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AD7779 MEMMAP_CRC_ERR Error abnormal occurrence

Question asked by dmitri-abramovic on Aug 12, 2018

When I debugging the EVAL-AD7779FMCZ evaluation board with STM32F7, it is found that after the SRC_N/SRC_IF register is configured  (configuration data is SRC_N = 0x00CC, SRC_IF = 0xCCCC, OR = 10KHz), the chip output is abnormal, and reading GEN_ERR_REG1 finds the MEMMAP_CRC_ERR bit set. If I disable this error in GEN_ERR_EN_REG1, it does not seem to affect the acquisition.

 

Why does the MEMMAP_CRC_ERR bit be set? How should I solve it? Does it have any effect on the acquisition?

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