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ADS131M02: Synchronization of multiple devices

Kei Kuwahara
Expert 4890 points
Part Number: ADS131M02

Hello team,

My customer wants to synchronize the conversion timing of multiple ADS131M02.

Are below actions enough to accomplish synchronization of multiple devices? Is there anything else has to be done or missing settings to do synchronization?

1. Input negative pulse, which duration is longer than CLKIN but less than tw(RSL) into SYNC/RESET pin. Just like on the 8.5.2 of the datasheet.

2. Set the STATUS Register below F_RESYNC bit field #14 to 1b.

Best Regards,

Kei Kuwahara

  • +1
    TI__Mastermind 37160 points

    Hi Kei,

    The customer only needs to send a synchronization signal to the devices via SYNC/RESET pin. The F_RESYNC bit in the STAATUS register is a ADC resynchronization indicator and it lets you know if a resynchronization has occurred. This F_RESYNC bit is a READ ONLY bit and you can not or should not set this bit. 

    Regards,

    Dale