描述

During the DQSFOUND stage of calibration, the different DQS groups are aligned to the same PHY_Clk and the optimal read data offset position is found with respect to the read command. 

MIG 7 Series v1.5 has an issue where the DQSFOUND calibration stage can go into an infinite loop if the first iteration pass fails. 

If DQSFOUND calibration fails, calibration should stop and the pi_dqsfound_err signal should be asserted instead of going into an infinite loop.

解决方案