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ADV7612 Hardwere

Question asked by SOO3931123 on Jun 4, 2014
Latest reply on Jun 5, 2014 by GuenterL

Hi ADI engineers

I am using your ADV7612 and ADV7511 on my board. The ADV7612's crystal is 28.63636MHz. After I config the IC ,I want to test the crystal whether it works right. When I use the probe to detect the pin of the crystal XTAL_P,the waveform from the crystal disappear and so does the LLC.

Does the Schematics and PCB have  something wrong ? The C201 and C202 is the C_load.

And even when the crystal oscillator works "well"(I am not sure because I can not detect it), I can usually get a blue 480p screen. The ADV7612 never decode the TMDS right(I have config the chip by your ADV7612-VER.3.0c.txt). Is it possible that the crystal oscillator causes the problem ?