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AD9889B - No output signals

Question asked by edrafahl on Sep 27, 2011
Latest reply on Sep 28, 2011 by edrafahl

Hi,

 

I'm trying to use the AD9889B as a DVI transmitter to transmit 1080p50 video data. Unfortuantely, the TMDS output are inactive (Register C6[0] = 0). I believe that I may not have one of the registers set properly, but I cannot figure out which one. Any help that you could provide would be useful. Here's a register dump of all of the registers up to 0xCF:

 

0x0:   00 00 00 00 00 00 00 00 00 00 01 0E 3C 18 01 13

0x10: 25 37 00 00 00 00 00 00 06 62 04 A8 00 00 1C 84

0x20: 1C BF 04 A8 1E 70 02 1E 00 00 04 A8 08 12 1B AC

0x30: 00 00 00 00 00 00 00 00 00 00 00 80 00 00 00 00

0x40: 00 10 40 7E 78 00 00 00 00 00 00 00 00 00 00 00

0x50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0x90: 00 00 00 00 C0 00 E0 80 07 02 00 18 38 61 12 70

0xA0: 00 00 87 87 08 04 00 00 00 00 00 40 00 00 40 04

0xB0: D6 77 82 CF 5C 9B 2E 17 10 00 00 FF 00 00 00 00

0xC0: 00 00 00 00 00 80 00 00 41 00 00 01 02 00 00 70

 

Thanks,

Eric

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