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ADV7441 256 gradation grayscale jitter issue

Question asked by 涂玉山 on Nov 19, 2017
Latest reply on Nov 19, 2017 by mattp

1. When use ADV7441 input 1080p(VESA Standard video) video signal, there's appear that  256 gradation grayscale jitter issue.

2.When we use low or other resolution video , there's still has the same problem.

3.Chang the Drive Strength:User Map 0x6A[5]=0,  User Map 0x6A[4:0] or User Map 1 0x75[6]=1, User Map 1 0x75[5]=1;User Map 1 0x75[4:0], it doesn't work .

4.We've checked the TMDS& 1.8V Voltage, they're all stable.

5.Is there any solution for this issue?

 

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