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BQ76952: BQ76952 how to config CRC function using the BQstudio

Part Number: BQ76952
Other Parts Discussed in Thread: EV2400, BQSTUDIO

HI, TI team

          we are using the BQ76952 for AFE design,  as below table show, BQ76962 (no suffix)default is I2C function, and CRC is NOT enable.

And we want to use the CRC function and don't change the chip, so we think is use the OTP function to program the AFE to enable the CRC function, Could you help to share how to config it in TI tool BQ studio?


  • Hello Bode,

    Please see below. 0x11 or 0x12 could be used depending on the bus speed.

    After writing to the register, click on the Write All command on the top right corner

    For details on OTP, please see this App Note and also this FAQ.

    Jose Couso

  • Jose

            Thanks for your reply. 

           After write Comm type =0x11, this could enable the CRC function,  After that, I do the click the "SWAP_COMM_MODE" to make the BQ studio re-communication with the AFE. and  BQ studio also could recognize the AFE voltage and temperature, etc., that is expected. 

           New question is when I try to read the data memory data from AFE, it failed, it show failure information" Operation failed because initial read of all data flash failed " . Could you help give more suggestion?

  • Hello Bode,

    Please update the EV2400 version to the latest firmware (Version 0.32). This can be found in the product page
    Note: Close BQStudio while updating the EV2400 FW.

    Once the firmware is updated. Start BQStudio and it should read the red below

    At this point, write 0x11 to Comm Type register and restart BQStudio. DO NOT power cycle the device, otherwise the default configurations will upload.

    Please let me know if this fixes the issue.

    Jose Couso

  • Hi, Jose

                Thanks a lot,  according the steps your description update EV2400 to 0.32, I could read the config data after change the CRC. This could fix the issue.