5.3 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 5-5. 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 Output Drive Strength
  • FPGA DQS ODT
The following figure shows the configuration of output drive strength in the DDR Memory Initialization tab.
Figure 5-6. Configuring Output Drive Strength—DDR Memory Initialization Tab
The following figure shows the configuration of DQS ODT in the DDR Controller tab.
Figure 5-7. Configuring DQS ODT—DDR Controller Tab