DS90UB926Q-Q1: BIST mode

Tomoaki Yoshida91

Genius 5255 points

Part Number: DS90UB926Q-Q1

Hi team,

I have some questions for BIST mode.

In BIST mode, are RGB and Sync signals output?

If the answer of #1 is yes, what kind of video is output?

Best regards,

Tomoaki Yoshida

0 Hamzeh Jaradat over 6 years ago

Hello Tomoaki-san,

No, BIST mode is only testing the FPD-Link between SER and DES. There is nothing on the DES outputs.

0 Tomoaki Yoshida91 over 6 years ago in reply to Hamzeh Jaradat

Genius 5255 points

Hi Hamzeh-san,

Thank you for your reply.

Is not PCLK also output?

Best regards,

Tomoaki Yoshida

0 Hamzeh Jaradat over 6 years ago in reply to Tomoaki Yoshida91

I never measure that, but I believe also no CLK will be seen at the outputs.

Why are you asking? do you see output?

0 Tomoaki Yoshida91 over 6 years ago in reply to Hamzeh Jaradat

Genius 5255 points

Hi Hamzeh-san,

Thank you for your support.

We can not confirm the waveform because we do not have a real thing yet.

We are investigating cases where the video is interrupted for the purpose of specs.

For example, 926 may have been unintentionally set to BIST mode.

Best regards,

Tomoaki Yoshida

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