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bq76PL455A-Q1 questions

Allan Fan
Expert 5730 points

Team,

I have some questions below:

1. To enter power state via command is to all devices on the stack but can it be done in any stack position?

2. Can host address parallel devices? I don't think so but just want to confirm.

Regards,

Allan

  • 0
    TI__Intellectual 2795 points

    Hi Allen,

    A wakeup can be issued from any IC in the stack. Setting the DEV_CTRL[STACK_WAKE] bit will send the wake tone from the COMMH interface to all higher stacked ICs.

    In regard to your second question about addressing parallel devices, can you please provide a diagram of what you are calling 'parallel devices'? The daisy-chain communications is connected to look like a series of ICs, but the physical connection to the cells can be in parallel if desired, though this is not common. The host can send a group broadcast or broadcast message which will address all ICs in a stack.

    Is the customer designing a stack with multiple parallel strings of cells, instead of a series of parallel cells?