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AR# 59135

7 Series FPGA GTZ Transceiver - CTLE Tuning Reliability and TX Flatline

Description

The CTLE tuning on the RX of a GTZ lane can cause its own TX to flatline and be stuck. Also, repeated CTLE tuning can produce incorrect CTLE tuning coefficients resulting in low BER (Bit Error Rate) on the GTZ.

Solution

These issues are fixed in the Vivado 2013.4 tool, so it is recommended to upgrade to that version for GTZ designs.
AR# 59135
Date Created 01/16/2014
Last Updated 01/20/2014
Status Active
Type General Article
Devices
  • Virtex-7 HT