DS90UB927Q-Q1: When PCLK=25M，ok;when PCLK=60M, no display no lock

Amelie Zheng

Genius 10865 points

Part Number: DS90UB927Q-Q1
Other Parts Discussed in Thread: ALP

Hi Team,

My customer now debug 927+948.

When PCLK=25M，ok and could display;

When PCLK=60M, no display no lock.

I have already checked when in 60M PCLK.

LFMODE=0 in 927

Rin =100NF in 948

MODE_SEL0 0.759V in 948

MODE_SEL1 0.753V in 948

Could you please help for it.

927_V1.1.pdf

7534.948.pdf

over 4 years ago

0 Hamzeh Jaradat over 4 years ago

TI__Guru** 108090 points

Hello Amelie,

what is the length of the used cable?

Can you please have them run MAP Tool in both cases and provide the result?

0 Amelie Zheng over 4 years ago in reply to Hamzeh Jaradat

TI__Genius 10865 points

Hi Hamzeh,

I think only camera serdes has MAP tools. 94x and 92x are related to display serdes and have no map tools.

0 Hamzeh Jaradat over 4 years ago in reply to Amelie Zheng

TI__Guru** 108090 points

Hello Amelie,

All FPD-Link III DES has the MAP tool. If they do not see it, it means they need to update ALP to the latest revision and unstall the latest profile updater!

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DS90UB927Q-Q1: When PCLK=25M，ok;when PCLK=60M, no display no lock