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Original question:

SN65DP141: Equalization mode and RX Gain

SN65DP141: Not able to find the device slave address.

Parashuram Biradar
Prodigy 50 points
Part Number: SN65DP141

Hello,

We are using TI SN65DP141 (slave address is 0x07 and 0x06) part number DP redriver. we designed with Nvidia tx2 DP display is working fine but not able to see I2C slave address in the I2C port 0. and not able to find SN65DP141 driver in make menuconfig. 

Could you please help me out in this.

my target is to see the device is reserved (UU)in I2cdetect -y -r 0. should I need to add the DTS?. if yes please provide DTS format.

could you please confirm the Slave address of SN65DP141.

Thanks,

Parashuram

  • 0
    TI__Guru**** 177636 points

    Parashuram

    Please make sure I2C_EN is high to enable the DP141 I2C mode.

    Please make sure the SDA and SCL are pulled to 3.3V through external 10k resistor. 

    For I2C access, 

    1. START command

    2. 7 bit slave address (0000ADD [2:0]) followed by an eighth bit which is the data direction bit (R/W). A zero indicates a WRITE and a 1 indicates a READ. The ADD [2:0] address bits change with the status of the ADD2, ADD1, and ADD0 device pins, respectively. If the pins are left floating or pulled down, the 7 bit slave address is 0000000.

    3. 8-bit register address

    4. 8-bit register data word

    5. STOP command

    Thanks

    David