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BQ79600-Q1: SPI function consult

Part Number: BQ79600-Q1

Hi Team,

Customer wants to know the recommended reasons for below note shown in below screen-shot. Could you pls help customer clarify the reason here? Many thanks.

Best,

Stanley

  • Hi Stanley,

    The reason is that since the BQ79600 device is actively pulling the MISO pin high during non-use, if other devices try to pull the MISO line low, there will be a lot of current flowing from the  BQ79600 MISO pin to the other device that is trying to pull this pin low.

    For better signal integrity the MISO driver in the BQ79600 device is not a high-impedance pull-up but rather an active push-pull driver.

    Regards,

    Viktor.