DS90UB954-Q1: Image flicker and jitter

WU YISYUAN

Expert 2165 points

Part Number: DS90UB954-Q1
Other Parts Discussed in Thread: ALP

Hi,

I have some problems with the use of 954, configuration is as follows:

Why does the lower half of the screen jitter or flicker when switching?

Or when 913 953 is switched, flicker or jitter occurs in the lower half of the picture.

over 6 years ago

0 Steven(Shenzhen) Shi over 6 years ago

TI__Mastermind 30515 points

hello,
you can identify it step by step on this issue. is it from the link 9x3 to 954, or the SoC to display? basically I think it is the link SoC to panel issue as just partial image is polluted. btw, what is the SoC?

regards,
Steven

0 Sam Sangani over 6 years ago in reply to Steven(Shenzhen) Shi

Prodigy 160 points

Hello,
I am having same issue when longer cable is connected between DS90UB953 and DS90UB954. Is it due to bad eye or MIPI timing? Do we need to tune MIPI timing for different cable length? I believe we just need to adjust strobe position for different cable lengths, right?

regards,
Sam

0 Steven(Shenzhen) Shi over 6 years ago in reply to Sam Sangani

TI__Mastermind 30515 points

Sam,
the strip is distributed randomly or same as the above? if it is random, it could be noise here. you can use TI's ALP tool to sweep the parameter, and compare it with your system setting.

best regards,
Steven

Interface

Interface forum

DS90UB954-Q1: Image flicker and jitter