Cyclone® V Avalon® Memory Mapped (Avalon-MM) Interface for PCIe* Solutions User Guide

ID 683494
Date 3/19/2020
Public
Document Table of Contents

1.5. Configurations

The Avalon-MM Cyclone V Hard IP for PCI Express includes a full hard IP implementation of the PCI Express stack comprising the following layers:

  • Physical (PHY), including:
    • Physical Media Attachment (PMA)
    • Physical Coding Sublayer (PCS)
  • Media Access Control (MAC)
  • Data Link Layer (DL)
  • Transaction Layer (TL)

When configured as an Endpoint, the Cyclone V Hard IP for PCI Express using the Avalon-MM supports memory read and write requests and completions with or without data.

Figure 2. PCI Express Application with a Single Root Port and EndpointThe following figure shows a PCI Express link between two Cyclone V FPGAs. One is configured as a Root Port and the other as an Endpoint.
Figure 3. PCI Express Application Using Configuration via Protocol The Cyclone V design below includes the following components:
  • A Root Port that connects directly to a second FPGA that includes an Endpoint.
  • Two Endpoints that connect to a PCIe switch.
  • A host CPU that implements CvP using the PCI Express link connects through the switch. For more information about configuration over a PCI Express link below.

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