RXPACC update in new transmissions

Hi

I am using the DW3001CDK and I want to extract the RXPACC value from Sub-register 0x00:4C – RX Frame Information. I expected to get an updated RXPACC value with each new transmission, but it always remains constant. Is this normal? I’ve seen in some applications that the RXPACC value changes with every communication.

Any help would be greatly appreciated.