Nopphon, The CRC implemented in the ADS131A04 is a CRC standard. If you look up CRC in Wikipedia, this particular implementation is found described as CRC-16-CCITT. If you google CRC-CCITT, you can even find code to generate the CRC data. When you read back data, you calculate the CRC byte and compare that with the CRC byte generated by the device to ensure that your communications have not been corrupted. Joseph Wu
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