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DRV8311: Register reset value error

coolstuart Soo
Prodigy 20 points
Part Number: DRV8311


Hi,

I am currently communicate with 2 DRV8311P chips with tSPI.  After power on, some registers value are different with the datasheet as below:

DEV_STS1(0x00) is 0x0081, datasheet is 0x0080;

FLT_MODE(0x10) is 0x0015, datasheet is 0x0115;

PWMG_PERIOD(0x18) is 0x03e8, datasheet is 0x0000;

PWMG_CTRL(0x1D) is 0x001D, datasheet is 0x0000;

DRV_CTRL(0x22) is 0x0003, datasheet is 0x0000;

SYS_CTRL (0x3F) is 0x0008, datasheet is 0x0000.

Why does DRV8311P has this issue?

  • 0
    TI__Guru* 81380 points

    Hi,

    Because of the Thanksgiving holiday in the U.S, please expect a delayed response from our experts during the week of Nov. 20. Thank you for your patience and sorry for any inconvenience.

    Thanks

  • 0 回复 Cherry Zhou
    TI__Guru* 81380 points

    Hi,

    Sorry for the late response.

    We will be aiming to provide a further update before the end of this of this week, and would like to ask if these register values observed match up with the device output/state?

    For example, with DRV_CTRL = 0x0003h, does this correlate with the device having the slew rate setting of 230 V/uS following the register map (below)?

    Thanks