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Original question:

DRV10983: Start-Up Current Setting

DRV10983: I2C Mode Speed Control

Naizeng Wang
Expert 3735 points
Part Number: DRV10983

Hi team,

When SpdCtrl [8] is written to the SpeedCtrl2 register, the data is stored, but the output is not changed. Why there is a buffer of SpdCtrl [8]? When will the SpdCtrl [8] of speed command be updated?

  • 0
    TI__Mastermind 24405 points

    Hi Naizeng,

    The reason why data written in SpeedCtrl2 register is stored and not changed is because bit 9 of SpdCtrl is the MSB and this MSB should be written first before writing the LSB. Only after writing LSB, device updates speed command.

    Regards,

    Vishnu.