AR# 71369

CPRI 8.9 - Link resyncs every 10ms when the IQ RX is looped back to the IQ TX

Description

In version 8.9 of the CPRI IP Core, When the RX strobe is looped back to the TX strobe at the slave, the link resyncs every 10ms in simulation:


 

Solution

This is a known issue in CPRI 8.9 in Vivado 2018.1. It will be fixed in Vivado 2018.3.

  • Vivado 2018.1 - You can download the CPRI IP patch from (Xilinx Answer 71517) to work around the issue.
  • Vivado 2018.2 - You can download the CPRI IP patch from (Xilinx Answer 75511) to work around the issue.
  • Vivado 2018.3 and later - The issue is resolved in Vivado 2018.3 and later versions


For a detailed list of CPRI Release Notes and Known Issues, see (Xilinx Answer 54473).

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
54473 LogiCORE IP CPRI Core - Release Notes and Known Issues for Vivado 2013.1 and newer tool versions N/A N/A

Associated Answer Records

Answer Number Answer Title Version Found Version Resolved
71517 CPRI v8.9 - Patch Update for Hard FEC Wrapper latency Issue in Vivado 2018.1 N/A N/A
AR# 71369
Date 09/08/2020
Status Active
Type General Article
IP