1. GTZ power droop/spike
Issue: When multiple GTZ lanes are going through reset at the same time, the voltage profile droops or spikes depending on power up or power down. Also, if many Rx are going through reset, some Tx also experience errors as a result.
Work-around: The recommended GTZ reset sequence should be implemented to avoid the occurrence of this issue. For the reset sequence, please refer to (Xilinx Answer 59038).
2. Support for XC7VH870T and XC7VH580T FLG package devices
Issue: When any FLG package of XC7VH580T or XC7VH870T devices is selected in Vivado Design Suite 2013.4, the GTZ Wizard cannot be invoked and that results in an error.
Work-around: Please refer to (Xilinx Answer 59186).
3. TXPHASECALENn value incorrect
Issue: Port TXPHASECALENn value is set incorrectly by the Wizard.
Work-around: Please refer to (Xilinx Answer 59269).