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BQ79600-Q1: How to drive MOSI to 1 in idle state with TC377?

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Prodigy 20 points
Part Number: BQ79600-Q1

We use Infineon TC377 as the host and the output state of the MOSI pin is determined by the state of the last bit of data sent by the host.

According to BQ79600 datasheet, master shall always drive MOSI to ‘1’ when not sending command frame into device.

How can I achieve this?

  • 0
    TI__Expert 5340 points

    Hi Kunling,

    The MOSI pin should be driven high as continuous intervals of pulling low will generate different types of pings.to the BQ79600 depending on how long the MOSI pin is driven low. As we do not know Infineon's IC set, I recommend contacting Infineon on how to set the output state to always be driven high when idle.

    Regards,

    David