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DS90UB941AS-Q1: Register setting procedure

Youhei Miyaoka
Expert 4025 points
Part Number: DS90UB941AS-Q1

Tool/software:

Hi team,

My customer want to use UB941AS-UB948 combination. 

Is there any register setting procedure manual? They don't understand in what order to set.

Regards,

Youhei MIYAOKA

  • 0
    TI__Guru 66840 points

    Hi Miyaoka-san, 

    Register programming is highly dependent on customer use-case and configuration; and in basic set-ups might not even be required. 

    Can you share more of what customer is looking for?

    Regards, 
    Logan

  • 0 in reply to Logan Cummins
    TI__Expert 4025 points

    Hi Logan,

    Thank you. I'll ask to the customer and feedback to you internally.

    Regards,

    Youhei MIYAOKA

  • 0 in reply to Youhei Miyaoka
    TI__Expert 4025 points

    Hi Logan,

    They want to know FPD3 overview material. I mean, like user guide for FPD3 Ser/Des settings.

    Is there any material like that?

    Regards,

    Youhei MIYAOKA

  • 0 in reply to Youhei Miyaoka
    TI__Guru 66840 points

    Hi Miyaoka-san, 

    Please refer customer to the datasheet for these devices. It has register guide with descriptions and breaks down all applicable features they might want to deploy. 

    Below is an example script for 941 customer can use as basic reference. 948 doesn't always need any config depending on whether or not the ModeSel straps settings need overridden.

    Fullscreen 941AS_init_example_1080p.txt Download 
    ## Pixel Clock = 148.5 MHz (eg. for standard 1080p)
## DSI clock = 445.5 MHz

## DSI input port 0
## 4 lanes DSI

 
import time

serAddr = 0x18
desAddr0 = 0x58

#RESET 941
board.WriteI2C(serAddr,0x01,0x02)

#Disable DSI
board.WriteI2C(serAddr,0x01,0x08)

board.WriteI2C(serAddr,0x1E,0x01) # Select DSI0
board.WriteI2C(serAddr,0x4F,0x8C) # Set single DSI0 mode - continuous clock mode

board.WriteI2C(serAddr,0x40,0x04) # TSKIP_CNT DSI0
board.WriteI2C(serAddr,0x41,0x05) # TSKIP_CNT DSI0
board.WriteI2C(serAddr,0x42,0x30) # TSKIP_CNT DSI0, TSKIP_CNT (dec)= 24


board.WriteI2C(serAddr,0x40,0x04) # Set HSYNC/VSYNC Polarity DSI0
board.WriteI2C(serAddr,0x41,0x21) # Set HSYNC/VSYNC Polarity DSI0
board.WriteI2C(serAddr,0x42,0x60) # Set HSYNC/VSYNC Polarity DSI0


board.WriteI2C(serAddr,0x40,0x10) # Init DSI Clock Settings (From Section 10.2 of datasheet)
board.WriteI2C(serAddr,0x41,0x86) # Init DSI Clock Settings (From Section 10.2 of datasheet)
board.WriteI2C(serAddr,0x42,0x0A) # Init DSI Clock Settings (From Section 10.2 of datasheet)
board.WriteI2C(serAddr,0x41,0x94) # Init DSI Clock Settings (From Section 10.2 of datasheet)
board.WriteI2C(serAddr,0x42,0x0A) # Init DSI Clock Settings (From Section 10.2 of datasheet)

#Enable DSI
board.WriteI2C(serAddr,0x01,0x00)

    Regards, 

    Logan