AnsweredAssumed Answered

ADV7619 - Equalizer settings

Question asked by A.Dubois on Sep 23, 2013
Latest reply on Sep 24, 2013 by A.Dubois

I'm trying to configure the ADV7619's equalizer as advised by the "Register settings recommendations" document.

 

We can find in this document the following settings :

 

(A) For TMDS frequencies 27MHz and below following settings are required

  • 68 85 11 ; ADI recommended writes (27MHz and below)
  • 68 86 9B ; ADI recommended writes
  • 68 9B 03 ; ADI recommended writes

 

(B) When change the TMDS frequency from 27MHz to above 27MHz, under register setting are needed.

  • 68 85 10 ; ADI recommended writes (above 27MHz)
  • 68 9C 80 ; ADI recommended writes
  • 68 9C C0 ; ADI recommended writes
  • 68 9C 00 ; ADI recommended writes

 

(C) For TMDS frequencies above 27MHz following settings are required

  • 68 85 10 ; ADI recommended writes (above 27MHz)
  • 68 86 9B ; ADI recommended writes
  • 68 9B 03 ; ADI recommended writes

 

I don't understand exactly under which conditions I should do B and C, and if the order matters.

 

For now, when I switch to a > 27 MHz frequency, I do B then C. When switching back to 27 MHz, I just do A.

The reception still works, but we have no way to tell that the equalizer's configuration actually is optimal.

 

Thanks for your help

 

Arnaud

Outcomes