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AD9889B DVI issue

Question asked by Toldavf on Jul 3, 2012
Latest reply on Jul 3, 2012 by Toldavf

Hello,

 

It's my first post on this forum. For several months, I work on an ARMadeus APF27 DevBoard which use an AD9889B HDMI/DVI Controler.

From this board, i execute a GUI that I display on a computer screen with a HDMI/DVI converter.

The ad9889b configuration is set by a module developed and provided by ARMadeus. I didn't set this configuration manually

This worked perfectly but for several days, the display no longer works. Indeed, the "display" enter immediatly on power saving mode.

Im sure that this issue don't come from the software of my progam. I'v tested the HDMI connector and the HDMI/DVI converter and they seems to work correctly.

So I think this issue come from the AD9889B controler on my board.

 

On my dev board, i have a program to dump the registers state of the ad9889B controlers. I have tried to check the registers values but i'm not familiar with this controler so i have big difficulties to see if there is wrong values or not.

 

Here are the values i get with the dump :

 

Dev:Ad:Va   Dev:Ad:Va    Dev:Ad:Va    Dev:Ad:Va

39:00:00      39:01:00     39:02:00     39:03:00   

39:04:00      39:05:00     39:06:00     39:07:00   

39:08:00      39:09:00     39:0A:00     39:0B:0E   

39:0C:00     39:0D:18     39:0E:01     39:0F:13   

39:10:25      39:11:37     39:12:00     39:13:00   

39:14:00      39:15:00     39:16:00     39:17:08   

39:18:07      39:19:FF     39:1A:00     39:1B:00   

39:1C:00     39:1D:00     39:1E:00     39:1F:00   

39:20:00      39:21:00     39:22:07     39:23:FF   

39:24:00     39:25:00     39:26:00     39:27:00   

39:28:00     39:29:00     39:2A:00     39:2B:00   

39:2C:07     39:2D:FF     39:2E:00     39:2F:00   

39:30:00     39:31:00     39:32:00     39:33:00   

39:34:00     39:35:00     39:36:00     39:37:00   

39:38:00     39:39:00     39:3A:00     39:3B:01   

39:3C:00     39:3D:00     39:3E:00     39:3F:00   

39:40:00     39:41:10     39:42:C0     39:43:7E   

39:44:78     39:45:80     39:46:04     39:47:80   

39:48:00     39:49:00     39:4A:00     39:4B:00   

39:4C:00     39:4D:00     39:4E:00     39:4F:00   

39:50:00     39:51:00     39:52:00     39:53:00   

39:54:00     39:55:00     39:56:00     39:57:00   

39:58:00     39:59:00     39:5A:00     39:5B:00   

39:5C:00     39:5D:00     39:5E:00     39:5F:00   

39:60:00     39:61:00     39:62:00     39:63:00   

39:64:00     39:65:00     39:66:00     39:67:00   

39:68:00     39:69:00     39:6A:00     39:6B:00   

39:6C:00     39:6D:00     39:6E:00     39:6F:00   

39:70:00     39:71:00     39:72:00     39:73:00   

39:74:00     39:75:00     39:76:00     39:77:00   

39:78:00     39:79:00     39:7A:00     39:7B:00   

39:7C:00     39:7D:00     39:7E:00     39:7F:00   

39:80:00     39:81:00     39:82:00     39:83:00   

39:84:00     39:85:00     39:86:00     39:87:00   

39:88:00     39:89:00     39:8A:00     39:8B:00   

39:8C:00     39:8D:00     39:8E:00     39:8F:00   

39:90:00     39:91:00     39:92:00     39:93:00   

39:94:84     39:95:C0     39:96:40     39:97:00   

39:98:07     39:99:02     39:9A:00     39:9B:18   

39:9C:38     39:9D:61     39:9E:03     39:9F:70   

39:A0:0A     39:A1:00     39:A2:87     39:A3:87   

39:A4:08     39:A5:04     39:A6:00     39:A7:00   

39:A8:00     39:A9:00     39:AA:00     39:AB:40   

39:AC:00     39:AD:00     39:AE:40     39:AF:04   

39:B0:30     39:B1:F0     39:B2:C7     39:B3:33   

39:B4:2D     39:B5:9E     39:B6:EA     39:B7:16   

39:B8:90     39:B9:00     39:BA:60     39:BB:FF   

39:BC:00     39:BD:00     39:BE:00     39:BF:00   

39:C0:00     39:C1:00     39:C2:00     39:C3:00   

39:C4:00     39:C5:10     39:C6:00     39:C7:00   

39:C8:02     39:C9:03     39:CA:00     39:CB:01   

39:CC:02     39:CD:00     39:CE:00     39:CF:70   

38:00:00     38:01:00     38:02:00     38:03:00   

38:04:00     38:05:00     38:06:00     38:07:00   

38:08:00     38:09:00     38:0A:00     38:0B:00   

38:0C:00     38:0D:00     38:0E:00     38:0F:00   

38:10:00     38:11:00     38:12:00     38:13:00   

38:14:00     38:15:00     38:16:00     38:17:00   

38:18:00     38:19:00     38:1A:00     38:1B:00   

38:1C:00     38:1D:00     38:1E:00   

 

So can anyone check these register  and see if some have wrong values ?

I know it can be a long and boring work but i really don't know how to fix this issue.

I thank you in advance for your help.

 

Regards,

Maxime

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