DS90UB941AS-Q1: DSI reference mode fail

Ryan Wang

Part Number: DS90UB941AS-Q1

Experts,

Customer use DS90UB941 to connect with 948. It works fine with "External Reference Clock Mode" but no output in "DSI reference mode".

What registers and hardware I need to check?

0 Casey McCrea over 5 years ago

Hello Ryan,

Can you confirm the following?

- DSI frequency

- Number of lanes

- Is the DSI source configured for continuous clock mode?

- What is the external oscillator frequency for the working case?

- Configuration steps being used to set the clock mode (set by registers or by pin strap?)

Best Regards,

Casey

0 Ryan Wang over 5 years ago in reply to Casey McCrea

Casey,

thanks. Answer is embedded in attached PPTDS90uh941-948block_v1.pptx

0 Casey McCrea over 5 years ago in reply to Ryan Wang

Hello Ryan,

Can you please send a scope shot of the DSI clock during operation?

Also is it possible to provide a register dump of the 941AS?

Best Regards,

Casey

0 Ryan Wang over 5 years ago in reply to Casey McCrea

Casey,

Thanks a lot for your feedback.

Customers need some approval to send information out which might take several days. I will post once I get it.

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