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HRESET_B Problem in Power On Reset Sequence

Question asked by Ather Shehzad on Mar 16, 2020
Latest reply on Mar 20, 2020 by Ather Shehzad


I am using a custom made T1042 based card. I am having problem in one card because of power on sequence of the card. A CPLD is used to follow the power on sequence. As a start when I pull down the PORESET_B signal, then according to power-on reset sequence that is mentioned in Figure 4-1 of reference manual, HRESET_B should also get pull down but this is not happening. HRESET_B is continuously on HIGH state resulting not following POWER on sequence. Hence ASLEEP LED is always on. What might be the issue and the solution to this problem?


I have other boards also with same design but they are not causing this issue with same CPLD Code.