34. Booting and Configuration Revision History 1.35. HPS Use of SDM QSPI Controller Revision History 1.36. Security Revision History
2. Introduction to the Hard Processor System x
2.1. HPS Differences Among Intel SoC Device Families 2.2. HPS Features 2.3. HPS System Integration 2.4. HPS IP Revisions 2.5. HPS Address Map and Register Definitions
2.3. HPS System Integration x
2.3.1. HPS Block Diagram 2.3.2. MPU Features 2.3.3. Application Processor Subsystem 2.3.4. Peripheral Subsystem 2.3.5. System Manager Features 2.3.6. Clock Manager Features 2.3.7. Reset Manager Features 2.3.8. Bridges Features 2.3.9. System Interconnect and Firewalls Features 2.3.10. ECC Controller Features 2.3.11. CoreSight Debug and Trace Features
2.3.2. MPU Features x
2.3.2.1. Arm Cortex-A76 Core Features 2.3.2.2. Arm* Cortex* -A55 Core Features 2.3.2.3. Arm* DynamIQ Shared Unit Features
2.3.3. Application Processor Subsystem x
2.3.3.1. CCU Features 2.3.3.2. GIC Features 2.3.3.3. SMMU Features 2.3.3.4. On-Chip RAM Features
2.3.4. Peripheral Subsystem x
2.3.4.1. EMAC Features 2.3.4.2. DMA Controller Features 2.3.4.3. NAND Flash Controller Features 2.3.4.4. Combo DLL PHY Features 2.3.4.5. USB 3.1 Gen1 Controller Features 2.3.4.6. USB 2.0 OTG Controller Features 2.3.4.7. I3C Controller Features 2.3.4.8. I2C Controller Features 2.3.4.9. SPI Controller Features 2.3.4.10. Timers Features 2.3.4.11. Watchdog Timers Features 2.3.4.12. UART Controller Features 2.3.4.13. GPIO Features 2.3.4.14. I/O Pin Multiplexing Features
2.3.4.1. EMAC Features x
2.3.4.1.1. XGMAC Core 2.3.4.1.2. Time Sensitive Networking 2.3.4.1.3. MAC Transaction Layer 2.3.4.1.4. DMA 2.3.4.1.5. Management Interface 2.3.4.1.6. Synchronized Multidrop Timestamp Gathering Hub 2.3.4.1.7. External Memory 2.3.4.1.8. PHY Interface
3. Micro Processor Unit (MPU) x
3.1. MPU Differences Among Intel SoC Device Families 3.2. MPU Use Cases 3.3. MPU Features 3.4. MPU System Integration 3.5. MPU Arm* Cortex* -A76 Core 3.6. MPU Arm* Cortex* -A55 Core 3.7. MPU Arm* DynamIQ Shared Unit 3.8. MPU Clock Domains 3.9. MPU Reset Domains 3.10. MPU Power Domains 3.11. MPU Address Map and Register Definitions
3.5. MPU Arm* Cortex* -A76 Core x
3.5.1. Arm Cortex-A76 Core Features 3.5.2. System Integration of the Arm* Cortex* -A76 Core 3.5.3. Functional Description of the Arm Cortex-A76 Core
3.5.3. Functional Description of the Arm Cortex-A76 Core x
3.5.3.1. Cortex* -A76 Core Configuration 3.5.3.2. Exception Levels 3.5.3.3. Virtualization 3.5.3.4. Memory Management Unit 3.5.3.5. Level 1 Memory System 3.5.3.6. Level 2 Memory System 3.5.3.7. Generic Interrupt Controller CPU Interface 3.5.3.8. Advanced Single Instruction Multiple Data and Floating Point Support 3.5.3.9. Cryptographic Extensions 3.5.3.10. Generic Timer 3.5.3.11. Cache Protection 3.5.3.12. Debug
3.5.3.2. Exception Levels x
3.5.3.2.1. Security State 3.5.3.2.2. Security Model
3.5.3.4. Memory Management Unit x
3.5.3.4.1. Translation Lookaside Buffer 3.5.3.4.2. Translation Match Process 3.5.3.4.3. Translation Table Walks
3.5.3.5. Level 1 Memory System x
3.5.3.5.1. Instruction Cache 3.5.3.5.2. Data Cache 3.5.3.5.3. Data Prefetching
3.5.3.11. Cache Protection x
3.5.3.11.1. Uncorrected Errors and Data Poisoning 3.5.3.11.2. Reliability, Availability, and Serviceability Error Types 3.5.3.11.3. Error Recording 3.5.3.11.4. Error Injection
3.5.3.12. Debug x
3.5.3.12.1. Breakpoints and Watchpoints 3.5.3.12.2. Performance Monitoring Unit 3.5.3.12.3. Activity Monitor Unit 3.5.3.12.4. Embedded Trace Macrocell
3.6. MPU Arm* Cortex* -A55 Core x
3.6.1. Arm* Cortex* -A55 Core Features 3.6.2. System Integration of the Arm* Cortex* -A55 Core 3.6.3. Functional Description of the Arm* Cortex* -A55 Core
3.6.3. Functional Description of the Arm* Cortex* -A55 Core x
3.6.3.1. Cortex* -A55 Core Configuration 3.6.3.2. Exception Levels 3.6.3.3. Virtualization 3.6.3.4. Memory Management Unit 3.6.3.5. Level 1 Memory System 3.6.3.6. Level 2 Memory System 3.6.3.7. Generic Interrupt Controller CPU Interface 3.6.3.8. Data Processing Unit 3.6.3.9. Generic Timer 3.6.3.10. Cache Protection 3.6.3.11. Debug
3.6.3.2. Exception Levels x
3.6.3.2.1. Security State 3.6.3.2.2. Security Model
3.6.3.4. Memory Management Unit x
3.6.3.4.1. Translation Lookaside Buffer 3.6.3.4.2. Translation Match Process 3.6.3.4.3. Translation Table Walks
3.6.3.10. Cache Protection x
3.6.3.10.1. Uncorrected Errors and Data Poisoning 3.6.3.10.2. Reliability, Availability and Serviceability Error Types 3.6.3.10.3. Error Reporting 3.6.3.10.4. Error Injection
3.6.3.11. Debug x
3.6.3.11.1. Breakpoints and Watchpoints 3.6.3.11.2. Performance Monitoring Unit 3.6.3.11.3. Embedded Trace Macrocell
3.7. MPU Arm* DynamIQ Shared Unit x
3.7.1. Arm* DynamIQ Shared Unit Features 3.7.2. System Integration of the Arm* DynamIQ Shared Unit 3.7.3. Functional Description of the Arm* DynamIQ Shared Unit
3.7.3. Functional Description of the Arm* DynamIQ Shared Unit x
3.7.3.1. DSU Configuration 3.7.3.2. Level 3 Cache 3.7.3.3. Interfaces 3.7.3.4. Debug
3.7.3.2. Level 3 Cache x
3.7.3.2.1. Cache Allocation Policy 3.7.3.2.2. Cache Partitioning 3.7.3.2.3. Cache Data RAM Latency 3.7.3.2.4. Cache Slices and Portions
3.7.3.4. Debug x
3.7.3.4.1. DebugBlock 3.7.3.4.2. Embedded Cross Trigger 3.7.3.4.3. Performance Monitoring Unit
4. Application Processor Subsystem x
4.1. Cache Coherency Unit (CCU) 4.2. Generic Interrupt Controller (GIC) 4.3. System Memory Management Unit (SMMU) 4.4. On-Chip RAM
4.1. Cache Coherency Unit (CCU) x
4.1.1. CCU Differences Among Intel SoC Device Families 4.1.2. CCU Use Cases 4.1.3. CCU Features 4.1.4. CCU System Integration 4.1.5. CCU Functional Description 4.1.6. CCU Programming Model 4.1.7. CCU Address Map and Register Definitions
4.1.5. CCU Functional Description x
4.1.5.1. Block Diagram 4.1.5.2. Ports 4.1.5.3. Cache Coherency Protocol 4.1.5.4. Addressing and Memory Regions 4.1.5.5. Connectivity 4.1.5.6. Snoop Filters 4.1.5.7. System Memory Cache 4.1.5.8. Credits and Resources 4.1.5.9. Quality of Service 4.1.5.10. Storage Protection 4.1.5.11. Exclusive Monitors 4.1.5.12. Firewall and Security 4.1.5.13. Interrupts 4.1.5.14. Clocks 4.1.5.15. Resets 4.1.5.16. Power Management 4.1.5.17. Shutdown of Interfaces 4.1.5.18. Error Handling 4.1.5.19. CCU Restrictions
4.1.5.1. Block Diagram x
4.1.5.1.1. Coherent Agent Interface Unit (CAIU) 4.1.5.1.2. Non-coherent Agent Interface Unit (NCAIU) 4.1.5.1.3. Distributed Coherence Engine (DCE) 4.1.5.1.4. Distributed Memory Interface (DMI) 4.1.5.1.5. Distributed Virtual Memory Engine (DVE) 4.1.5.1.6. Distributed I/O Interface (DII)
4.1.5.2. Ports x
4.1.5.2.1. DSU CHI-B Initiator Port 4.1.5.2.2. F2H ACE-Lite Initiator Port 4.1.5.2.3. GIC_M ACE-lite Initiator Port 4.1.5.2.4. TCU Ace-lite+DVM Initiator Port 4.1.5.2.5. CCU_IOM ACE-Lite Initiator Port 4.1.5.2.6. CCU_DMI0, CCU_DMI1 1AXI4 Target Ports 4.1.5.2.7. CCU_IOS AXI Target Port 4.1.5.2.8. MPFE CSR AXI Target Port 4.1.5.2.9. GIC AXI Target Port 4.1.5.2.10. OCRAM AXI Target Port
4.1.5.3. Cache Coherency Protocol x
4.1.5.3.1. Coherent Read Request 4.1.5.3.2. Coherent Clean Request 4.1.5.3.3. Coherent Write Request
4.1.5.4. Addressing and Memory Regions x
4.1.5.4.1. Ncore Register Space 4.1.5.4.2. General Purpose Address Space 4.1.5.4.3. Boot Address Space 4.1.5.4.4. Interleaving
4.1.5.4.2. General Purpose Address Space x
4.1.5.4.2.1. Address Map When Using a Single SDRAM Channel 4.1.5.4.2.2. Address Map When Using Multiple SDRAM Channels
4.1.5.12. Firewall and Security x
4.1.5.12.1. OCRAM Firewall 4.1.5.12.2. GIC Firewall 4.1.5.12.3. Service Network Access 4.1.5.12.4. AXI APROT Tunneling
4.1.5.15. Resets x
4.1.5.15.1. Q-Channel
4.1.5.18. Error Handling x
4.1.5.18.1. Correctable Errors 4.1.5.18.2. Uncorrectable Errors
4.1.5.19. CCU Restrictions x
4.1.5.19.1. CHI Support 4.1.5.19.2. AXI and ACE Support 4.1.5.19.3. Ordering Support
4.1.6. CCU Programming Model x
4.1.6.1. CCU Initialization 4.1.6.2. Boot Region CSR Default Settings 4.1.6.3. Error Registers
4.1.6.1. CCU Initialization x
4.1.6.1.1. Address Space Configuration 4.1.6.1.2. SMC Configuration
4.2. Generic Interrupt Controller (GIC) x
4.2.1. GIC Differences Among Intel® SoC Device Families 4.2.2. GIC Features 4.2.3. GIC System Integration 4.2.4. GIC Functional Description 4.2.5. GIC Programming Model 4.2.6. GIC Address Map and Register Definitions
4.2.4. GIC Functional Description x
4.2.4.1. Types of Interrupts 4.2.4.2. Clock Domains 4.2.4.3. Reset Domains
4.2.5. GIC Programming Model x
4.2.5.1. GIC Shared Peripheral Interrupts Map for the SoC HPS
4.3. System Memory Management Unit (SMMU) x
4.3.1. SMMU Differences Among Intel SoC Device Families 4.3.2. SMMU Use Cases 4.3.3. SMMU Features 4.3.4. SMMU System Integration 4.3.5. SMMU Signal Description 4.3.6. SMMU Functional Description 4.3.7. SMMU Programming Model 4.3.8. SMMU Address Map and Register Definitions 4.3.9. SMMU Design Guidelines and Examples
4.3.3. SMMU Features x
4.3.3.1. DTI Interface for TCU 4.3.3.2. Stage2 Translation 4.3.3.3. TLB 4.3.3.4. Bypass Mode 4.3.3.5. APB4 Programming Interface
4.3.4. SMMU System Integration x
4.3.4.1. TBU Instances 4.3.4.2. DTI Interconnect Topology 4.3.4.3. MMU-600 interfaces 4.3.4.4. IP Configuration
4.3.4.3. MMU-600 interfaces x
4.3.4.3.1. TCU Interfaces 4.3.4.3.2. TBU Interfaces 4.3.4.3.3. DTI Interconnect Interfaces
4.3.4.3.1. TCU Interfaces x
4.3.4.3.1.1. APB4 Programming Interface 4.3.4.3.1.2. ACE-Lite Manager for Table walk and DVM for TCU 4.3.4.3.1.3. LPI Interfaces for TCU 4.3.4.3.1.4. DTI Interface for TCU 4.3.4.3.1.5. SYSCO Interface for TCU 4.3.4.3.1.6. PMU snapshot Interface for TCU
4.3.4.3.2. TBU Interfaces x
4.3.4.3.2.1. ACE-Lite Subordinate Interface 4.3.4.3.2.2. ACE-Lite Manager Interface 4.3.4.3.2.3. DTI interface for TBU 4.3.4.3.2.4. LPI Interfaces for TBU 4.3.4.3.2.5. Interrupt Interfaces for TBU
4.3.4.3.3. DTI Interconnect Interfaces x
4.3.4.3.3.1. DTI Interconnect Switch Interfaces 4.3.4.3.3.2. DTI Interconnect Sizer Interfaces 4.3.4.3.3.3. DTI Interconnect Register Slice Interfaces
4.3.4.4. IP Configuration x
4.3.4.4.1. MMU-600 TCU Hardware Configuration 4.3.4.4.2. MMU-600 TBU Hardware Configurations 4.3.4.4.3. MMU-600 DTI Switch Hardware Configuration 4.3.4.4.4. MMU-600 DTI Async Bridge configuration
4.3.5. SMMU Signal Description x
4.3.5.1. MMU-600 TCU Configuration Signals 4.3.5.2. MMU-600 TBU Configuration Signals 4.3.5.3. TBU with Untranslated Interface
4.3.6. SMMU Functional Description x
4.3.6.1. Block Diagram 4.3.6.2. Functional Blocks 4.3.6.3. Functional Modes 4.3.6.4. Interrupts
4.3.6.3. Functional Modes x
4.3.6.3.1. Address Translation 4.3.6.3.2. Stage1 Translation 4.3.6.3.3. Stage2 Translation 4.3.6.3.4. TLB 4.3.6.3.5. Bypass Mode
4.3.6.4. Interrupts x
4.3.6.4.1. Interrupt Interfaces for TBU
4.3.7. SMMU Programming Model x
4.3.7.1. Initializing the SMMU 4.3.7.2. Assigning Stream IDs 4.3.7.3. Allocating the Command Queue 4.3.7.4. Allocating the Event Queue 4.3.7.5. Configuring the Stream Table 4.3.7.6. Initializing the Command Queue 4.3.7.7. Initializing the Event Queue 4.3.7.8. Invalidate TLBs and Configuration caches 4.3.7.9. Create Context Descriptor 4.3.7.10. Creating Stream Table Entry 4.3.7.11. Enabling the SMMU
4.3.8. SMMU Address Map and Register Definitions x
4.3.8.1. TBU Private Registers
4.3.8.1. TBU Private Registers x
4.3.8.1.1. TBU Stream Control Register[m][n] 4.3.8.1.2. TBU Stream ID Ax Register[m][n]
4.3.9. SMMU Design Guidelines and Examples x
4.3.9.1. F2SDRAM_TBU Special Handling 4.3.9.2. Translation Table Walk Sequence
4.3.9.2. Translation Table Walk Sequence x
4.3.9.2.1. Calculating Page Table Walks
4.4. On-Chip RAM x
4.4.1. On-Chip RAM Differences Among Intel SoC Device Families 4.4.2. On-Chip RAM Use Cases 4.4.3. On-Chip RAM Features 4.4.4. On-Chip RAM Functional Description 4.4.5. On-Chip RAM Address Map and Register Definitions
4.4.4. On-Chip RAM Functional Description x
4.4.4.1. Read and Write Double-Bit Bus Errors 4.4.4.2. On-Chip RAM Controller 4.4.4.3. On-Chip RAM Burst Support 4.4.4.4. Exclusive Access Support 4.4.4.5. Sub-word Accesses 4.4.4.6. On-Chip RAM Clocks 4.4.4.7. On-Chip RAM Resets 4.4.4.8. On-Chip RAM Initialization 4.4.4.9. ECC Protection
4.4.4.5. Sub-word Accesses x
4.4.4.5.1. Pipeline and Timing
5. Peripheral Subsystem x
5.1. Ethernet Media Access Controller 5.2. DMA Controller 5.3. NAND Flash Controller 5.4. SD/eMMC Host Controller 5.5. Combo DLL PHY 5.6. USB 3.1 Gen1 Controller 5.7. USB 2.0 OTG Controller 5.8. I3C Controller 5.9. I2C Controller 5.10. SPI Controller 5.11. Timers 5.12. Watchdog Timers 5.13. UART Controller 5.14. General-Purpose I/O Interface (GPIO) 5.15. Hard Processor System I/O Pin Multiplexing
5.1. Ethernet Media Access Controller x
5.1.1. EMAC Differences Among Intel SoC Device Families 5.1.2. EMAC Use Cases 5.1.3. EMAC Features 5.1.4. EMAC System Integration 5.1.5. EMAC Signal Description and Interfaces 5.1.6. EMAC Functional Description 5.1.7. EMAC Programming Model 5.1.8. EMAC Address Map and Register Definitions 5.1.9. EMAC Design Guidelines and Examples
5.1.3. EMAC Features x
5.1.3.1. XGMAC Core 5.1.3.2. Time Sensitive Networking 5.1.3.3. MAC Transaction Layer 5.1.3.4. DMA 5.1.3.5. Management Interface 5.1.3.6. Synchronized Multidrop Timestamp Gathering Hub 5.1.3.7. External Memory 5.1.3.8. PHY Interface
5.1.4. EMAC System Integration x
5.1.4.1. EMAC Block Diagram and Overview 5.1.4.2. EMAC System Integration
5.1.5. EMAC Signal Description and Interfaces x
5.1.5.1. HPS EMAC I/O Signals 5.1.5.2. FPGA EMAC I/O Signals 5.1.5.3. PHY Management Interface 5.1.5.4. SMTG Hub Signals and Interface 5.1.5.5. Timestamp Interface Signals 5.1.5.6. DMA Host Interface 5.1.5.7. System Manager Configuration Interface
5.1.5.3. PHY Management Interface x
5.1.5.3.1. MDIO Interface 5.1.5.3.2. I2C External PHY Management Interface
5.1.6. EMAC Functional Description x
5.1.6.1. External Memory 5.1.6.2. DMA Controller 5.1.6.3. Descriptor 5.1.6.4. Checksum Offload Engine (COE) 5.1.6.5. TCP Segmentation Offload 5.1.6.6. Packet Filtering 5.1.6.7. Management Counter 5.1.6.8. Flow Control 5.1.6.9. IEEE 1588-2008 Advanced Timestamp 5.1.6.10. TSN Features 5.1.6.11. SMTG Hub Time of Day Synchronization 5.1.6.12. Clocks 5.1.6.13. Resets 5.1.6.14. Interrupts
5.1.6.1. External Memory x
5.1.6.1.1. Transmit and Receive Data FIFO Buffers 5.1.6.1.2. TCP/IP Segmentation Offload Memory 5.1.6.1.3. Descriptor Cache Memory 5.1.6.1.4. Gate Control List Memory
5.1.6.2. DMA Controller x
5.1.6.2.1. Application Bus Burst Access 5.1.6.2.2. Application Data Buffer Alignment 5.1.6.2.3. Buffer Size Calculations 5.1.6.2.4. DMA Descriptor Fetch Operation 5.1.6.2.5. DMA TX Data Transfer Operation 5.1.6.2.6. DMA RX Data Transfer Operation 5.1.6.2.7. DMA Descriptor Write-Back Operation 5.1.6.2.8. DMA Start/Stop Operation 5.1.6.2.9. Memory Cache Size Requirements 5.1.6.2.10. Memory Cache Access Arbitration 5.1.6.2.11. DMA Error Handling
5.1.6.2.11. DMA Error Handling x
5.1.6.2.11.1. TX DMA Bus Error Handling Flow 5.1.6.2.11.2. RX DMA Bus Error Handling Flow
5.1.6.3. Descriptor x
5.1.6.3.1. Descriptor Structure 5.1.6.3.2. Descriptor Endianness 5.1.6.3.3. Transmit Descriptor Transmit Normal Descriptor (Read Format) Transmit Normal Descriptor (Write-Back Format) Transmit Context Descriptor 5.1.6.3.4. Receive Descriptor 5.1.6.3.5. Enhanced Descriptor for Time-Based Scheduling 5.1.6.3.6. Header Payload Split Support
5.1.6.5. TCP Segmentation Offload x
5.1.6.5.1. Description of the TSO Feature 5.1.6.5.2. DMA Operation with TSO Feature 5.1.6.5.3. TCP/IP Header Fields 5.1.6.5.4. Header and Payload Fields of Segmented Packets 5.1.6.5.5. Context Descriptor Sequence
5.1.6.6. Packet Filtering x
5.1.6.6.1. Source Address or Destination Address Filtering 5.1.6.6.2. VLAN Filtering 5.1.6.6.3. Extended VLAN Filtering 5.1.6.6.4. Layer 3 and Layer 4 Match Filtering
5.1.6.8. Flow Control x
5.1.6.8.1. Transmit Flow Control 5.1.6.8.2. Receive Flow Control
5.1.6.9. IEEE 1588-2008 Advanced Timestamp x
5.1.6.9.1. Delay Request-Response Mechanism 5.1.6.9.2. Peer-to-Peer PTP Transparent Clock Message Support 5.1.6.9.3. Clock Types 5.1.6.9.4. Reference Timing Source 5.1.6.9.5. System Time Register Module 5.1.6.9.6. Transmit Path Functions 5.1.6.9.7. Receive Path Functions
5.1.6.10. TSN Features x
5.1.6.10.1. Enhancements to Scheduled Traffic 5.1.6.10.2. Frame Preemption 5.1.6.10.3. Time-Based Scheduling 5.1.6.10.4. Credit Based Shaper
5.1.6.11. SMTG Hub Time of Day Synchronization x
5.1.6.11.1. SMTG Hub Overview 5.1.6.11.2. SMTG Hub Logic 5.1.6.11.3. SMTG Hub Integration with the HPS and FPGA
5.1.6.12. Clocks x
5.1.6.12.1. Clock Domain
5.1.6.13. Resets x
5.1.6.13.1. EMAC ECC RAM Reset 5.1.6.13.2. EMAC Software Reset
5.1.7. EMAC Programming Model x
5.1.7.1. System Level EMAC configurable Registers 5.1.7.2. EMAC HPS Interface Initialization 5.1.7.3. EMAC FPGA Interface Initialization 5.1.7.4. DMA Initialization 5.1.7.5. EMAC Initialization and Configuration 5.1.7.6. Performing Normal Receive and Transmit Operation 5.1.7.7. Stopping and Starting Transmission 5.1.7.8. Reconfiguring the DMA Registers 5.1.7.9. Switching to a New Descriptor List in the Receive DMA 5.1.7.10. Handling Bus Errors and Recovery 5.1.7.11. Setting up TCP Segmentation Offload 5.1.7.12. Setting up VLAN Filtering on Receive 5.1.7.13. Setting up Extended VLAN Filtering 5.1.7.14. Setting up the L3-L4 Filtering 5.1.7.15. Programming the SMTG Hub 5.1.7.16. Setting up the IEEE 1588 PTP Timestamping 5.1.7.17. Programming Guidelines for Flexible Pulse-Per-Second (PPS) Output 5.1.7.18. Programming the GCL and GCL Linked Registers 5.1.7.19. Programming Guidelines for EST 5.1.7.20. Enabling the Frame Preemption Function 5.1.7.21. Setting up the Time-Based Scheduling Function
5.1.7.1. System Level EMAC configurable Registers x
5.1.7.1.1. System Manager Configurable Registers 5.1.7.1.2. Clock Manager Configurable Registers 5.1.7.1.3. Reset Manager Configurable Registers
5.1.7.10. Handling Bus Errors and Recovery x
5.1.7.10.1. Transmit DMA Channel 5.1.7.10.2. Receive DMA Channel
5.1.7.14. Setting up the L3-L4 Filtering x
5.1.7.14.1. Writing to the Indirect Addressed Registers 5.1.7.14.2. Reading the Indirect Addressed Registers
5.1.7.16. Setting up the IEEE 1588 PTP Timestamping x
5.1.7.16.1. Initialization Guidelines for System Time Generation 5.1.7.16.2. Coarse Correction Method 5.1.7.16.3. Fine-Correction Method
5.1.7.17. Programming Guidelines for Flexible Pulse-Per-Second (PPS) Output x
5.1.7.17.1. Generating a Single Pulse on PPS 5.1.7.17.2. Generating a Pulse Train on PPS 5.1.7.17.3. Generating an Interrupt without Affecting the PPS
5.1.7.20. Enabling the Frame Preemption Function x
5.1.7.20.1. Receive Side Programming 5.1.7.20.2. Transmit Side Programming
5.1.9. EMAC Design Guidelines and Examples x
5.1.9.1. HPS RGMII System Integration 5.1.9.2. Interface to HPS IO Pins 5.1.9.3. RGMII Clock Skew Guidelines
5.1.9.3. RGMII Clock Skew Guidelines x
5.1.9.3.1. Use Case 1 – Utilize Programmable HPS I/O Delay Feature 5.1.9.3.2. Use Case 2 – Configure External PHY RGMII-Internal Delay (RGMII-ID) 5.1.9.3.3. Use Case 3 – Introduce Board Trace Delay
5.2. DMA Controller x
5.2.1. DMA Controller Differences Among Intel SoC Device Families 5.2.2. DMA Controller Use Cases 5.2.3. DMA Controller Features 5.2.4. DMA Controller System Integration 5.2.5. DMA Controller Functional Description 5.2.6. DMA Controller Address Map and Register Definitions
5.2.5. DMA Controller Functional Description x
5.2.5.1. Flow Control 5.2.5.2. Handshaking Interface 5.2.5.3. Interrupt Outputs 5.2.5.4. DMA Controller Peripheral Request Interface
5.2.5.4. DMA Controller Peripheral Request Interface x
5.2.5.4.1. Peripheral Request Interface Mapping
5.3. NAND Flash Controller x
5.3.1. NAND Flash Controller Differences Among Intel SoC Device Families 5.3.2. NAND Flash Controller Use Cases 5.3.3. NAND Flash Controller Features 5.3.4. NAND Flash Controller System Integration 5.3.5. NAND Flash Controller Signal Description 5.3.6. NAND Flash Controller Functional Description 5.3.7. NAND Flash Controller Programming Model 5.3.8. NAND Flash Controller Address Map and Register Definitions
5.3.5. NAND Flash Controller Signal Description x
5.3.5.1. Device Discovery Interface 5.3.5.2. Write Protection Interface 5.3.5.3. Interrupt Interface 5.3.5.4. DFI Interface
5.3.6. NAND Flash Controller Functional Description x
5.3.6.1. Block Diagram 5.3.6.2. Initialization Protocol (Device Discovery) 5.3.6.3. NAND Flash Addressing and Data Layout 5.3.6.4. Command Engine Functionality 5.3.6.5. ECC Engine Functionality 5.3.6.6. Control Data Mechanism 5.3.6.7. Remapping Mechanism 5.3.6.8. Write Protection Mechanism 5.3.6.9. Error and Special Scenarios Handling 5.3.6.10. Controller Fixed Parameters and Clock Frequencies Supported
5.3.6.3. NAND Flash Addressing and Data Layout x
5.3.6.3.1. NAND Flash Addressing 5.3.6.3.2. Data Layout 5.3.6.3.3. Layout Between Pages
5.3.6.4. Command Engine Functionality x
5.3.6.4.1. Command Engine Architecture 5.3.6.4.2. CDMA Work Mode 5.3.6.4.3. PIO Work Mode 5.3.6.4.4. Generic Work Mode 5.3.6.4.5. Extended Functionality in Command Engine
5.3.6.4.2. CDMA Work Mode x
5.3.6.4.2.1. Operation in CDMA Mode 5.3.6.4.2.2. Thread Synchronization Mechanism 5.3.6.4.2.3. NOP Descriptor
5.3.6.4.3. PIO Work Mode x
5.3.6.4.3.1. Operation in PIO Work Mode 5.3.6.4.3.2. Last Operation Status
5.3.6.4.4. Generic Work Mode x
5.3.6.4.4.1. Operation in Generic Work Mode 5.3.6.4.4.2. Last Operation Status 5.3.6.4.4.3. Switching To/From Generic Work Mode
5.3.6.4.5. Extended Functionality in Command Engine x
5.3.6.4.5.1. LUN Interleaving 5.3.6.4.5.2. Multipage Commands 5.3.6.4.5.3. Cache Commands 5.3.6.4.5.4. Multi-plane Commands 5.3.6.4.5.5. Thread Reset Commands 5.3.6.4.5.6. Timeout Functionality 5.3.6.4.5.7. Support of TLC (pSLC Mode) Devices
5.3.6.5. ECC Engine Functionality x
5.3.6.5.1. Error Correction 5.3.6.5.2. Sector Sizes 5.3.6.5.3. Bad Block Marker 5.3.6.5.4. Scrambling Support 5.3.6.5.5. Erased Page Detection Support
5.3.6.9. Error and Special Scenarios Handling x
5.3.6.9.1. Access to Protected Areas 5.3.6.9.2. Bus Error 5.3.6.9.3. NAND Device Error 5.3.6.9.4. Data Integrity Errors 5.3.6.9.5. ECC Errors 5.3.6.9.6. Descriptor/Command Error 5.3.6.9.7. DQS Error 5.3.6.9.8. Error Interrupt Generation 5.3.6.9.9. Recommended Error Handling Checking Software Flow
5.3.7. NAND Flash Controller Programming Model x
5.3.7.1. NAND Controller Registers Programming Model 5.3.7.2. Status Polling Configuration 5.3.7.3. Device Layout Configuration 5.3.7.4. Configure Multiplane and Cache Operations 5.3.7.5. ECC Enabling 5.3.7.6. Interrupts Configuration 5.3.7.7. Configuring Timing Registers 5.3.7.8. Switch from SDR to DDR Operation Mode 5.3.7.9. Switch from DDR to SDR Operation Mode 5.3.7.10. Slave DMA Programming 5.3.7.11. Data Pre-Fetching Mechanism 5.3.7.12. Data Integrity Mechanism 5.3.7.13. Enabling pSLC Mode for the TLC Devices
5.3.7.1. NAND Controller Registers Programming Model x
5.3.7.1.1. Programming SFR Registers 5.3.7.1.2. Programming Command Registers
5.4. SD/eMMC Host Controller x
5.4.1. SD/eMMC Differences Among Intel SoC Device Families 5.4.2. SD/eMMC Use Cases 5.4.3. SD/eMMC Features 5.4.4. SD/eMMC System Integration 5.4.5. SD/eMMC Signal Description 5.4.6. SD/eMMC Functional Description 5.4.7. SD/eMMC Programming Model 5.4.8. SD/eMMC Address Map and Register Definitions 5.4.9. SD/eMMC Design Guidelines and Examples
5.4.3. SD/eMMC Features x
5.4.3.1. Supported Standards 5.4.3.2. SD Support 5.4.3.3. eMMC Support 5.4.3.4. DMA Support
5.4.6. SD/eMMC Functional Description x
5.4.6.1. Block Diagram 5.4.6.2. Configuration 5.4.6.3. DMA Operation 5.4.6.4. Clocks 5.4.6.5. Resets 5.4.6.6. SD Voltage Switching 5.4.6.7. Timings on the SD/eMMC Interface 5.4.6.8. Command Queuing
5.4.6.1. Block Diagram x
5.4.6.1.1. Bus Interface Unit 5.4.6.1.2. Reset Control Module 5.4.6.1.3. Synchronization Module 5.4.6.1.4. Response Module 5.4.6.1.5. FIFO Interface Unit 5.4.6.1.6. Card Interface Unit 5.4.6.1.7. System Requester Interface 5.4.6.1.8. System Manager Interface 5.4.6.1.9. Host Settings Interface 5.4.6.1.10. Command Queue Settings
5.4.6.2. Configuration x
5.4.6.2.1. Host Capabilities
5.4.6.3. DMA Operation x
5.4.6.3.1. SDMA Operation 5.4.6.3.2. ADMA2 Operation 5.4.6.3.3. ADMA3 Operation 5.4.6.3.4. DMA Errors
5.4.6.5. Resets x
5.4.6.5.1. Controller Software Reset
5.4.6.7. Timings on the SD/eMMC Interface x
5.4.6.7.1. Tuning
5.4.6.7.1. Tuning x
5.4.6.7.1.1. Tuning Sequence for SD 5.4.6.7.1.2. Tuning Sequence for eMMC
5.4.6.8. Command Queuing x
5.4.6.8.1. Optional Modes of Operation 5.4.6.8.2. Task Execution Order
5.4.7. SD/eMMC Programming Model x
5.4.7.1. Combo PHY Register Interface 5.4.7.2. Pre-Initialization Sequence 5.4.7.3. Error Handling
5.4.7.1. Combo PHY Register Interface x
5.4.7.1.1. Read Access 5.4.7.1.2. Write Access
5.4.7.3. Error Handling x
5.4.7.3.1. Generic Operation Error Recovery 5.4.7.3.2. Command Queueing Error Recovery 5.4.7.3.3. Combo PHY Underrun/Overflow Error Recovery
5.4.9. SD/eMMC Design Guidelines and Examples x
5.4.9.1. SD Card Level Shifting
5.5. Combo DLL PHY x
5.5.1. Combo DLL PHY Differences Among Intel SoC Device Families 5.5.2. Combo DLL PHY Use Cases 5.5.3. Combo DLL PHY Features 5.5.4. Combo DLL PHY System Integration 5.5.5. Combo DLL PHY Signal Description 5.5.6. Combo DLL PHY Functional Description 5.5.7. Combo DLL PHY Programming Model 5.5.8. Combo DLL PHY Address Map and Register Definitions
5.5.6. Combo DLL PHY Functional Description x
5.5.6.1. Block Diagram 5.5.6.2. Operation Modes 5.5.6.3. Clocking 5.5.6.4. DLL Functionality 5.5.6.5. Write Data Path 5.5.6.6. Read Data Path 5.5.6.7. Generation of CE#, CLE, ALE, WP#, and RE# signals 5.5.6.8. Resets
5.5.6.4. DLL Functionality x
5.5.6.4.1. DLL Locking
5.5.6.5. Write Data Path x
5.5.6.5.1. DQS Write Signal Generation 5.5.6.5.2. Output Enable Signal Generation
5.5.6.6. Read Data Path x
5.5.6.6.1. Generation of Dynamic Termination Signal 5.5.6.6.2. Input Enable Signal Generation
5.5.7. Combo DLL PHY Programming Model x
5.5.7.1. Initialization Procedure 5.5.7.2. DLL Lock Debugging 5.5.7.3. DLL Secondary Delay Configuration 5.5.7.4. Handling FIFO DQS Overflow and Underrun 5.5.7.5. Tuning for SD/eMMC Interface
5.6. USB 3.1 Gen1 Controller x
5.6.1. USB 3.1 Gen1 Controller Differences Among Intel SoC Device Families 5.6.2. USB 3.1 Gen1 Controller Use Cases 5.6.3. USB 3.1 Gen1 Controller Features 5.6.4. USB 3.1 Gen1 Controller System Integration 5.6.5. USB 3.1 Gen1 Controller Functional Description 5.6.6. USB 3.1 Gen1 Controller Programming Model 5.6.7. USB 3.1 Gen1 Controller Address Map and Register Definitions 5.6.8. USB 3.1 Gen1 Controller Design Guidelines and Examples
5.6.3. USB 3.1 Gen1 Controller Features x
5.6.3.1. Unsupported Features
5.6.5. USB 3.1 Gen1 Controller Functional Description x
5.6.5.1. Manager Interface 5.6.5.2. AHB Subordinate Interface 5.6.5.3. Application interface Unit 5.6.5.4. Bus Management Unit 5.6.5.5. Packet FIFO Controller 5.6.5.6. RAM 5.6.5.7. MAC 5.6.5.8. DMA 5.6.5.9. Loopback 5.6.5.10. PHY Interfaces 5.6.5.11. USB 3.1 Gen1 Controller Clocks 5.6.5.12. USB 3.1 Gen1 Controller Resets
5.6.5.1. Manager Interface x
5.6.5.1.1. AXI Manager Interface
5.6.5.8. DMA x
5.6.5.8.1. Reception Flow Details 5.6.5.8.2. Transmission Flow Details
5.6.5.9. Loopback x
5.6.5.9.1. Software Loopback Mode 5.6.5.9.2. BIST Loopback Mode
5.6.5.10. PHY Interfaces x
5.6.5.10.1. USB 2.0 ULPI PHY 5.6.5.10.2. PIPE Interface 5.6.5.10.3. USB 3.1 Mode-switch Controller 5.6.5.10.4. USB Type-C Receptacle 5.6.5.10.5. Performance 5.6.5.10.6. Maximum USB Bandwidth
5.6.5.10.1. USB 2.0 ULPI PHY x
5.6.5.10.1.1. Signals
5.6.5.10.2. PIPE Interface x
5.6.5.10.2.1. IO Connection
5.6.5.10.3. USB 3.1 Mode-switch Controller x
5.6.5.10.3.1. USB3.1 Mode-switch Controller Signals
5.6.5.11. USB 3.1 Gen1 Controller Clocks x
5.6.5.11.1. Clock Enable 5.6.5.11.2. Clock Gating
5.6.5.12. USB 3.1 Gen1 Controller Resets x
5.6.5.12.1. Reset Requirements 5.6.5.12.2. Software Resets 5.6.5.12.3. Warm Reset
5.6.6. USB 3.1 Gen1 Controller Programming Model x
5.6.6.1. Programming Controller in Host Mode 5.6.6.2. Programming Controller in Device Mode
5.6.6.1. Programming Controller in Host Mode x
5.6.6.1.1. Initialization Phase 5.6.6.1.2. Host Controller Capability Registers 5.6.6.1.3. Programming Model 5.6.6.1.4. Device Initialization
5.6.6.2. Programming Controller in Device Mode x
5.6.6.2.1. Device Power-on or Soft Reset 5.6.6.2.2. Initialization on USB Reset 5.6.6.2.3. Initialization on Connect Done 5.6.6.2.4. Initialization on SetAddress Request 5.6.6.2.5. Initialization on SetConfiguration or SetInterface Request 5.6.6.2.6. Agilex 5 Programming Model 5.6.6.2.7. Controller as Host
5.6.8. USB 3.1 Gen1 Controller Design Guidelines and Examples x
5.6.8.1. USB 3.1 Gen1 Controller Wakeup and Power Control
5.7. USB 2.0 OTG Controller x
5.7.1. USB 2.0 OTG Controller Differences Among Intel SoC Device Families 5.7.2. USB 2.0 OTG Controller Use Cases 5.7.3. USB 2.0 OTG Controller Features 5.7.4. USB 2.0 OTG Controller System Integration 5.7.5. USB 2.0 OTG Controller Functional Description 5.7.6. USB 2.0 OTG Controller Programming Model 5.7.7. USB 2.0 OTG Controller Address Map and Register Definitions
5.7.4. USB 2.0 OTG Controller System Integration x
5.7.4.1. USB 2.0 ULPI PHY Signal Description
5.7.5. USB 2.0 OTG Controller Functional Description x
5.7.5.1. Distributed Virtual Memory Support 5.7.5.2. Initiator Interface 5.7.5.3. Target Interface 5.7.5.4. USB OTG Controller Components 5.7.5.5. DMA 5.7.5.6. Local Memory Buffer 5.7.5.7. Clocks 5.7.5.8. Resets 5.7.5.9. Interrupts
5.7.5.4. USB OTG Controller Components x
5.7.5.4.1. Application Interface Unit 5.7.5.4.2. Packet FIFO Controller 5.7.5.4.3. SPRAM 5.7.5.4.4. MAC 5.7.5.4.5. Wakeup and Power Control 5.7.5.4.6. PHY Interface Unit
5.7.5.4.4. MAC x
5.7.5.4.4.1. USB Transactions 5.7.5.4.4.2. Host Protocol 5.7.5.4.4.3. Device Protocol 5.7.5.4.4.4. OTG Protocol
5.7.5.7. Clocks x
5.7.5.7.1. Clock Gating
5.7.5.8. Resets x
5.7.5.8.1. Reset Requirements 5.7.5.8.2. Hardware Reset 5.7.5.8.3. Software Reset 5.7.5.8.4. Taking the USB 2.0 OTG Controller Out of Reset
5.7.6. USB 2.0 OTG Controller Programming Model x
5.7.6.1. Enabling SPRAM ECCs 5.7.6.2. Host Initialization 5.7.6.3. Host Transaction 5.7.6.4. Device Initialization 5.7.6.5. Device Transaction
5.7.6.5. Device Transaction x
5.7.6.5.1. IN Transactions 5.7.6.5.2. OUT Transactions 5.7.6.5.3. Control Transfers
5.8. I3C Controller x
5.8.1. I3C Controller Differences Among Intel SoC Device Families 5.8.2. I3C Controller Use Cases 5.8.3. I3C Controller Features 5.8.4. I3C Controller System Integration 5.8.5. I3C Controller Signal Description 5.8.6. I3C Controller Functional Description 5.8.7. I3C Controller Programming Model 5.8.8. I3C Controller Address Map and Register Definitions 5.8.9. I3C Controller Design Guidelines and Examples
5.8.5. I3C Controller Signal Description x
5.8.5.1. Interface to HPS I/O 5.8.5.2. FPGA Routing
5.8.6. I3C Controller Functional Description x
5.8.6.1. Device Address 5.8.6.2. In-Band Interrupt (IBI) 5.8.6.3. Simple-Transfer DMA (SDMA) Handshake 5.8.6.4. Interrupts in I3C Controller 5.8.6.5. Overview of Master Role in I3C 5.8.6.6. Overview of Slave Role in I3C
5.8.6.5. Overview of Master Role in I3C x
5.8.6.5.1. Dynamic Address Assignment (DAA) 5.8.6.5.2. In-Band Interrupt (IBI) Detection and Handling 5.8.6.5.3. I3C Slave Interrupt Request (SIR) 5.8.6.5.4. Disabling I3C Master 5.8.6.5.5. Aborting Transfers of I3C Master 5.8.6.5.6. I3C Master Request (MR) 5.8.6.5.7. Master Command Data Structures 5.8.6.5.8. Response Data Structure 5.8.6.5.9. Operation Modes of I3C Controller 5.8.6.5.10. SCL Generation and Timings Based on Bus Configuration 5.8.6.5.11. Derivation of I3C/I2C Timing Parameters from Timing Registers 5.8.6.5.12. Error Detection 5.8.6.5.13. Defining Byte Support 5.8.6.5.14. Broadcast CCCs in I2C Speed 5.8.6.5.15. BUS RESET Generation DMA Controller Interface
5.8.6.5.1. Dynamic Address Assignment (DAA) x
5.8.6.5.1.1. SETDASA (Format 1: Primary) 5.8.6.5.1.2. SETDASA (Format 2: Point-to-Point) 5.8.6.5.1.3. ENTDAA 5.8.6.5.1.4. SETAASA
5.8.6.5.3. I3C Slave Interrupt Request (SIR) x
5.8.6.5.3.1. SIR Response Control
5.8.6.5.6. I3C Master Request (MR) x
5.8.6.5.6.1. MR Response Control
5.8.6.5.7. Master Command Data Structures x
5.8.6.5.7.1. Transfer Command Data Structure 5.8.6.5.7.2. Transfer Argument Data Structure 5.8.6.5.7.3. Short Data Argument Data Structure 5.8.6.5.7.4. Address Assignment Command Data Structure
5.8.6.5.9. Operation Modes of I3C Controller x
5.8.6.5.9.1. Single Data Rate (SDR) Transfers in Master Mode 5.8.6.5.9.2. Broadcast CCC Write Transfers 5.8.6.5.9.3. Directed Write and Read Transfers 5.8.6.5.9.4. Directed CCC Transfer Targeted to Multiple Slaves 5.8.6.5.9.5. I3C Private Write or Read Transfers 5.8.6.5.9.6. I2C Private Write or Read Transfers 5.8.6.5.9.7. Implication of TX-FIFO Empty and RX-FIFO Full Conditions 5.8.6.5.9.8. Implication of TOC and ROC Bit Settings for SDR Transfers
5.8.6.5.12. Error Detection x
5.8.6.5.12.1. Detecting Error Type in the Processed Commands 5.8.6.5.12.2. SDR Error Detection and Recovery Methods
5.8.6.6. Overview of Slave Role in I3C x
5.8.6.6.1. Description of the Slave Role in I3C 5.8.6.6.2. I3C versus I2C Role Selection 5.8.6.6.3. Slave Role Related Registers 5.8.6.6.4. Handling Address Assignment 5.8.6.6.5. CCC Transfers with I3C Slave 5.8.6.6.6. Private Data Transfers 5.8.6.6.7. Handling Private Transmit (Master Read) Transfers 5.8.6.6.8. Slave Interrupt Request Generation 5.8.6.6.9. Master Request Generation 5.8.6.6.10. Disabling I3C Slave 5.8.6.6.11. Data Structure in I3C Slave
5.8.6.6.6. Private Data Transfers x
5.8.6.6.6.1. Overview of Private Data Transfers
5.8.6.6.11. Data Structure in I3C Slave x
5.8.6.6.11.1. Transmit Command Data Structure 5.8.6.6.11.2. Response Data Structure
5.8.7. I3C Controller Programming Model x
5.8.7.1. Initializing Common Registers 5.8.7.2. Initializing Master Registers 5.8.7.3. Enabling the Controller 5.8.7.4. Master Mode Operation 5.8.7.5. Initializing Slave Registers 5.8.7.6. Slave Mode Operation 5.8.7.7. DMA Controller Operation
5.8.7.1. Initializing Common Registers x
5.8.7.1.1. Programming Threshold Control Registers 5.8.7.1.2. Programming Interrupt Related Registers
5.8.7.2. Initializing Master Registers x
5.8.7.2.1. Programming DEVICE_ADDR Register 5.8.7.2.2. Programming Timing Registers
5.8.7.4. Master Mode Operation x
5.8.7.4.1. Slave Address Assignment 5.8.7.4.2. Receiving IBI (All types) 5.8.7.4.3. CCC Read/Write Transfers 5.8.7.4.4. Private Read/Write Transfers 5.8.7.4.5. Programming Flow to Prepare the Controller to Switch to Master Mode
5.8.7.4.1. Slave Address Assignment x
5.8.7.4.1.1. ENTDAA Transfer 5.8.7.4.1.2. Issue SETDASA CCC Command
5.8.7.4.3. CCC Read/Write Transfers x
5.8.7.4.3.1. Broadcast CCC Transfer in Master Mode 5.8.7.4.3.2. Directed CCC Transfer in Master Mode
5.8.7.5. Initializing Slave Registers x
5.8.7.5.1. Programming Interrupt Related Registers
5.8.7.6. Slave Mode Operation x
5.8.7.6.1. Private Receive (Master Write) Transfers in Slave Mode 5.8.7.6.2. Private Transmit (Master Read) Transfers in Slave Mode 5.8.7.6.3. Programming Flow for Generating Slave Interrupt Request 5.8.7.6.4. Programming Flow for Generating Master Request 5.8.7.6.5. Programming Flow to Prepare the Controller to Switch to Master Mode 5.8.7.6.6. Command Pipeline and Aggregation of Response Queue Threshold Interrupt 5.8.7.6.7. Error Recovery Flow 5.8.7.6.8. CCC Updated Interrupt Flow 5.8.7.6.9. Flow for Disable and TX/RX/CMD/Response Queue Reset
5.8.7.6.7. Error Recovery Flow x
5.8.7.6.7.1. S0-S5 Error Handling
5.8.9. I3C Controller Design Guidelines and Examples x
5.8.9.1. Guidelines for External SDA and SCL Signals via HPS I/O in the Board Design
5.9. I2C Controller x
5.9.1. I2C Controller Differences Among Intel SoC Device Families 5.9.2. I2C Controller Use Cases 5.9.3. I2C Controller Features 5.9.4. I2C Controller System Integration 5.9.5. I2C Controller Signal Description 5.9.6. I2C Controller Functional Description 5.9.7. I2C Controller Programming Model 5.9.8. I2C Controller Address Map and Register Definitions 5.9.9. I2C Controller Design Guidelines and Examples
5.9.6. I2C Controller Functional Description x
5.9.6.1. Feature Usage 5.9.6.2. Behavior 5.9.6.3. Protocol Details 5.9.6.4. Multiple Master Arbitration 5.9.6.5. Clock Frequency Configuration 5.9.6.6. SDA Hold Time 5.9.6.7. DMA Controller Interface 5.9.6.8. Clocks 5.9.6.9. Resets
5.9.6.2. Behavior x
5.9.6.2.1. START and STOP Generation 5.9.6.2.2. Combined Formats
5.9.6.3. Protocol Details x
5.9.6.3.1. START and STOP Conditions 5.9.6.3.2. Addressing Slave Protocol 5.9.6.3.3. Transmitting and Receiving Protocol 5.9.6.3.4. START BYTE Transfer Protocol
5.9.6.4. Multiple Master Arbitration x
5.9.6.4.1. Clock Synchronization
5.9.6.5. Clock Frequency Configuration x
5.9.6.5.1. Minimum High and Low Counts
5.9.6.5.1. Minimum High and Low Counts x
5.9.6.5.1.1. Calculating High and Low Counts
5.9.6.9. Resets x
5.9.6.9.1. Taking the I2C Controller Out of Reset
5.9.7. I2C Controller Programming Model x
5.9.7.1. Slave Mode Operation 5.9.7.2. Master Mode Operation 5.9.7.3. Disabling the I2C Controller 5.9.7.4. Abort Transfer 5.9.7.5. DMA Controller Operation
5.9.7.1. Slave Mode Operation x
5.9.7.1.1. Initial Configuration 5.9.7.1.2. Slave-Transmitter Operation for a Single Byte 5.9.7.1.3. Slave-Receiver Operation for a Single Byte 5.9.7.1.4. Slave-Transfer Operation for Bulk Transfers 5.9.7.1.5. Slave Programming Model
5.9.7.2. Master Mode Operation x
5.9.7.2.1. Initial Configuration 5.9.7.2.2. Dynamic IC_TAR or IC_10BITADDR_MASTER Update 5.9.7.2.3. Master Transmit and Master Receive 5.9.7.2.4. Master Programming Model
5.9.7.5. DMA Controller Operation x
5.9.7.5.1. Transmit FIFO Underflow 5.9.7.5.2. Transmit Watermark Level 5.9.7.5.3. Transmit FIFO Overflow 5.9.7.5.4. Receive FIFO Overflow 5.9.7.5.5. Receive Watermark Level 5.9.7.5.6. Receive FIFO Underflow
5.9.9. I2C Controller Design Guidelines and Examples x
5.9.9.1. I2C Interface Design Guidelines
5.10. SPI Controller x
5.10.1. SPI Controller Differences Among Intel SoC Device Families 5.10.2. SPI Controller Use Cases 5.10.3. SPI Controller Features 5.10.4. SPI Controller System Integration 5.10.5. SPI Controller Signal Description 5.10.6. SPI Controller Functional Description 5.10.7. SPI Controller Programming Model 5.10.8. SPI Controller Address Map and Register Definitions
5.10.5. SPI Controller Signal Description x
5.10.5.1. Interface to HPS I/O 5.10.5.2. FPGA Routing
5.10.6. SPI Controller Functional Description x
5.10.6.1. Protocol Details and Standards Compliance 5.10.6.2. Overview 5.10.6.3. Serial Bit-Rate Clocks 5.10.6.4. Transmit and Receive FIFO Buffers 5.10.6.5. SPI Interrupts 5.10.6.6. Transfer Modes 5.10.6.7. SPI Master 5.10.6.8. SPI Slave 5.10.6.9. Partner Connection Interfaces 5.10.6.10. DMA Controller Interface 5.10.6.11. Slave Interface 5.10.6.12. Clocks and Resets
5.10.6.3. Serial Bit-Rate Clocks x
5.10.6.3.1. SPI Master Bit-Rate Clock 5.10.6.3.2. SPI Slave Bit-Rate Clock
5.10.6.6. Transfer Modes x
5.10.6.6.1. Transmit and Receive 5.10.6.6.2. Transmit Only 5.10.6.6.3. Receive Only 5.10.6.6.4. EEPROM Read
5.10.6.7. SPI Master x
5.10.6.7.1. Glue Logic for Master Port ss_in_n 5.10.6.7.2. Multi-Master System 5.10.6.7.3. RXD Sample Delay 5.10.6.7.4. Data Transfers 5.10.6.7.5. Master SPI and SSP Serial Transfers 5.10.6.7.6. Master Microwire Serial Transfers
5.10.6.8. SPI Slave x
5.10.6.8.1. Slave SPI and SSP Serial Transfers 5.10.6.8.2. Serial Transfers
5.10.6.9. Partner Connection Interfaces x
5.10.6.9.1. Motorola SPI Protocol 5.10.6.9.2. Texas Instruments Synchronous Serial Protocol (SSP) 5.10.6.9.3. National Semiconductor Microwire Protocol
5.10.6.11. Slave Interface x
5.10.6.11.1. Control and Status Register Access 5.10.6.11.2. Data Register Access
5.10.6.12. Clocks and Resets x
5.10.6.12.1. Clock Gating 5.10.6.12.2. Taking the SPI Controller Out of Reset
5.10.7. SPI Controller Programming Model x
5.10.7.1. Master SPI and SSP Serial Transfers 5.10.7.2. Master Microwire Serial Transfers 5.10.7.3. Slave SPI and SSP Serial Transfers 5.10.7.4. Slave Microwire Serial Transfers 5.10.7.5. Software Control for Slave Selection 5.10.7.6. DMA Controller Operation
5.10.7.5. Software Control for Slave Selection x
5.10.7.5.1. Example: Slave Selection Software Flow for SPI Master 5.10.7.5.2. Example: Slave Selection Software Flow for SPI Slave
5.10.7.6. DMA Controller Operation x
5.10.7.6.1. Transmit FIFO Buffer Underflow 5.10.7.6.2. Transmit FIFO Watermark 5.10.7.6.3. Transmit FIFO Buffer Overflow 5.10.7.6.4. Receive FIFO Buffer Overflow 5.10.7.6.5. Choosing Receive Watermark Level 5.10.7.6.6. Receive FIFO Buffer Underflow
5.10.7.6.2. Transmit FIFO Watermark x
5.10.7.6.2.1. Example 1: Transmit FIFO Watermark Level = 64 5.10.7.6.2.2. Example 2: Transmit FIFO Watermark Level = 192
5.11. Timers x
5.11.1. Timers Differences Among Intel SoC Device Families 5.11.2. Timers Use Cases 5.11.3. Timers Features 5.11.4. Timers System Integration 5.11.5. Timers Functional Description 5.11.6. Timers Programming Model 5.11.7. Timers Address Map and Register Definitions
5.11.5. Timers Functional Description x
5.11.5.1. Clocks 5.11.5.2. Resets 5.11.5.3. Interrupts
5.11.6. Timers Programming Model x
5.11.6.1. Initialization 5.11.6.2. Enabling the Timers 5.11.6.3. Disabling the Timers 5.11.6.4. Loading the Timers Countdown Value 5.11.6.5. Timers Servicing Interrupts
5.11.6.5. Timers Servicing Interrupts x
5.11.6.5.1. Clearing the Interrupt 5.11.6.5.2. Checking the Interrupt Status 5.11.6.5.3. Masking the Interrupt
5.12. Watchdog Timers x
5.12.1. Watchdog Timers Differences Among Intel SoC Device Families 5.12.2. Watchdog Timers Use Cases 5.12.3. Watchdog Timers Features 5.12.4. Watchdog Timers System Integration 5.12.5. Watchdog Timers Functional Description 5.12.6. Watchdog Timers Programming Model 5.12.7. Watchdog Timers Address Map and Register Definitions
5.12.5. Watchdog Timers Functional Description x
5.12.5.1. Watchdog Timers Counter 5.12.5.2. Watchdog Timers Pause Mode 5.12.5.3. Watchdog Timers Clocks 5.12.5.4. Watchdog Timers Resets
5.12.6. Watchdog Timers Programming Model x
5.12.6.1. Setting the Timeout Period Values 5.12.6.2. Selecting the Output Response Mode 5.12.6.3. Enabling and Initially Starting a Watchdog Timers 5.12.6.4. Reloading a Watchdog Counter 5.12.6.5. Pausing a Watchdog Timers 5.12.6.6. Disabling and Stopping a Watchdog Timers 5.12.6.7. Watchdog Timers State Machine
5.13. UART Controller x
5.13.1. UART Controller Differences Among Intel SoC Device Families 5.13.2. UART Controller Use Cases 5.13.3. UART Controller Features 5.13.4. UART Controller System Integration 5.13.5. UART Controller Signal Description 5.13.6. UART Controller Functional Description 5.13.7. UART Controller Address Map and Register Definitions 5.13.8. UART Controller Design Guidelines and Example
5.13.5. UART Controller Signal Description x
5.13.5.1. HPS I/O Pins 5.13.5.2. FPGA Routing
5.13.6. UART Controller Functional Description x
5.13.6.1. FIFO Buffer Support 5.13.6.2. UART Serial Protocol 5.13.6.3. Automatic Flow Control 5.13.6.4. Clocks 5.13.6.5. Resets 5.13.6.6. UART Controller Interrupts 5.13.6.7. UART Controller DMA Controller Operation
5.13.6.7. UART Controller DMA Controller Operation x
5.13.6.7.1. Transmit FIFO Underflow 5.13.6.7.2. Transmit Watermark Level 5.13.6.7.3. Transmit FIFO Overflow 5.13.6.7.4. Receive FIFO Overflow 5.13.6.7.5. Receive Watermark Level 5.13.6.7.6. Receive FIFO Underflow
5.14. General-Purpose I/O Interface (GPIO) x
5.14.1. GPIO Differences Among Intel SoC Device Families 5.14.2. GPIO Use Cases 5.14.3. GPIO Features 5.14.4. GPIO System Integration 5.14.5. GPIO Functional Description 5.14.6. GPIO Programming Model 5.14.7. GPIO Address Map and Register Definitions
5.14.5. GPIO Functional Description x
5.14.5.1. Interrupts 5.14.5.2. Debounce Operation 5.14.5.3. Pin Directions 5.14.5.4. Taking the GPIO Interface Out of Reset
5.15. Hard Processor System I/O Pin Multiplexing x
5.15.1. I/O Pin Multiplexing Differences Among Intel SoC Device Families 5.15.2. I/O Pin Multiplexing Use Cases 5.15.3. I/O Pin Multiplexing Features 5.15.4. I/O Pin Multiplexing System Integration 5.15.5. I/O Pin Multiplexing Functional Description 5.15.6. I/O Pin Multiplexing Address Map and Register Definitions 5.15.7. I/O Pin Multiplexing Design Guidelines and Examples
5.15.5. I/O Pin Multiplexing Functional Description x
5.15.5.1. I/O Pins 5.15.5.2. FPGA Access 5.15.5.3. I/O Control Registers
5.15.5.3. I/O Control Registers x
5.15.5.3.1. Dedicated Pin MUX Registers 5.15.5.3.2. Dedicated Configuration Registers 5.15.5.3.3. FPGA Access MUX Registers 5.15.5.3.4. HPS JTAG Pin MUX Register
5.15.7. I/O Pin Multiplexing Design Guidelines and Examples x
5.15.7.1. Boundary Scan for HPS 5.15.7.2. HPS I/O Design Considerations
6. System Manager x
6.1. System Manager Differences Among Intel SoC Device Families 6.2. System Manager Use Cases 6.3. System Manager Features 6.4. System Manager System Integration 6.5. System Manager Address Map and Register Definitions 6.6. System Manager Revision History
6.4. System Manager System Integration x
6.4.1. Additional Module Control 6.4.2. FPGA Interface Enables 6.4.3. ECC and Parity Control 6.4.4. Preloader Handoff Information 6.4.5. Clocks 6.4.6. Resets
6.4.1. Additional Module Control x
6.4.1.1. DMA Controller 6.4.1.2. NAND Flash Controller 6.4.1.3. EMAC 6.4.1.4. USB 2.0 OTG Controller 6.4.1.5. USB 3.1 Controller 6.4.1.6. NOC Registers 6.4.1.7. Boot Scratch Space 6.4.1.8. I3C Controller 6.4.1.9. SD/eMMC Controller 6.4.1.10. GPIO Interconnect Between the HPS and FPGA 6.4.1.11. Watchdog Timer
7. Clock Manager x
7.1. Clock Manager Differences Among Intel SoC Device Families 7.2. Clock Manager Use Cases 7.3. Clock Manager Features 7.4. Clock Manager System Integration 7.5. Clock Manager Signal Description 7.6. Clock Manager Functional Description 7.7. Clock Manager Programming Model 7.8. Clock Manager Address Map and Register Definitions 7.9. Clock Manager Design Guidelines and Examples
7.2. Clock Manager Use Cases x
7.2.1. A76 Core Power and Performance Trade-off 7.2.2. A55 Core Power and Performance Trade-off 7.2.3. DSU Power and Performance Trade-off 7.2.4. Peripheral Clock Generation 7.2.5. Peripheral Power Optimization 7.2.6. Clock Tree Clock Sources 7.2.7. Boot Clock 7.2.8. Power-on-reset 7.2.9. Boot Mode 7.2.10. Disable Clocks Before Reset Assertion 7.2.11. PLL Configuration using JTAG
7.4. Clock Manager System Integration x
7.4.1. Top Level of the Clock Groups 7.4.2. Clock Manager Block Diagram
7.5. Clock Manager Signal Description x
7.5.1. Hardware-Managed Clocks 7.5.2. Software-Managed Clocks
7.6. Clock Manager Functional Description x
7.6.1. PLL Wrapper 7.6.2. MPU/DSU and APS/CCU Clock Groups 7.6.3. PSS Clock Group 7.6.4. MPFE Clock Group 7.6.5. EMAC and XGMAC Clock Group 7.6.6. USB31 Clock Group 7.6.7. SD/eMMC, NAND, and SoftPHY/ComboPHY 7.6.8. H2F User Clock Group 7.6.9. F2H User Clock Group 7.6.10. GPIO Debounce Clock Group 7.6.11. CoreSight Clocks 7.6.12. PSI Clock Group (to the SDM)
7.6.3. PSS Clock Group x
7.6.3.1. USB2OTG Clock Group
7.6.5. EMAC and XGMAC Clock Group x
7.6.5.1. EMAC Clocks 7.6.5.2. XGMAC Clocks
7.7. Clock Manager Programming Model x
7.7.1. Example Configuration of Registers for Default Operation (640 MHz CPU) 7.7.2. Example Configuration of Registers for Power Optimized (1000 MHz CPU) 7.7.3. Example Configuration of Registers for Performance Optimized (1800 MHz CPU) 7.7.4. Example Configuration of Registers for Power Optimized (1200 MHz CPU) 7.7.5. Summary Table of Registers Used to Program Clocks
8. Reset Manager x
8.1. Reset Manager Differences Among Intel SoC Device Families 8.2. Reset Manager Use Cases 8.3. Reset Manager Features 8.4. Reset Manager System Integration 8.5. Reset Manager Signal Description 8.6. Reset Manager Functional Description 8.7. Reset Manager Programming Model 8.8. Reset Manager Address Map and Register Definitions
8.5. Reset Manager Signal Description x
8.5.1. HPS Reset Domains 8.5.2. HPS Reset Domain to Signal Mapping 8.5.3. HPS Reset Priority
8.6. Reset Manager Functional Description x
8.6.1. System Reset High Level Flow 8.6.2. Hardware Reset Sequences 8.6.3. Software Reset Sequences
8.6.2. Hardware Reset Sequences x
8.6.2.1. POR De-assertion Sequence 8.6.2.2. Reset De-assertion Sequence 8.6.2.3. HPS Idle Sequence 8.6.2.4. Reset Assertion Sequence 8.6.2.5. Wait for Reset Requests to De-assert Sequence
8.6.3. Software Reset Sequences x
8.6.3.1. Normal Operation 8.6.3.2. Cold and Warm Reset Sequence 8.6.3.3. Debug Reset Sequence
8.7. Reset Manager Programming Model x
8.7.1. H2F Bridge Reset Sequence 8.7.2. LWH2F Bridge Reset Sequence 8.7.3. F2H Bridge Reset Sequence 8.7.4. F2SDRAM Bridge Reset Sequence 8.7.5. HPS_COLD_nRESET Pin Function
8.7.5. HPS_COLD_nRESET Pin Function x
8.7.5.1. FPGA Boot First 8.7.5.2. HPS Boot First 8.7.5.3. HPS Pin-triggered Cold Reset 8.7.5.4. HPS Mailbox-triggered Cold Reset
9. Power Management x
9.1. Power Management Differences Among Intel SoC Device Families 9.2. Power Management System Integration 9.3. Power Management Functional Description 9.4. Power Management Design Guidelines and Examples
9.3. Power Management Functional Description x
9.3.1. DSU L3 Cache Power Gating 9.3.2. CPU Core Power Gating 9.3.3. PSS Partition Power Management
10. Address Map x
10.1. Address Space Introduction 10.2. Total Address Spaces 10.3. MPU Address Space 10.4. NOC: Level 3 and Level 4 Address Space 10.5. FPGA Slaves Address Space 10.6. Lightweight FPGA Slaves Address Space 10.7. FPGA-to-HPS Address Space 10.8. FPGA-to-SDRAM Address Space
10.2. Total Address Spaces x
10.2.1. Total Address Map Graphical 10.2.2. Total Address Map Tabular 10.2.3. Total Address Map for F2H and F2SDRAM
11. Bridges x
11.1. Bridges Differences Among Intel SoC Device Families 11.2. Bridges Use Cases 11.3. Bridges Features 11.4. Bridges System Integration 11.5. Bridges Functional Description 11.6. Bridges Clocks and Resets 11.7. Bridges Address Map and Register Definitions 11.8. Bridges Design Guidelines and Examples
11.2. Bridges Use Cases x
11.2.1. FPGA-to-HPS Bridge 11.2.2. HPS-to-FPGA 11.2.3. Lightweight HPS-to-FPGA 11.2.4. FPGA-to-SDRAM
11.2.1. FPGA-to-HPS Bridge x
11.2.1.1. FPGA-to-HPS Initialization and Shutdown Procedure
11.5. Bridges Functional Description x
11.5.1. FPGA-to-HPS Bridge 11.5.2. HPS-to-FPGA Bridge 11.5.3. Lightweight HPS-to-FPGA Bridge 11.5.4. FPGA-to-SDRAM Bridge
11.5.4. FPGA-to-SDRAM Bridge x
11.5.4.1. Transaction Buffer Unit Interface
11.6. Bridges Clocks and Resets x
11.6.1. FPGA-to-HPS Bridge Clocks and Resets 11.6.2. HPS-to-FPGA Bridge Clocks and Resets 11.6.3. Lightweight HPS-to-FPGA Bridge Clocks and Resets 11.6.4. FPGA-to-SDRAM Clocks and Resets
11.8. Bridges Design Guidelines and Examples x
11.8.1. Recommended Starting Point for Interface Designs 11.8.2. Information on How to Configure and Use the Bridges 11.8.3. Bridges Example Transactions
11.8.3. Bridges Example Transactions x
11.8.3.1. FPGA-to-SDRAM Direct (Cache Non-Allocate) 11.8.3.2. FPGA-to-HPS CCU to Memory (Cache Non-Allocate) 11.8.3.3. FPGA-to-HPS CCU to Memory (Cache-Allocate) 11.8.3.4. FPGA-to-HPS CCU to Peripherals (Device Non-Bufferable) 11.8.3.5. FPGA-to-HPS Example Transactions Summary
12. Interfaces x
12.1. HPS Mailbox 12.2. MPFE and MPFE-lite 12.3. EMAC GMII through FPGA Fabric
12.1. HPS Mailbox x
12.1.1. HPS Mailbox Differences Among Intel SoC Device Families 12.1.2. HPS Mailbox Features 12.1.3. Accessing HPS Mailbox Services 12.1.4. HPS Mailbox System Integration 12.1.5. HPS Mailbox Address Map and Register Definitions
12.2. MPFE and MPFE-lite x
12.2.1. MPFE and MPFE-lite Terminology 12.2.2. MPFE and MPFE-lite Differences Among Intel SoC Families 12.2.3. MPFE and MPFE-lite Use Cases 12.2.4. MPFE and MPFE-lite Features 12.2.5. MPFE and MPFE-lite System Integration 12.2.6. MPFE and MPFE-lite Functional Description 12.2.7. MPFE and MPFE-lite Address Map and Register Definitions
12.2.3. MPFE and MPFE-lite Use Cases x
12.2.3.1. Fabric Bypass 12.2.3.2. One 16-bit SDRAM channel 12.2.3.3. One 32-bit SDRAM channel 12.2.3.4. Two 16-bit SDRAM channels utilizing a single IOBank 12.2.3.5. Two 16-bit or two 32-bit SDRAM channels utilizing two IOBank 12.2.3.6. Four 16-bit SDRAM channels utilizing two IOBank 12.2.3.7. Supports up to 512GB of memory 12.2.3.8. Supports sideband ECC on DDR4/5 12.2.3.9. Supports inband ECC on LPDDR4/5
12.2.5. MPFE and MPFE-lite System Integration x
12.2.5.1. Block Diagram (High Level) 12.2.5.2. IOBank Introduction
12.2.6. MPFE and MPFE-lite Functional Description x
12.2.6.1. Block Diagram 12.2.6.2. Interfaces 12.2.6.3. AxUSER Bit Connectivity 12.2.6.4. Fabric Bypass 12.2.6.5. FPGA-to-SDRAM bridge 12.2.6.6. FPGA-to-HPS bridge 12.2.6.7. MPFE NoC 12.2.6.8. MPFE-lite / MPFE-lite NoC 12.2.6.9. Address Gap Glue Logic 12.2.6.10. Resets Circuitry 12.2.6.11. Clocks Circuitry 12.2.6.12. Preserving SDRAM contents
12.3. EMAC GMII through FPGA Fabric x
12.3.1. GMII to RGMII through RGMII adapter via FPGA HVIOs 12.3.2. GMII to SGMII+ through Multi-Rate Ethernet PHY Adapter via FPGA IOs
12.3.1. GMII to RGMII through RGMII adapter via FPGA HVIOs x
12.3.1.1. Use Cases 12.3.1.2. System Integration 12.3.1.3. Architecture 12.3.1.4. Programming Model 12.3.1.5. RGMII Design Guidelines
12.3.1.3. Architecture x
12.3.1.3.1. HPS GMII to RGMII Adapter Intel FPGA IP 12.3.1.3.2. MDIO Management Interface 12.3.1.3.3. Timestamp Interface 12.3.1.3.4. RGMII HVIO Pin Assignment
12.3.1.5. RGMII Design Guidelines x
12.3.1.5.1. Utilize FPGA Programmable IOE Delay Feature 12.3.1.5.2. Configure External PHY RGMII-Internal Delay (RGMII-ID) 12.3.1.5.3. Introduce Board Trace Delay
13. System Interconnect and Firewalls x
13.1. System Interconnect and Firewalls Differences Among Intel SoC Device Families 13.2. System Interconnect and Firewalls Features 13.3. System Interconnect and Firewalls System Integration 13.4. System Interconnect and Firewalls Functional Description 13.5. System Interconnect and Firewalls Address Map and Register Definitions
13.4. System Interconnect and Firewalls Functional Description x
13.4.1. Initiator and Target Connectivity 13.4.2. Firewall and Security 13.4.3. Transaction Privilege 13.4.4. Arbitration and Quality-of-Service 13.4.5. Observation Network 13.4.6. System Interconnect Clocks 13.4.7. System Interconnect Resets
13.4.2. Firewall and Security x
13.4.2.1. Initiator Firewall and Security 13.4.2.2. Target Firewall and Security 13.4.2.3. F2H Bridge Firewall 13.4.2.4. MPFE Firewalls 13.4.2.5. Other Firewalls
13.4.2.4. MPFE Firewalls x
13.4.2.4.1. DDR Firewalls 13.4.2.4.2. CSR Firewall 13.4.2.4.3. F2SDRAM AxUSER Firewall
13.4.4. Arbitration and Quality-of-Service x
13.4.4.1. Priority Levels 13.4.4.2. Urgency and Pressure Signals 13.4.4.3. Passing QOS across NoCs 13.4.4.4. QoS Generators
13.4.5. Observation Network x
13.4.5.1. Interconnect Probes Generators 13.4.5.2. Packet Tracing, Profiling, Statistics, Alarms, and Error Logs
14. Error Checking and Correction Controller x
14.1. ECC Differences Among Intel SoC Device Families 14.2. ECC Controller Use Cases 14.3. ECC Controller Features 14.4. ECC Supported Memories 14.5. ECC Controller System Integration 14.6. ECC Controller Functional Description 14.7. ECC Controller Address Map and Register Definitions
14.6. ECC Controller Functional Description x
14.6.1. ECC Structure 14.6.2. Memory Data Initialization 14.6.3. Indirect Memory Access 14.6.4. Error Checking and Correction Algorithm 14.6.5. Error Logging 14.6.6. ECC Controller Interrupts 14.6.7. ECC Controller Initialization and Configuration 14.6.8. ECC Controller Clocks 14.6.9. ECC Controller Reset
14.6.1. ECC Structure x
14.6.1.1. RAM and ECC Memory Organization Example
14.6.3. Indirect Memory Access x
14.6.3.1. Watchdog Timer 14.6.3.2. Data Correction 14.6.3.3. Error Injection 14.6.3.4. Memory Testing
14.6.3.4. Memory Testing x
14.6.3.4.1. Register Interface Tests
14.6.3.4.1. Register Interface Tests x
14.6.3.4.1.1. Single-Bit Error Test for Word-Writeable Memories 14.6.3.4.1.2. Double-Bit Error Test
14.6.5. Error Logging x
14.6.5.1. Recent Error Address Registers 14.6.5.2. Single-Bit Error Occurrence 14.6.5.3. Single-Bit Error Look-Up Table
14.6.6. ECC Controller Interrupts x
14.6.6.1. Single-Bit Error Interrupts 14.6.6.2. Double-Bit Error Interrupt 14.6.6.3. Interrupt Testing 14.6.6.4. Interrupt Testing
14.6.6.1. Single-Bit Error Interrupts x
14.6.6.1.1. All Single-Bit Error Interrupt 14.6.6.1.2. LUT Overflow Interrupt 14.6.6.1.3. Counter Match Interrupt
15. CoreSight Debug and Trace x
15.1. CoreSight* Debug and Trace Differences Among Intel SoC Device Families 15.2. CoreSight Debug and Trace Use Cases 15.3. CoreSight Debug and Trace Features 15.4. CoreSight* Debug and Trace System Integration 15.5. CoreSight Debug and Trace Functional Description 15.6. CoreSight Debug and Trace Programming Model 15.7. CoreSight* Debug and Trace Address Map and Register Definitions
15.2. CoreSight Debug and Trace Use Cases x
15.2.1. CPU Static Debug 15.2.2. CPU Trace using Embedded Trace Macrocell
15.3. CoreSight Debug and Trace Features x
15.3.1. Debug 15.3.2. Trace
15.3.1. Debug x
15.3.1.1. CPU Performance Events 15.3.1.2. Cross Triggers 15.3.1.3. Fabric Coresight APB
15.3.2. Trace x
15.3.2.1. System Trace Macrocell 15.3.2.2. NoC Trace 15.3.2.3. Fabric Coresight Trace
15.3.2.3. Fabric Coresight Trace x
15.3.2.3.1. Fabric Trace using CoreSight Trace Network 15.3.2.3.2. Timestamp Correlation using ATB SYNCREQ 15.3.2.3.3. Timestamp Correlation using STM HWEVENT
15.5. CoreSight Debug and Trace Functional Description x
15.5.1. Debug APB 15.5.2. Trace Subsystem 15.5.3. Cross Triggers 15.5.4. Timestamp 15.5.5. Embedded Cross Trigger System 15.5.6. HPS Debug APB Interface 15.5.7. FPGA Interface 15.5.8. Interrupts
15.5.1. Debug APB x
15.5.1.1. ROM Tables & Topology Detection 15.5.1.2. DAP SWJ-DP JTAG I/O Connectivity 15.5.1.3. DAP SWJ-DP Debug Clock Enable Request 15.5.1.4. Debug Reset 15.5.1.5. DAP SWJ-DP TargetID 15.5.1.6. DAP TDO Output to SDM in Daisy Chain Mode
15.5.1.4. Debug Reset x
15.5.1.4.1. Debug Reset Request via Reset Manager CSR 15.5.1.4.2. Debug Reset Request via DAP SWJ-DP 15.5.1.4.3. Debug Reset Limitation
15.5.2. Trace Subsystem x
15.5.2.1. Embedded Trace Macrocell (ETM) 15.5.2.2. System Trace Macrocell (STM) 15.5.2.3. PSS NOC and MPFE NOC 15.5.2.4. AMBA* Trace Bus (ATB) 15.5.2.5. Trace Port Interface Unit (TPIU) 15.5.2.6. Embedded Trace FIFO (ETF) 15.5.2.7. Embedded Trace Router (ETR) 15.5.2.8. ATB IDs 15.5.2.9. NOC Trace Observability 15.5.2.10. STM HWEVENT Connectivity
15.5.2.9. NOC Trace Observability x
15.5.2.9.1. Error Probes 15.5.2.9.2. Packet Probes 15.5.2.9.3. Transaction Probes
15.5.3. Cross Triggers x
15.5.3.1. CTI-GT 15.5.3.2. CTI-NOC 15.5.3.3. CTI-5 15.5.3.4. CTI-FPGA 15.5.3.5. CTI-MPU
15.5.4. Timestamp x
15.5.4.1. Timestamp Interpolater
15.5.5. Embedded Cross Trigger System x
15.5.5.1. Cross Trigger Interface 15.5.5.2. Cross Trigger Matrix
15.5.7. FPGA Interface x
15.5.7.1. DAP 15.5.7.2. System Trace Macrocell (STM) 15.5.7.3. CTI-FPGA 15.5.7.4. Trace Port Interface Unit (TPIU) 15.5.7.5. CoreSight* Debug and Trace Clocks 15.5.7.6. CoreSight* Debug and Trace Resets
15.6. CoreSight Debug and Trace Programming Model x
15.6.1. CoreSight Component Address 15.6.2. CTI Trigger Connections to Outside the Debug System 15.6.3. Configuring Embedded Cross-Trigger Connections
15.6.2. CTI Trigger Connections to Outside the Debug System x
15.6.2.1. CTI 15.6.2.2. FPGA-CTI 15.6.2.3. L3-CTI
15.6.3. Configuring Embedded Cross-Trigger Connections x
15.6.3.1. Configuring Trigger Input 0 15.6.3.2. Triggering a Flush of Trace Data to the TPIU 15.6.3.3. Triggering an STM Message 15.6.3.4. Triggering a Breakpoint on CPU 1
A. Appendix x
A.1. Booting and Configuration A.2. HPS Use of SDM QSPI Controller A.3. Security A.4. Operational Status of the HPS to the FPGA Logic
A.1. Booting and Configuration x
A.1.1. Booting and Configuration Features A.1.2. Booting and Configuration FPGA Configuration First Mode Overview A.1.3. Booting and Configuration HPS Boot First Mode Overview A.1.4. Booting and Configuration Device Response to External Configuration and Reset Events
A.2. HPS Use of SDM QSPI Controller x
A.2.1. HPS Use of SDM QSPI Controller Differences Among Intel SoC Device Families A.2.2. HPS Use of SDM QSPI Controller Use Cases A.2.3. HPS Use of SDM QSPI Controller Features A.2.4. HPS Use of SDM QSPI Controller System Integration A.2.5. HPS Use of SDM QSPI Controller Signal Description A.2.6. HPS Use of SDM QSPI Controller Functional Description A.2.7. HPS Use of SDM QSPI Controller Programming Model A.2.8. HPS Use of SDM QSPI Controller Address Map and Register Definitions A.2.9. HPS Use of SDM QSPI Controller Design Guidelines and Examples
A.2.6. HPS Use of SDM QSPI Controller Functional Description x
A.2.6.1. Data Target Interface A.2.6.2. Register Target Interface A.2.6.3. Local Memory Buffer A.2.6.4. Arbitration between Direct/Indirect Access Controller and STIG A.2.6.5. Configuring the Flash Device A.2.6.6. Write Protection A.2.6.7. Data Target Sequential Access Detection A.2.6.8. Clocks A.2.6.9. Resets A.2.6.10. Interrupts
A.2.6.1. Data Target Interface x
A.2.6.1.1. Direct Access Mode A.2.6.1.2. Indirect Access Mode
A.2.6.1.1. Direct Access Mode x
A.2.6.1.1.1. Data Target Remapping Example A.2.6.1.1.2. AHB
A.2.6.1.2. Indirect Access Mode x
A.2.6.1.2.1. Indirect Read Operation A.2.6.1.2.2. Indirect Write Operation A.2.6.1.2.3. Consecutive Reads and Writes
A.2.6.2. Register Target Interface x
A.2.6.2.1. STIG Operation
A.2.7. HPS Use of SDM QSPI Controller Programming Model x
A.2.7.1. Setting Up the QSPI Flash Controller A.2.7.2. Indirect Read Operation A.2.7.3. Indirect Write Operation
A.2.9. HPS Use of SDM QSPI Controller Design Guidelines and Examples x
A.2.9.1. Ownership and Control of Quad SPI Controller A.2.9.2. Using a Single Flash for both FPGA Configuration and HPS Mass Storage A.2.9.3. Pin Features and Connections for SDM QSPI
A.3. Security x
A.3.1. Security Differences Among Intel SoC Device Families A.3.2. ARM Security ISA A.3.3. Secure Device Manager A.3.4. Configuration Bitstream A.3.5. HPS Secure Boot A.3.6. HPS Debug A.3.7. Available Security Documentation
A.4. Operational Status of the HPS to the FPGA Logic x
A.4.1. Overview A.4.2. Software Requirements A.4.3. Signal Behavior Event Diagrams A.4.4. SDM Gated Signals
A.4.1. Overview x
A.4.1.1. SDM Gated Signals A.4.1.2. HPS Events A.4.1.3. FPGA Events
A.4.2. Software Requirements x
A.4.2.1. FPGA Boot First Mode A.4.2.2. HPS Boot First Mode
A.4.3. Signal Behavior Event Diagrams x
A.4.3.1. FPGA User Mode Entry A.4.3.2. HPS Warm Reset Event A.4.3.3. HPS Cold Reset Event A.4.3.4. Watchdog Causes HPS Warm Reset Event A.4.3.5. Watchdog Causes HPS Cold Reset Event
1. Agilex™ 5 Hard Processor System Technical Reference Manual Revision History
2. Introduction to the Hard Processor System
3. Micro Processor Unit (MPU)
4. Application Processor Subsystem
5. Peripheral Subsystem
6. System Manager
7. Clock Manager
8. Reset Manager
9. Power Management
10. Address Map
11. Bridges
12. Interfaces
13. System Interconnect and Firewalls
14. Error Checking and Correction Controller
15. CoreSight Debug and Trace
16. HPS Register Map
A. Appendix

5.1.6.3.3. Transmit Descriptor

The DMA in EMAC requires at least one descriptor for a transmit packet. In addition to two buffer length fields, and two address pointers, the transmit descriptor has control fields which can be used to control the packet processing on per-transmit packet basis. The transmit normal descriptor has the following two formats: read format and write-back format

Transmit Normal Descriptor (Read Format)

The following figure shows the read format for a transmit normal descriptor. This is the format in which the software can prepare the descriptor contents and hand it over to the DMA engines of the EMAC.
Figure 58. Transmit Descriptor Read Format
The following tables describe the TDES0-3 fields for the transmit normal descriptor (read format).
Table 120.  TDES0 Normal Descriptor (Read Format)
Bit Name Description
31:0 BUF1AP

Buffer 1 address pointer or TSO header address pointer.

These bits indicate the physical address of Buffer 1. These bits indicate the TSO header address pointer when the following bits are set:
  • TSE bit of TDES3
  • FD bit of TDES3
Table 121.  TDES1 Normal Descriptor (Read Format)
Bit Name Description
31:0 BUF2AP

Buffer 2 or buffer 1 address pointer.

This bit indicates the physical address of buffer 2 when a descriptor ring structure is used.

There is no limitation for the buffer address alignment.

In 40- or 48-bit addressing mode, these bits indicate the most significant 8- or 16-bits of the buffer 1 address pointer.
Table 122.  TDES2 Normal Descriptor (Read Format)
Bit Name Description
31 IOC

Interrupt on completion.

This bit sets the TI bit in the DMA_CH(#i)_Status register after the present packet has been transmitted.

30

TTSE/

TMWD

Transmit timestamp enable or external TSO memory write disable.

This bit enables the IEEE1588 time stamping for transmit packet referenced by the descriptor, if TSE bit not set.

If TSE bit is set and external TSO memory is enabled, setting this bit disables external TSO memory writing for this packet.
29:16 B2L

Buffer 2 length.

The driver sets this field. When set, this field indicates buffer 2 length.
15:14 VTIR

VLAN tag insertion or replacement.

These bits request the MAC to perform VLAN tagging or untagging before transmitting the packets. If the packet is modified for VLAN tags, the MAC automatically recalculates and replaces the CRC bytes. The following list describes the values of these bits:

  • 2'b00: Do not add a VLAN tag.
  • 2'b01: Remove the VLAN tag from the packets before transmission. This option must be used only with the VLAN packets.
  • 2'b10: Insert a VLAN tag with the tag value programmed in the MAC_VLAN_Incl register or context descriptor.
  • 2'b11: Replace the VLAN tag in packets with the tag value programmed in the MAC_VLAN_Incl register or context descriptor. This option must be used only with the VLAN packets.

These bits are valid when the enable SA and VLAN insertion on TX option is selected while configuring the EMAC controller.
13:0 HL or B1L

Header length or buffer 1 length.

For header length, only bits [9:0] are taken. The size [13:0] is applicable only when interpreting buffer 1 length. If the TCP segmentation offload feature is enabled through the TSE bit of TDES3, this field is equal to the header length. When the TSE bit is set in TDES3, the header length includes the length in bytes from Ethernet source address till the end of the TCP header. The minimum value of header length is 0x30 (48 bytes) when SA insertion is enabled, or 0x36 (54 bytes), otherwise. If the value is less than this, TCP segmentation is not performed on the packet. The maximum header length supported for TSO feature is 1023 bytes.

If SA insertion is performed on this packet, the header length must be no less than 48 bytes, otherwise, it must be no less than 54 bytes.

If the TCP segmentation offload feature is not enabled, this field is equal to buffer 1 length.
Table 123.  TDES3 Normal Descriptor (Read Format)
Bit Name Description
31 OWN

Own bit.

When this bit is set, it indicates that the DMA owns the descriptor. When this bit is reset, it indicates that the application owns the descriptor. The DMA clears this bit after it completes the transfer of data given in the associated buffers.

30 CTXT

Context type.

This bit must be set to 1'b0 for normal descriptor.
29 FD

First descriptor.

When this bit is set, it indicates that the buffer contains the first segment of a packet.
28 LD

Last descriptor.

When this bit is set, it indicates that the buffer contains the last segment of the packet.

When this bit is set, the B1L or B2L field must have a non-zero value.
27:26 CPC

CRC pad control.

This field controls the CRC and pad insertion for TX packets. This field is valid only when the first descriptor bit (TDES3[29]) is set. The following list describes the values of bits[27:26]:

  • 2'b00: CRC and Pad Insertion

    The MAC appends the cyclic redundancy check (CRC) at the end of the transmitted packet of length greater than or equal to 60 bytes. The MAC automatically adds padding and CRC to a frame shorter than 60 bytes.

  • 2'b01: CRC insertion (disable pad insertion)

    The MAC appends the CRC at the end of the transmitted packet but it does not append padding. The application must ensure that the padding bytes are present in the packet being transferred from the Transmit buffer, that is, the packet being transferred from the Transmit buffer is of length greater than or equal to 60 bytes.

  • 2'b10: Disable CRC insertion

    The MAC does not append the CRC at the end of the transmitted packet. The application must ensure that the padding and CRC bytes are present in the packet being transferred from the Transmit buffer.

  • 2'b11: CRC replacement

    The MAC replaces the last four bytes of the transmitted packet with recalculated CRC bytes. The application must ensure that the padding and CRC bytes are present in the packet being transferred from the Transmit buffer.

Note: When the TSE bit is set, the MAC ignores this field because the CRC and pad insertion is always done for segmentation.
25:23 SAIC/

VNP

SA insertion control/Virtualized tunnel packet control.

These bits request the MAC to add or replace the source address field in the Ethernet packet with the value given in the MAC address 0 register. If the source address field is modified in a packet, the MAC automatically recalculates and replaces the CRC bytes.

Bit 25 specifies the MAC address register (1 or 0) value that is used for source address insertion or replacement.

The following list describes the values of Bits[24:23]:

  • 2'b00: Do not include the source address
  • 2'b01: Include or insert the source address. For reliable transmission, the application must provide frames without source addresses.
  • 2'b10: Replace the source address. For reliable transmission, the application must provide frames with source addresses.
  • 2'b11: Reserved

These bits are valid in the EMAC configurations when the enable SA and VLAN insertion on TX option is selected while configuring the EMAC controller and when the first segment control bit (TDES3 [29]) is set.

Virtualized tunnel packet (VNP):

When these bits are set to 3’b011, the current packet is treated as tunneled packet by the TSO and TxCOE functions in the transmit path. VNP is applicable only when Enable support for VxLAN/NVGRE packets is selected while configuring the EMAC controller and when bit FD is set.
Note: SA insertion control feature is not supported for tunneled packets.
22:19

SLOTNUM or

THL

SLOTNUM: Slot number control bits in AV mode.

These bits indicate the slot interval in which the data must be fetched from the corresponding buffers addressed by TDES0 or TDES1.

When the transmit descriptor is fetched, the DMA compares the slot number value in this field with the slot interval maintained in the RSN field of DMA_CH(#i)_Slot_Function_Control_Status. It fetches the data from the buffers only if a value matches. These bits are valid only for the AV channels.

TCP header length:

If the TSE bit is set, this field contains the length of the TCP header (in terms of 32-bit words). The minimum value of this field must be 5.

18 TSE

TCP segmentation enable.

When this bit is set, the DMA performs the TCP segmentation for a packet. This bit is valid only if the FD bit and TSE bit in the corresponding DMA_CH(#i)_Tx_Control are set. Otherwise, this bit is ignored and considered as 0.

17:16 CIC/TPL

Checksum insertion control or TCP payload length.

These bits control the checksum calculation and insertion. The following list describes the bit encoding:

  • 2'b00: Checksum insertion disabled.
  • 2'b01: Only IP header checksum calculation and insertion are enabled (both outer and inner headers in case of tunneled packet).
  • 2'b10: IP header checksum and payload checksum calculation and insertion are enabled, but pseudo-header checksum is not calculated in hardware (both outer and inner headers in case of tunneled packet).
  • 2'b11: IP header checksum and payload checksum calculation and insertion are enabled, and pseudo-header checksum is calculated in hardware (both outer and inner headers in case of tunneled packet).

This field is valid when the enable Transmit TCP/IP checksum offload option is selected and the TSE bit is reset.

When the TSE bit is set, this field contains the upper bits [17:16] of the TCP payload length. This allows the TCP packet length field to span across TDES3[17:0] to provide 256 KB packet length support.

When timestamping is enabled without one step timestamping feature and OSTC bit is set in the context descriptor, the content of this field is not effective and checksum is updated as though CIC field is set to 2'b11.
Note: In case of tunneled packets (as indicated by SAIC/VNP = 3'b011 and the VxLAN mode is enabled in the MAC transmit configuration register), the outer Header UDP checksum is always 0 as per the VxLAN standard compliance.
15 TPL

TCP payload length.

When the TSE bit is reset, this bit is reserved. When the TSE bit is set, this is bit 15 of the TCP payload length [17:0].

This field is valid only when the enable TCP segmentation offloading for TCP/IP packets option is selected while configuring the XGMAC controller.

14:0 FL/TPL

Packet length or TCP payload length.

This field is equal to the length of the packet to be transmitted in bytes. When the TSE bit is not set, this field is equal to the total length of the packet to be transmitted: Ethernet Header Length + TCP /IP Header Length – Preamble Length – SFD Length + Ethernet Payload Length.

When the TSE bit is set, this field is equal to the lower 15 bits of the TCP payload length. This length does not include Ethernet header or TCP/IP header length.

Transmit Normal Descriptor (Write-Back Format)

The EMAC processes the descriptor, acts on it and then writes back the status content. This operation indicates to the software that the descriptor is free and no longer required by the hardware. The EMAC writes only bits[31:24] of TDES3 during this operation and all the other fields of the descriptor in the host memory are not modified.

Figure 59. Transmit Descriptor Write-Back Format
Table 124.  TDES3 Normal Descriptor (Write-Back Format)
Bit Name Description
31 OWN

Own bit.

When this bit is set, it indicates that the EMAC DMA owns the descriptor. The DMA clears this bit when it writes back the descriptor. The DMA closes the descriptor when either of the following conditions are true:
  • The DMA completes the transfer of data indicated by the buffers from the host memory to the corresponding TX queue.
  • The B1L and B2L values are zero, indicating empty buffers.
30 CTXT

Context type.

This bit is set to 1'b0 for normal descriptor.
29 FD

First descriptor.

This bit indicates that the buffer contains the first segment of a packet.
28 LD

Last descriptor.

This bit is set 1'b1 for last descriptor of a packet. The DMA writes the status fields only in the last descriptor of the packet.

27 DERR

Descriptor error.

When this bit is set, it indicates that the descriptor content is incorrect.

The DMA sets this bit during write-back while closing the descriptor. The descriptor errors can be:
  • AXI bus error: This bit is asserted when AXI bus error response is received while processing the descriptor. This can be either when the descriptor is being fetched or when the packet data indicated by its buffer pointers are fetched.
    • When a transmit descriptor read from descriptor memory has FD, LD and CD bits set to 1, the transmit DMA terminates the ongoing DMA transfer (forcing a CRC error when partial packet is transmitted on the line) and enters stop state.
    • The DDE and TPS bits of corresponding DMA_CH(#i)_Status register is set to 1. Recovery Mechanism: Perform a software reset by programming the SWR field of the DMA_Mode register to 1.
  • All 1s
26:0 RSVD Reserved

Transmit Context Descriptor

The Transmit context descriptor can be provided any time before a packet descriptor. The context is valid for the current packet and subsequent packets. The context descriptor is used to provide the timestamps for one-step timestamp correction, VLAN tag ID for VLAN insertion feature, and SA insertion bit for SA insertion. Write back is done on a context descriptor only to reset the OWN bit and to set the CDE bit if necessary.
Note: The VLAN tag IDs and MSS values, provided by the application in a context descriptor with their corresponding valid bits set, are stored internally by the DMA. When the outer or inner VLAN tag is provided with the Valid bit set, the DMA always passes the last valid VLAN tag to the MTL. The application cannot invalidate the valid VLAN tag stored by the DMA. The VLAN tag is inserted or replaced based on the control inputs provided for the packet.
The inner VLAN tag control input is used only for the next packet that immediately follows the context descriptor. The application must provide a context descriptor before the normal descriptor of each packet for which the DMA must use the inner VLAN tag control input.
Figure 60. Transmit Context Descriptor
Table 125.  TDES0 Context Descriptor
Bit Name Description
31:0 TTSL

Transmit packet timestamp low or packet ID.

For one-step correction, the driver can provide the lower 32 bits of timestamp in this descriptor word. The DMA uses this value as the low word for doing one-step timestamp correction. This field is valid only if the OSTC and TCMSSV bits of TDES3 context descriptor are set.

When the OSTC bit is reset and PIDV is set, the lower 10-bits [9:0] indicate the packet ID which is used for 2-step time stamping.

Table 126.  TDES1 Context Descriptor
Bit Name Description
31:0 TTSH

Transmit packet timestamp high.

For one-step correction, the driver can provide the upper 32 bits of timestamp in this descriptor.

The DMA uses this value as the high word for doing one-step timestamp correction. This field is valid only if the OSTC and TCMSSV bits of TDES3 context descriptor are set.

Table 127.  TDES2 Context Descriptor
Bit Name Description
31:16 IVT

Inner VLAN tag.

When the IVLTV bit of TDES3 context descriptor is set and the TCMSSV and OSTC bits of TDES3 context descriptor are reset, TDES2[31:16] contains the inner VLAN tag to be inserted in the subsequent transmit packets.

15:14 RSVD Reserved
13:0 MSS

Maximum segment size.

When the enable TCP segmentation offloading for TCP/IP Packets option is selected, the driver can provide maximum segment size in this field. This segment size is used while segmenting the TCP/IP payload. This field is valid only if the TCMSSV bit of TDES3 context descriptor is set and the OSTC bit of the TDES3 context descriptor is reset.

Table 128.  TDES3 Context Descriptor (Read Format)
Bit Name Description
31 OWN

Own bit.

When this bit is set, it indicates that the EMAC DMA owns the descriptor. When this bit is reset, it indicates that the application owns the descriptor. The DMA clears this bit after it accepts the context descriptor contents.

30 CTXT

Context type.

This bit is set to 1’b1 for context descriptor.
29:28 RSVD Reserved
27 OSTC

One-Step timestamp correction enable.

When this bit is set, the DMA performs a one-step timestamp correction with reference to the timestamp values provided in TDES0 and TDES1.

26 TCMSSV

One-Step timestamp correction input or MSS valid.

When this bit and the OSTC bit are set, it indicates that the timestamp correction input provided in TDES0 and TDES1 is valid.

When the OSTC bit is reset and this bit and the TSE bit of TDES3 are set in subsequent normal descriptor, it indicates that the MSS input in TDES2 is valid.

25 PIDV

Packet ID valid.

When this bit is set and OSTC bit is reset, the bits [9:0] of TDES0 context descriptor indicate the packet ID for 2-step time stamping.

24 RSVD Reserved
23:20 RSVD Reserved
19:18 IVTIR

Inner VLAN tag insert or replace.

When this bit is set, these bits request the MAC to perform inner VLAN tagging or untagging before transmitting the packets. If the packet is modified for VLAN tags, the MAC automatically recalculates and replaces the CRC bytes.

The following list describes the values of these bits:
  • 2'b00: Do not add the inner VLAN tag.
  • 2'b01: Remove the inner VLAN tag from the packets before transmission. This option must be used only with the VLAN frames.
  • 2'b10: Insert an inner VLAN tag with the tag value programmed in the register or context descriptor.
  • 2'b11: Replace the inner VLAN tag in packets with the tag value programmed in the register or context descriptor. This option must be used only with the VLAN frames.

These bits are valid when the enable SA and VLAN Insertion on TX and enable double VLAN processing options are selected.
17 IVLTV

Inner VLAN tag valid.

When this bit is set, it indicates that the IVT field of TDES2 is valid.
16 VLTV

VLAN tag valid.

When this bit is set, it indicates that the VT field of TDES3 is valid.
15:0 VT

VLAN tag.

This field contains the VLAN tag to be inserted or replaced in the packet. This field is used as VLAN tag only when the VLTI bit of the MAC_VLAN_Incl register is set.

Table 129.  TDES3 Context Descriptor (Write-Back Format)
Bit Name Description
31 OWN

Own bit

When this bit is set, it indicates that the EMAC DMA owns the descriptor. When this bit is reset by the DMA, it indicates that the application owns the descriptor. The DMA clears this bit after it accepts the context descriptor contents.

30 CTXT

Context type

This bit is set to 1’b1 for context descriptor.
29 CDE

Context descriptor error

When this bit is set, it indicates that the context descriptor was provided in the incorrect sequence and the DMA ignored it. The DMA sets this bit during write-back while closing the context descriptor. When the context descriptor is read by DMA, this bit is reserved and must have a value 1‘b0.

28:0 RSVD Reserved
Level Two Title