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TCA9546A: TCA9534A

Carlos Yuan
Prodigy 20 points
Part Number: TCA9546A
Other Parts Discussed in Thread: USB2ANY, TCA9539

TCA9546A is used with TCA9539, how to use USB2ANY for communication？

TCA9546 A2A1A0 connect to ground salve address0x70, how to understand control register??(need to config channel 0 and channel1) register address=0x00??? data write ??

write register address 0x00 data 01 to enable channel 0

next need to write TCA9539 salve address 0x74 register address 6-7 data 0x0F 0xFF 

what should i do?

  • 0
    Guru 275980 points

    The TCA9546A has only a single register, so it does not have register addresses. Every bytes you write goes directly to the configuration register. You should not write "0x70 0x00 0x01" but only "0x70 0x01".

    For the TCA9539, you can write the contents of both registers directly after the address of the first register, i.e., "0x74 0x06 0x0F 0xFF".