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1. Datasheet
2. Getting Started with the Avalon‑MM Cyclone V Hard IP for PCI Express
3. Parameter Settings
4. Interfaces and Signal Descriptions
5. Registers
6. Interrupts for Endpoints
7. Error Handling
A. PCI Express Protocol Stack
8. Design Implementation
9. Additional Features
10. Transceiver PHY IP Reconfiguration
11. Debugging
B. Frequently Asked Questions for PCI Express
C. Lane Initialization and Reversal
D. Document Revision History
5.1. Correspondence between Configuration Space Registers and the PCIe Specification
5.2. Type 0 Configuration Space Registers
5.3. Type 1 Configuration Space Registers
5.4. PCI Express Capability Structures
5.5. Intel-Defined VSEC Registers
5.6. CvP Registers
5.7. 64- or 128-Bit Avalon-MM Bridge Register Descriptions
5.8. Programming Model for Avalon-MM Root Port
5.9. Uncorrectable Internal Error Mask Register
5.10. Uncorrectable Internal Error Status Register
5.11. Correctable Internal Error Mask Register
5.12. Correctable Internal Error Status Register
5.7.1.1. Avalon-MM to PCI Express Interrupt Status Registers
5.7.1.2. Avalon-MM to PCI Express Interrupt Enable Registers
5.7.1.3. PCI Express Mailbox Registers
5.7.1.4. Avalon-MM-to-PCI Express Address Translation Table
5.7.1.5. PCI Express to Avalon-MM Interrupt Status and Enable Registers for Endpoints
5.7.1.6. Avalon-MM Mailbox Registers
5.7.1.7. Control Register Access (CRA) Avalon-MM Slave Port
A.4.1. Avalon‑MM Bridge TLPs
A.4.2. Avalon-MM-to-PCI Express Write Requests
A.4.3. Avalon-MM-to-PCI Express Upstream Read Requests
A.4.4. PCI Express-to-Avalon-MM Read Completions
A.4.5. PCI Express-to-Avalon-MM Downstream Write Requests
A.4.6. PCI Express-to-Avalon-MM Downstream Read Requests
A.4.7. Avalon-MM-to-PCI Express Read Completions
A.4.8. PCI Express-to-Avalon-MM Address Translation for 32-Bit Bridge
A.4.9. Minimizing BAR Sizes and the PCIe Address Space
A.4.10. Avalon® -MM-to-PCI Express Address Translation Algorithm for 32-Bit Addressing
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1.7. IP Core Verification
To ensure compliance with the PCI Express specification, Intel performs extensive verification. The simulation environment uses multiple testbenches that consist of industry‑standard bus functional models (BFMs) driving the PCI Express link interface. Intel performs the following tests in the simulation environment:
- Directed and pseudorandom stimuli test the Application Layer interface, Configuration Space, and all types and sizes of TLPs
- Error injection tests inject errors in the link, TLPs, and Data Link Layer Packets (DLLPs), and check for the proper responses
- PCI-SIG® Compliance Checklist tests that specifically test the items in the checklist
- Random tests that test a wide range of traffic patterns
Intel provides the following two example designs that you can leverage to test your PCBs and complete compliance base board testing (CBB testing) at PCI-SIG.
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