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1. Acronyms
2. Introduction
3. IP Architecture and Functional Description
4. Advanced Features
5. Interfaces
6. Parameters
7. Testbench
8. Troubleshooting/Debugging
9. F-Tile Avalon Streaming Intel FPGA IP for PCI Express User Guide Archives
10. Revision History for the F-Tile Avalon Streaming Intel FPGA IP for PCI Express User Guide
A. Configuration Space Registers
B. Implementation of Address Translation Services (ATS) in Endpoint Mode
C. Packets Forwarded to the User Application in TLP Bypass Mode
D. Root Port Enumeration
E. Bifurcated Endpoint Support for Independent Resets
3.1. Architecture
3.2. Functional Description
3.3. Avalon-ST TX/RX
3.4. Interrupts
3.5. Completion Timeout
3.6. Hot Plug
3.7. Power Management
3.8. Configuration Output Interface (COI)
3.9. Configuration Intercept Interface (EP Only)
3.10. Hard IP Reconfiguration Interface
3.11. PHY Reconfiguration Interface
3.12. Page Request Service (PRS) (EP Only)
5.1. Overview
5.2. Clocks and Resets
5.3. Serial Data Interface
5.4. Avalon-ST Interface
5.5. Interrupt Interface
5.6. Hard IP Status Interface
5.7. Error Interface
5.8. 10-bit Tag Support Interface
5.9. Completion Timeout Interface
5.10. Power Management Interface
5.11. Hot Plug Interface (RP Only)
5.12. Configuration Output Interface
5.13. Configuration Intercept Interface (EP Only)
5.14. Hard IP Reconfiguration Interface
5.15. PHY Reconfiguration Interface
5.16. Page Request Service (PRS) Interface (EP Only)
5.17. FLR Interface Signals
5.18. PTM Interface Signals
5.19. VF Error Flag Interface Signals
5.20. VirtIO PCI Configuration Access Interface Signals
6.2.3.1. Device Capabilities
6.2.3.2. Link Capabilities
6.2.3.3. Legacy Interrupt Pin Register
6.2.3.4. MSI Capabilities
6.2.3.5. MSI-X Capabilities
6.2.3.6. Slot Capabilities
6.2.3.7. Latency Tolerance Reporting (LTR)
6.2.3.8. Process Address Space ID (PASID)
6.2.3.9. Device Serial Number Capability
6.2.3.10. Page Request Service (PRS)
6.2.3.11. Access Control Service (ACS) Capabilities
6.2.3.12. Power Management
6.2.3.13. Vendor Specific Extended Capability (VSEC) Registers
6.2.3.14. Precision Time Measurement (PTM)
6.2.3.15. Address Translation Services (ATS)
6.2.3.16. TLP Processing Hints (TPH)
6.2.3.17. VirtIO Parameters
6.2.3.18. Receiver Detection
7.6.1. ebfm_barwr Procedure
7.6.2. ebfm_barwr_imm Procedure
7.6.3. ebfm_barrd_wait Procedure
7.6.4. ebfm_barrd_nowt Procedure
7.6.5. ebfm_cfgwr_imm_wait Procedure
7.6.6. ebfm_cfgwr_imm_nowt Procedure
7.6.7. ebfm_cfgrd_wait Procedure
7.6.8. ebfm_cfgrd_nowt Procedure
7.6.9. BFM Configuration Procedures
7.6.10. BFM Shared Memory Access Procedures
7.6.11. BFM Log and Message Procedures
7.6.12. Verilog HDL Formatting Functions
A.3.1. Intel-Defined VSEC Capability Header (Offset 00h)
A.3.2. Intel-Defined Vendor Specific Header (Offset 04h)
A.3.3. Intel Marker (Offset 08h)
A.3.4. JTAG Silicon ID (Offset 0x0C - 0x18)
A.3.5. User Configurable Device and Board ID (Offset 0x1C - 0x1D)
A.3.6. General Purpose Control and Status Register (Offset 0x30)
A.3.7. Uncorrectable Internal Error Status Register (Offset 0x34)
A.3.8. Uncorrectable Internal Error Mask Register (Offset 0x38)
A.3.9. Correctable Internal Error Status Register (Offset 0x3C)
A.3.10. Correctable Internal Error Mask Register (Offset 0x40)
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7.7.1. PIPE Mode Clock Signal
The PIPE clocks signals as shown below are generated for PCIe IP and each of them correspond to the P0/P1/P2/P3 Core.
- i_pclk_x4_l12 - P3 Core
- i_pclk_x4_l4 - P2 Core
- i_pclk_x8_l8 - P1 Core
- i_pclk_x16_l0 - P0 Core
Depending on the configuration, only the i_pclk_x* on active cores need to be driven at proper clock frequency according PCIe link speed as shown below. For the i_pclk_x* on inactive cores, keep the clock frequency at 125 MHz (the default value). Please note that these clocks are sourced from VIP. For example, Root Port BFM users need to ensure the clock frequency driving the change properly along with PCIe link speed.
- Gen1 : 125 MHz
- Gen2 : 250 MHz
- Gen3 : 500 MHz
- Gen4 : 1000 MHz
The following is an example where the PCIe configuration is Gen4 2x8 with i_pclk_x16_l0 and i_pclk_x8_l8 are driven by clocks sourced from Root Port BFM module. In this example, the P0 and P1 cores are active and the source clocks frequency must be driven from 125 MHz (Gen1) and stepping up to 1000 MHz (Gen4). The P2 and P3 cores are inactive, thus i_pclk_x4_l4 and i_pclk_x4_l12 are kept at 125 MHz.
Figure 75. PIPE Clocks Connectivity and Settings in Gen4 2x8 Mode