GTS AXI Multichannel DMA IP for PCI Express User Guide

ID 847470
Date 5/06/2025
Public

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Document Table of Contents

A.1.5.2. Configuration Access Mechanism

Table 68.  Configuration Access Mechanism
Access Access Mechanism
EP Configuration Space Write

Two Writes:

  • Write BDF information to 0x2004 (with address bit[13] set to 1).
  • Write to EP Register address (with address bit[13] set to 0) with the actual data.
EP Configuration Space Read
  • Write BDF information to 0x2004 (with address bit[13] set to 1).
  • Read from EP Register address (with address bit[13] set to 0).
  • Configuration TLP Type1/Type0 is based on the address bit[12].
  • CplD data is available on the read data channel.