DS90UB941AS-Q1: Question for power on sequence requirement

Harry Shin1

Expert 6990 points

Part Number: DS90UB941AS-Q1

Hello team,

my customer asked that reason why 941AS configuration `need to be configured after PCLK(DSI CLK) activated.

Could you pls help answer this to my customer??

Thanks for your support as all them time~!!

over 4 years ago

+1 Casey McCrea over 4 years ago

TI__Guru** 103215 points

Hello Harry,

That isn't really a strict requirement, however the DSI receiver should not be enabled (in 0x01) until the DSI source has started. That will ensure that the PLL locking will be deterministic and that the link will come up at the correct speed each time. Other settings can be applied before DSI is available while holding the DSI input in reset with 0x01

Best Regards,

Casey

0 Harry Shin1 over 4 years ago in reply to Casey McCrea

TI__Expert 6990 points

Thanks for support. now I am clear on this.

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DS90UB941AS-Q1: Question for power on sequence requirement