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Original question:

SN65DSI83: SN65DSI83 TEST

SN65DSI83: SN65DSI83 I2C address

hailei yang
Prodigy 30 points

Part Number: SN65DSI83

This is my schematic diagram. Most of the time, through Linux tools, I can communicate with the IC using address 0x2C, but occasionally the address changes to 0x2D.  Is the schematic diagram wrong?

image.png

  • 0
    TI__Mastermind 29400 points

    Hi Hailei,

    If the device ADDR pin is connected to 1.8V rail, the address will be 0x2D. If it is connected to directly to ground, the address will be 0x2C. Note that these are 7-bit addresses.

    Is the controller successfully reading/writing the registers with the 0x2C address? You could also try it connecting directly to ground by replacing the ADDR 1kOhm resistor with a 0-Ohm resistor.

    Best regards,
    Ikram