DS90UB964-Q1: SI test question

Yadong Duan

Part Number: DS90UB964-Q1

Hi Team,

From customer feedback, when the used the 5M and 10M cable to test the basic check. they have voltage glitch. Would you please help share your comment?

Many thanks

over 2 years ago

0 Hamzeh Jaradat over 2 years ago

TI__Guru** 108090 points

Hello Yadong,

can you explain what do you mean by the basic check?

Can you explain, which voltage is glitching? and do you have any measurement showing this voltage glitch?

0 dongfu.gu over 2 years ago in reply to Hamzeh Jaradat

Prodigy 10 points

Hi Hamzeh,

Voltage glitch refers to the DESerializer RIN3+/RIN3- has a voltage jitter output ,without connecting to an external camera. The measured waveform has been added, thanksFPD Link III.zip

0 Casey McCrea over 2 years ago in reply to dongfu.gu

TI__Guru** 103215 points

Hello Yadong,

Today 2/20 is a US public holiday so the team will resume activity on 2/21. Thank you for your patience during this time

Best Regards,

Casey

0 Hamzeh Jaradat over 2 years ago in reply to dongfu.gu

TI__Guru** 108090 points

Hello Dongfu,

did you disable that port while it is not used? If you are not using any Rx port, you need to disable it in reg 0x0C. If you do not do that, the device's driver will be active and sending the back channel signal. Also, the trace will act as an antenna and collect noise and feed it to the device. hence, please disable any unused RX port.

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DS90UB964-Q1: SI test question