ADV7611 HDMI in SD mode

Discussion created by HankZ on May 20, 2016
Latest reply on May 23, 2016 by mattp

ADV7611 works nicely in HD modes, however as soon as we send in a SD HDMI signal no TMDS clock is detected (TMDS_CLK_A_RAW). I measured the clock inputs and there is a 27Mhz clock there. I verified the Ref crystal frequency & XTAL_FREQ_SEL[1:0] is set to 1. Are there any other settings affecting this detection ? What could cause this problem ?