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BQ79600-Q1: BQ79616-Q1; BQ79631-Q1

Ramchandra Bhosale
Prodigy 90 points
Part Number: BQ79600-Q1

Tool/software:

Dear TI team,

Consider in the daisy chain configuration with BQ79600 ic as a communication interfaces, 

there are n number of BQ796x6 devices.

Suppose the supply and all the power cables going to nth number device ( last device in daisy chain )

is removed, then is it possible to receive the data from other (n-1) devices ?

Thanks

Ramchandra Bhosale.

  • 0
    TI__Expert 7010 points

    Hi Ramchandra,

    If the nth device is removed, there is no more device with the Top of stack bit = 1. This would most likely be found out due to the 600 not replying to the MCU's read request. In this particular case, the following should be performed:

    1. a comm clear should be sent to clear the BQ79600's buffers. This will allow communication to resume.

    2. device (n-1)'s top of stack bit should be set to 1 through a single device write command. This will allow the stack to respond to broadcast and stack reads again.

    Regards,

    David