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DS90UB941AS-Q1: 1280*640

Verna Hong
Prodigy 220 points
Part Number: DS90UB941AS-Q1


Dears,
Please help advise on how to configure registers,

PN#: DS90UB941AS-Q1 -> DS90UB928
1280*640@60

Best regard,

Verna

  • 0
    TI__Guru** 103215 points

    Hello Verna,

    See below for an example script - please adjust the TSKIP_CNT as needed based on the DSI clock rate used in your system here. I used 162MHz (54.07MHz PCLK rate) as an example: 1280*640*60*1.1 = 54.07MHz

    Fullscreen 941as 1280x640 Example.txt Download 
    # 1280x720p60, Dual Link FPD III
# PCLK = 54.07MHz
# DSI clock = 162.2MHz
# DSI Lane Speed = 324.4Mbps/lane
# 4 Lanes DSI
# DSI input port 0
# DSI non-burst mode with sync pulses 
# MODE_SEL0 strap = No. 3
# MODE_SEL1 strap = No. 0 or 1

import time

UB941AS = 0x18

board.WriteI2C(UB941AS,0x01,0x02) # Reset
time.sleep(0.1)
board.WriteI2C(UB941AS,0x01,0x08) # Disable DSI

board.WriteI2C(UB941AS,0x40,0x04) # TSKIP_CNT
board.WriteI2C(UB941AS,0x41,0x05) # TSKIP_CNT
board.WriteI2C(UB941AS,0x42,0x0C) # TSKIP_CNT

board.WriteI2C(UB941AS,0x40,0x10) # Init DSI Clock Settings (From Section 10.2 of datasheet)
board.WriteI2C(UB941AS,0x41,0x86) # Init DSI Clock Settings (From Section 10.2 of datasheet)
board.WriteI2C(UB941AS,0x42,0x0A) # Init DSI Clock Settings (From Section 10.2 of datasheet)
board.WriteI2C(UB941AS,0x41,0x94) # Init DSI Clock Settings (From Section 10.2 of datasheet)
board.WriteI2C(UB941AS,0x42,0x0A) # Init DSI Clock Settings (From Section 10.2 of datasheet)

board.WriteI2C(UB941AS,0x01,0x00) #Release DSI

    Best Regards,

    Casey