AnsweredAssumed Answered

distinguish between xga and wxga (AD9388A)

Question asked by DavidF on Nov 30, 2010
Latest reply on Dec 2, 2010 by DavidF

Hello,

 

is there any way to distinguish between XGA@50 and WXGA@50 formats with AD9388A from RGBHV source?

 

The STDI and SSPD results are the same in both cases:

BL=5677. LCF=805, FCL=2237, LCVS=5, vspol=neg, hspol=neg in both cases.

 

Unfortunately the XGA@50 (1024x768@50) has 1344 pixel between two hsync, while the WXGA@50 (1280x768@50) has 1688, so even the PLL factors are differ. If I configure the auto graphics mode for XGA, but the incoming signal is WXGA - or reverse - the image has wrong clock, size, and horizontal position.

 

Is there any way to distinguish these formats? I suppose, there are other similar problematic resolution-pairs.

Outcomes