LTC4332 SS1-3 Pins

Hello

I am trying to use 2 LTC4332 ICs at default configuration. Do I need to use SS1-3 pins on the local side? Can I just simply connect them to GND or VL? Also when trying to send data to remote side, SSC pin of the IC is set to high. This is correct right?

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  • +1
    •  Analog Employees 
    on Dec 15, 2020 3:10 PM

    Hi,

    The SSC pin is used to access the internal registers of the local LTC4332. The SSC1-3 are used to select individual remote SPI slave devices. So if the intention is to communicate with a remote SPI slave device, one (and only one) of the SS1-3 will need to be asserted on the local LTC4332. That chip select signal will be reproduced on the remote side LTC4332. 

    Jason

Reply
  • +1
    •  Analog Employees 
    on Dec 15, 2020 3:10 PM

    Hi,

    The SSC pin is used to access the internal registers of the local LTC4332. The SSC1-3 are used to select individual remote SPI slave devices. So if the intention is to communicate with a remote SPI slave device, one (and only one) of the SS1-3 will need to be asserted on the local LTC4332. That chip select signal will be reproduced on the remote side LTC4332. 

    Jason

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