DS90UB941AS-Q1: DSI reference mode fail

Ryan Wang

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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