DS90UH948-Q1: 941-948

Ray Tong

Intellectual 1330 points

Part Number: DS90UH948-Q1

Using Coax seat, is this high speed back channel set to 5M or 20M? What did they choose based on?

8 months ago

0 Fadi Abdulhameed 8 months ago

TI__Mastermind 20070 points

Hey Ray,

If you choose mode 2 then your Coax configuration will be running at 5 Mbps but if you switch to mode 4 then your Coax configuration will be running at 20 Mbps back channel speed. Higher BC channel speed is mainly used for SPI and Dedicated GPIOs (D_GPIOs which are pins 16/17/18/19) to increase the BW for those functions.

Regards,
Fadi A.

0 Ray Tong 8 months ago in reply to Fadi Abdulhameed

TI__Intellectual 1330 points

hi fedi

This is the data from the screen end. May I ask what should be used to configure 20M or 5M

+1 Fadi Abdulhameed 8 months ago in reply to Ray Tong

TI__Mastermind 20070 points

Hey Ray,

This is your video timing spec which is supported by the forward channel BW. This has nothing to do with the back channel speed. If you don't have high speed SPI or need additional GPIO BW, 5M should be ok.

Regards,
Fadi A.

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DS90UH948-Q1: 941-948