AnsweredAssumed Answered

Time for calculating CRC of CGMS of ADV739x.

Question asked by Tamu on Feb 28, 2014
Latest reply on Mar 12, 2014 by PaulS

Hello,

 

I have a question about time for calculating CRC of CGMS of ADV739x.

 

There is a description about "CGMS CRC FUNCTIONALITY" on page.74 as follows:

"If SD CGMS CRC (Subaddress 0x99, Bit 4) or ED/HD CGMS CRC (Subaddress 0x32, Bit 7) is enabled,
the upper six CGMS data bits (C19 to C14) that comprise the 6-bit CRC check sequence are
automatically calculated on the ADV739x.
This calculation is based on the lower 14 bits (C13 to C0) of the data in the CGMS data registers,
and the result is output with the remaining 14 bits to form the complete 20 bits of the CGMS data."

 

Question:
Could you tell me how much time takes for the 6-bit CRC check sequence to be automatically calculated?

 

Thank you.

Best regards.
Tamu

Outcomes