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TPS546D24A: register bit number

Fred Cheng
Expert 5660 points
Part Number: TPS546D24A

Hi  team,

may I know the format of our register address?

is it 7bit or 8bit without R/W bit?

  • 0
    TI__Guru 56735 points

     

    Per the PMBus and SMBus Standard, the provided Device Addresses are presented in 7-bit format with Bit 0 of the address byte containing the Read/Write Bit.

    The first byte of a transaction addressing a device with Address 0x24 would contain 0x24 in bits [7:1] and b'0 in bit 0 for a total 8-bit value of 0x48

    The Read Address, transmitted after a repeated start, would contain the 8-bit value 0x49 due to bit 0 = b'1