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the problem about register 0x9E of AD9889B

Question asked by spring on Oct 19, 2013
Latest reply on Oct 21, 2013 by mattp

Hi,

 

Now,  the monitor can dispaly when the resolution of input is 1024*768 or 720P in the ways of AD9889B HDMI mode.

 

But it cannot display when the resolution of input is 1280*1024, but I can see someting output in TMDS PINS as 720P with oscilloscope.

 

So I read some register and find that there is difference about register 0x9E.

 

when resolution is 1024*768 or 720P, the value of Reg0x9E is 0x12.

 

 

when resolution is 1280x1024, the value of Reg0x9E is 0x14, sometimes it will becoming 0x16.

 

what does this mean ?

 

Need your help, thanks!

 

chen

 

 

.

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