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LS1020A starts not constantly

Question asked by Ilya Minaev on May 7, 2018
Latest reply on May 8, 2018 by alexander.yakovlev

Hello. I created a motherboard with a 1020A processor. and when the board is turned on, the processor behaves differently each time. Often there are situations in which the processor does not respond to PORESET_B. This happens when the line RESET_REQ_B  produces 0. When   RESET_REQ_B  1 starts, the processor starts abnormally after PORESET_B, it is loaded from the SD card. But the processor starts randomly. What could be the problem of such impermanence?