AnsweredAssumed Answered

ADV7630  TX HDCP issue

Question asked by daoyin Employee on Jul 23, 2013
Latest reply on Oct 16, 2013 by daoyin

Issue:

When use some Laptop as HDMI source such as DELL,/ASUS brand, We meet TX HDCP error issue

Signal Chain:

Laptop (HDMI)--->ADV7630 RX-----mux Mode----->ADV7630 TX (HDCP )

 

Also we check it with Blue ray DVD, set up box, PC,signal generator, TX HDCP always correct

 

I capture the failed TX DDC log file as attachment. We can see the R0' value  is not changed in one cycle

 

What my solution (but not effected):

1. Changed the TMDS Vp-p by change the R-EXT resistor value

2. Active the TX HDCP manual (not by SW)

 

The Laptop  which I tested don't support HDCP feature ,so it must be not because of HDCP repeater issue

 

Would you please kindly give me some advice?

Thanks

Outcomes