Agilex™ 7 F-Series and I-Series FPGA Memory Subsystem IP User Guide

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ID 789389
Date 7/15/2024
Public
Document Table of Contents
Document Table of Contents x
1. About the Agilex™ 7 F-Series and I-Series FPGA Memory Subsystem IP 2. Introduction to Memory Subsystem IP 3. Memory Subsystem IP Architecture and Feature Description 4. Memory Subsystem Features 5. Memory Subsystem Interfaces and Signals 6. Memory Subsystem User Operations 7. Memory Subsystem Register Descriptions 8. Parameterizing the Memory Subsystem IP 9. Simulating a Design Example 10. Document Revision History for Agilex™ 7 F-Series and I-Series FPGA Memory Subsystem IP User Guide
1. About the Agilex™ 7 F-Series and I-Series FPGA Memory Subsystem IP x
1.1. Release Information
2. Introduction to Memory Subsystem IP x
2.1. Memory Subsystem Features 2.2. Getting Started with the Memory Subsystem IP 2.3. Memory Subsystem Resource Utilization
3. Memory Subsystem IP Architecture and Feature Description x
3.1. Memory-Specific Adaptor 3.2. Memory Subsystem Lookup Core IPs
3.1. Memory-Specific Adaptor x
3.1.1. Memory Subsystem Functional Description
3.1.1. Memory Subsystem Functional Description x
3.1.1.1. Write Data Replication 3.1.1.2. Bank Spreading 3.1.1.3. Memory Subsystem IP Scheduler 3.1.1.4. Memory Subsystem Auto-Precharge
3.2. Memory Subsystem Lookup Core IPs x
3.2.1. Memory Subsystem BCAM 3.2.2. Memory Subsystem TCAM 3.2.3. Memory Subsystem Multi-Bin Lookup (MBL)
3.2.1. Memory Subsystem BCAM x
3.2.1.1. Memory Subsystem BCAM Operations
3.2.2. Memory Subsystem TCAM x
3.2.2.1. Memory Subsystem TCAM Core Table 3.2.2.2. Memory Subsystem TCAM Operations
3.2.3. Memory Subsystem Multi-Bin Lookup (MBL) x
3.2.3.1. Memory Subsystem Multi-Bin Lookup (MBL) Functional Description 3.2.3.2. Pointers 3.2.3.3. Memory Subsystem MBL Operations 3.2.3.4. Row Collisions 3.2.3.5. Signature Collisions 3.2.3.6. Optimization Features
4. Memory Subsystem Features x
4.1. Memory-Specific Adaptor 4.2. External Memory Interface 4.3. Lookup IPs
4.2. External Memory Interface x
4.2.1. External Memory Interfaces IP Parameters Tab
4.3. Lookup IPs x
4.3.1. TCAM 4.3.2. BCAM 4.3.3. MBL
5. Memory Subsystem Interfaces and Signals x
5.1. AXI Memory Mapped (AXI-MM) Interface 5.2. AXI-Lite Interface 5.3. Lookup IPs 5.4. Request/Acknowledge and Reset Signals 5.5. Clock Signals
5.3. Lookup IPs x
5.3.1. TCAM AXI-ST Request Interface 5.3.2. TCAM AXI-ST Response Interface 5.3.3. TCAM AXI-Lite Interface 5.3.4. BCAM AXI-ST Request Interface 5.3.5. BCAM AXI-ST Response Interface 5.3.6. BCAM AXI-Lite Interface 5.3.7. MBL AXI-ST Request Interface 5.3.8. MBL AXI-ST Response Interface 5.3.9. MBL AXI-Lite Interface
6. Memory Subsystem User Operations x
6.1. Memory Specific Adaptor 6.2. Performing TCAM Operations 6.3. Performing BCAM Operations 6.4. Performing MBL Operations
6.2. Performing TCAM Operations x
6.2.1. TCAM Flush Operations 6.2.2. TCAM Insert Operations 6.2.3. TCAM Delete by Entry ID Operations 6.2.4. TCAM Delete by Key Operations 6.2.5. TCAM Lookup Operations through the AXI-Lite Interface 6.2.6. TCAM Lookup Operations through the AXI-ST Interface
6.3. Performing BCAM Operations x
6.3.1. BCAM Flush Operations 6.3.2. BCAM Insert Operations 6.3.3. BCAM Modify Operations 6.3.4. BCAM Delete Operations 6.3.5. BCAM Lookup Operations through the AXI-Lite Interface 6.3.6. BCAM Lookup Operations through the AXI ST Interface
6.4. Performing MBL Operations x
6.4.1. MBL Flush Operation 6.4.2. MBL Insert Key Operation 6.4.3. MBL Delete Key Operation 6.4.4. MBL Lookup Operation Using Key 6.4.5. MBL Modify Operation 6.4.6. MBL Modify Result Using Handle Operation 6.4.7. MBL Delete Key Using Handle Operation 6.4.8. MBL Lookup Using Handle Operation 6.4.9. MBL Insert Key if Not Present or Modify Result if Present Operation 6.4.10. MBL Get Handle Operation
7. Memory Subsystem Register Descriptions x
7.1. Device Feature List 7.2. Memory Base Sub-System Global CSR 7.3. BCAM Registers 7.4. TCAM Registers 7.5. MBL Registers
7.1. Device Feature List x
7.1.1. Device Feature Header
7.2. Memory Base Sub-System Global CSR x
7.2.1. Offset 0x0000 Version 7.2.2. Offset 0x0004 Feature List 7.2.3. Offset 0x0010 Memory Interfaces 0-7 7.2.4. Offset 0x0014 Memory Interfaces 8-15 7.2.5. Offset 0x0018 Memory Interfaces 16-23 7.2.6. Offset 0x001C Memory Interfaces 24-31 7.2.7. Offset 0x0020 Scratch Pad 7.2.8. Offset 0x0030 Control Policy (Lower DWORD) 7.2.9. Offset 0x0034 Control Policy (Upper DWORD) 7.2.10. Offset 0x0038 Read Access Control Policy (Lower DWORD) 7.2.11. Offset 0x003C Read Access Control Policy (Upper DWORD) 7.2.12. Offset 0x0040 Write Access Control Policy (Lower DWORD) 7.2.13. Offset 0x0044 Write Access Control Policy (Upper DWORD) 7.2.14. Offset 0x0050 Memory Status Bitmask 0 7.2.15. Offset 0x0054 Memory Status Bitmask 1 7.2.16. Offset 0x0058 Memory Ready Status 0 7.2.17. Offset 0x005C Memory Ready Status 1 7.2.18. Offset 0x0060 Memory Error Status 0 7.2.19. Offset 0x0064 Memory Error Status 1
7.3. BCAM Registers x
7.3.1. Device Feature Header (DFH)-Specific Registers 7.3.2. General BCAM Registers
7.3.1. Device Feature Header (DFH)-Specific Registers x
7.3.1.1. Field Names and Values
7.3.2. General BCAM Registers x
7.3.2.1. Version 7.3.2.2. Feature List 7.3.2.3. Interface Attribute Parameters 7.3.2.4. Interface Attribute Parameters 1 7.3.2.5. Scratch Pad 7.3.2.6. General Control (GEN_CTRL) 7.3.2.7. Management Control (MGMT_CTRL) 7.3.2.8. Hash function_0 seed 7.3.2.9. Hash function_1 seed 7.3.2.10. Hash function_2 seed 7.3.2.11. Warning 0 (WARNING_0) 7.3.2.12. Fatal Error (FATAL_ERROR_0) 7.3.2.13. Monitor 0 (MON_) 7.3.2.14. Total Entries (TOTAL_ENTRIES) 7.3.2.15. Max. Rehouse Iterations (Max_Rehouse_Iterations) 7.3.2.16. Statistics Control (STATS_CTRL) 7.3.2.17. Active Table Entries (TABLE_ENTRIES) 7.3.2.18. Key_N 7.3.2.19. Result_N
7.4. TCAM Registers x
7.4.1. Device Feature Header (DFH)-Specific Registers 7.4.2. General TCAM Registers
7.4.1. Device Feature Header (DFH)-Specific Registers x
7.4.1.1. Field Names and Values
7.4.2. General TCAM Registers x
7.4.2.1. Version 7.4.2.2. Feature List 7.4.2.3. Interface Attribute Parameters 7.4.2.4. Scratch 7.4.2.5. Gen_Ctrl 7.4.2.6. Mgmt_Ctrl 7.4.2.7. Entry 7.4.2.8. Warning_0 7.4.2.9. Fatal_Error_0 7.4.2.10. Mon_0 7.4.2.11. Key_N 7.4.2.12. Result_N 7.4.2.13. Match_N 7.4.2.14. Mask_N
7.5. MBL Registers x
7.5.1. MBL DFH 7.5.2. General MBL Registers 7.5.3. Version 7.5.4. Mbl_scratch 7.5.5. Mbl_gen_ctrl 7.5.6. Mbl_mgmt_ctrl 7.5.7. Mbl_key_handle 7.5.8. Mbl_nxt_handle_req 7.5.9. Mbl_nxt_handle 7.5.10. Mbl_warning_0 7.5.11. Mbl_fatal_0 7.5.12. Mbl_mon_0 7.5.13. Mbl_total_entries 7.5.14. Mbl_total_rehashes 7.5.15. Mbl_max_used_bins 7.5.16. Mbl_stats_ctrl 7.5.17. Mbl_stats_result 7.5.18. Mbl_max_lkup_latency 7.5.19. Mbl_max_rehash_index 7.5.20. Mbl_key 7.5.21. Mbl_res
8. Parameterizing the Memory Subsystem IP x
8.1. Launching the Memory Subsystem IP 8.2. Parameterization Flow
8.2. Parameterization Flow x
8.2.1. Defining the Number of Memory Interfaces, Type, and Location 8.2.2. Selecting the Required Application Interfaces 8.2.3. Mapping Application to Memory Interfaces (Data Flow) 8.2.4. Generating IPs within the Memory Subsystem 8.2.5. Parameterizing Required EMIF, CAM, and MSA IPs
8.2.5. Parameterizing Required EMIF, CAM, and MSA IPs x
8.2.5.1. Parameterizing the External Memory Interface (EMIF) IP 8.2.5.2. Parameterizing the Memory-Specific Adapter 8.2.5.3. Parameterizing the Content-Addressable Memory (CAM) IP 8.2.5.4. Parameterizing the External Memory Interfaces Calibration IP 8.2.5.5. Saving the IPs Within the Memory Subsystem 8.2.5.6. Propagation of Changes Across IPs within the Memory Subsystem IP
9. Simulating a Design Example x
9.1. Generating a Design Example 9.2. Generated Directory Structure for the Design Example 9.3. Steps for Simulation 9.4. Generating Traffic with the Test Engine IP
1. About the Agilex™ 7 F-Series and I-Series FPGA Memory Subsystem IP
2. Introduction to Memory Subsystem IP
3. Memory Subsystem IP Architecture and Feature Description
4. Memory Subsystem Features
5. Memory Subsystem Interfaces and Signals
6. Memory Subsystem User Operations
7. Memory Subsystem Register Descriptions
8. Parameterizing the Memory Subsystem IP
9. Simulating a Design Example
10. Document Revision History for Agilex™ 7 F-Series and I-Series FPGA Memory Subsystem IP User Guide

4.3.2. BCAM

If you connect an associative storage with a M20K memory interface in the high-level topology parameter editor, a CAM IP is enabled for configuration in the Platform Designer window shown after clicking Dive Into Packaged Subsystem.

If you select the Exact Match traffic type, the BCAM algorithm is used and the following parameters are available for you to configure.

Table 12.  BCAM Parameters
Parameter Default Description Range/Values
Number of Binary CAMs 0 Specifies the number of BCAMs. 1–4
BCAM Basic
Lookup key width 512 Specify lookup key width. 16-512
Result width 1024 Specify result width. 8-1024
Packet processing metadata width 19 Specify packet processing user metadata width. Up to 1024
User metadata width 1 Specify user metadata width. Up to 1024
Number of entries 256 Specify number of entries of the lookup table. 32-4196
BCAM Advanced
Retry limits for insertion 20 Specify the maximum number of retry attempts for an insert operation to solve hash collision. 20, 25
CRC hash seed 1 0x17372711 CRC polynomial seed for hashing. Three polynomial used in cuckoo filter algorithm.  
CRC hash seed 2 0x27172711 CRC polynomial seed for hashing. Three polynomial used in cuckoo filter algorithm.  
CRC hash seed 3 0x2d21b197 CRC polynomial seed for hashing. Three polynomial used in cuckoo filter algorithm.  
Global key mask 0xffffffffffffffff Global bitmask used to indicate which key bits are ignored during the search process. 0 to 0xffffffffffffffff
Enable ready latency on AXI ST interface. Disabled Enable ready latency on AXI ST interface.  
AXI ST valid path pipe stages 0 Defines the number of pipe stages required on the AXI ST interface valid path to the IP. 0–16
AXI ST ready path pipe stages 0 Defines the number of pipe stages required on the AXI ST interface ready path to the IP. 0–16
AXI ST interface ready latency 0 Defines the association between assertion of ready signal and the corresponding valid. 0–32
Enable AXI Lite interface ready latency Disabled Enable ready latency on AXI Lite interface. N/A
AXI Lite write address channel valid path pipe stages 0 Defines the number of pipe stages required on the AXI Lite interface write address channel valid path to the IP. 0–16
AXI Lite write address channel ready path pipe stages 0 Defines the number of pipe stages required on the AXI Lite interface write address channel ready path to the IP. 0–16
AXI Lite write address channel ready latency 0 Defines the association between assertion of ready signal and the corresponding valid. 0–32
AXI Lite write data channel valid path pipe stages 0 Defines the number of pipe stages required on the AXI Lite interface write data channel valid path to the IP. 0–16
AXI Lite write data channel ready path pipe stages 0 Defines the number of pipe stages required on the AXI Lite interface write data channel ready path to the IP. 0–16
AXI Lite write data channel ready latency 0 Defines the association between assertion of ready signal and the corresponding valid. 0–32
AXI Lite read address channel valid path pipe stages 0 Defines the number of pipe stages required on the AXI Lite interface read address channel valid path to the IP. 0–16
AXI Lite read address channel ready path pipe stages 0 Defines the number of pipe stages required on the AXI Lite interface read address channel ready path to the IP. 0–16
AXI Lite read address channel ready latency 0 Defines the association between assertion of ready signal and the corresponding valid. 0–32
BCAM Controls and Diagnostics
AXI Lite interface data width 32 SpecifyAXI Lite interface data width. 32, 64
Level Two Title