SN65DSI84: Some question aboout SN65DSI84

Gabriel Wang1

Part Number: SN65DSI84

Dear Expert

Now we have two problems with SN65DSI84, as follows:

1. After we configure the SN65DSI84 register, the LCD screen shows, but the check value of E5 register is not 00, but 81. Could you help explain what 81 stands for?

2. SN65DSI84 will occasionally have no LVDS signal output (probability about 1%), resulting in no display on the LCD screen. DSI signal input has been confirmed, can you help analyze what may be the problem?

over 2 years ago

0 Malik Barton57 over 2 years ago

TI__Guru 64326 points

Hi,
Your issue is being assigned to the appropriate engineer. Due to the US Holiday there may be a delay in response to your post. We apologize for any inconvenience.

0 Gabriel Wang1 over 2 years ago in reply to Malik Barton57

Genius 4385 points

Dear Malik

Could u give some adivice about these question ,many thanks!

0 David (ASIC) Liu over 2 years ago in reply to Gabriel Wang1

TI__Guru**** 157496 points

Hi,

1. After the power up, did you write 0xFF to status register 0xE5 to clear it and then read it back?

2. When there is no LVDS output, can you switch to the DSI84 internally generated test pattern and does it work?

Thanks
David

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SN65DSI84: Some question aboout SN65DSI84