31.3.10.2 CRC Accumulator Topology

Other CRC modules have functions that support two selectable accumulator topologies. The topologies differ based on if PLEN+1 trailing zeros in the byte stream exist or not. Since this CRC is specific to Flash-based tests and not streaming data, FCR’s CRC topology does not require “extra” trailing zeros in the message. This topology is shown in the following figure.

Figure 31-8. CRC LFSR Topology