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ADS1601 interface with PIC32 SPI Frame mode

Pavel Haintz
Prodigy 70 points
Other Parts Discussed in Thread: ADS1601

I am looking at interface the ADS1601 with the PIC32, which supports framed mode on the SPI port.  The PIC32 would be the slave and the ADS1601 would be the master. Should this work?

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    TI__Mastermind 46290 points

    Hi Pavel,

    Welcome to the E2E forums!

    I am not extremely familiar with the PIC32 SPI peripheral, but it seems like things should work fine. Figure 23-11 from the PIC32MX Family Reference Manual looks like something that would jive well with the ADS1601, or at least a start.

    My only concern is how the PIC will react to receiving a frame sync pulse while it is still receiving the LSB. The ADS1601 will continuously be transferring conversion results with frames back to back. Some SPI peripherals have limitations on back-to-back frames such that specific clock phase and polarity are required, but that should not be a problem since the ADS1601 provides complimentary signals for the serial interface.