When a bit in this bus is 1, it indicates that after the corresponding lane was word boundary synchronized, a CRC32 error was detected. This output is asserted for one clock period each time a CRC32 error is detected.
Note: CRC32 errors do not affect word boundary synchronized. They are
only reported as status indicators. Keep a count of how many CRC32 errors were detected
for each lane to examine the health of each individual lane over a period of
time.
Note: The checking of the Diagnostic Word only checks the CRC32 and
does not check whether or not the unused bits of the Diagnostic Word, Bits[57:34], are
0s as described in the specification.