AR# 69683

LogiCORE DisplayPort TX Subsystem v2.0 (Rev. 2) - Why is there sometimes unexpected data skew between lanes when enabling the PRBS-7 option?

描述

When using the DisplayPort TX Subsystem 2.0 (Rev. 2) to send the PRBS-7 sequence, sometimes (not all of the time) the transmitted PRBS-7 sequence is not properly aligned for the PRBS-7 pattern.

The User test procedure is as follows:

  1. Set LINK_QUAL_PATTERN_SET = 000. (DisplayPort TX transmit Colorbar pattern)
  2. Set SCRAMBLING_DISABLE = 1
  3. Turn off the (8B/10B) encoder
  4. Set LINK_QUAL_PATTERN_SET = 011. (to select the PRBS7 pattern)
  5. Toggling LINK_QUAL_PATTERN_SET 0x000 --> 0x011 will trigger this issue.

解决方案

This issue occurs in the LogiCORE DisplayPort TX Subsystem v2.0 (Rev. 2) through v2.0 (Rev. 5).

This issue will be fixed in Vivado 2017.3.

链接问答记录

主要问答记录

相关答复记录

Answer Number 问答标题 问题版本 已解决问题的版本
67091 2017.2 LogiCORE DisplayPort TX Subsystem 2.0 (Rev. 3) - Patch Updates for the DisplayPort TX Subsystem v2.0 (Rev. 3) N/A N/A
AR# 69683
日期 08/31/2017
状态 Active
Type 综合文章
Tools
IP