3.4 Read Gate Training Fail

Possible Reason
Signal integrity issues on CA or DQS lines. When the Read Gate training fails, a dialog box appears as shown in the following figure.
Figure 3-11. Read Gate Training Fail
Workaround
Configure any one of the following parameters to a different value using the MSS Configurator when the Read Gate training fails:
  • Memory CA ODT
  • Memory Pull-Down Drive Strength
  • FPGA DQS ODT
The following figure shows the configuration of pull-down drive strength or CA ODT in the DDR Memory Initialization tab.
Figure 3-12. Configuring Pull-Down Drive Strength or CA ODT—DDR Memory Initialization Tab
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The following figure shows the configuration of DQS ODT in the DDR Controller tab.
Figure 3-13. Configuring DQS ODT—DDR Controller Tab
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