AR# 70877

DMA Subsystem for PCI Express (Vivado 2017.4) - c2h_dsc_byp_ready may deassert permanently in Descriptor Bypass mode


Version Found: v4.1

Version Resolved and other Known Issues: (Xilinx Answer 65443)

When operating the DMA Subsystem for PCI Express IP in DMA mode with the "descriptor bypass" option enabled, c2h_dsc_byp_ready might de-assert permanently.

This article is part of the PCI Express Solution Centre

(Xilinx Answer 34536)Xilinx Solution Center for PCI Express


This is a known issue to be fixed in a future release of the core. 

To fix the issue in Vivado 2017.4, please install the tactical patch attached. 

For instructions on installing the patch, please check the instructions in the 'patch_readme' directory in the attached patch file.

Note: the "Version Found" column lists the version the problem was first discovered.

The problem also exists in earlier versions, but no specific testing has been performed to verify earlier versions.

Revision History:

05/03/2018 - Initial Release


Associated Attachments

Name File Size File Type 4 MB ZIP
AR# 70877
Date 05/04/2018
Status Active
Type Known Issues