SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
MSMC stores the memory mapped SRAM snoop filter state in a separate memory from the tags and protects this information with simple parity. Each snoop filter entry requires five data bits and eight coherent blocks are stored together as a parity data word, resulting in one parity bit to every 40 data bits. The parity bit resides at the most significant bit position in the total parity + data word.