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LP8764-Q1: FSM state Readable via register . Multiple I2C addresses to register mapping

Part Number: LP8764-Q1

a) When the PMIC is functional ? Is there a way to read the current FSM state where the device is working now ?

b) Four I2C address are taken up by a PMIC device. How are the addresses provided in the register map assigned across these four I2C device addresses ?

c) While including watchdog error in the FSM, is it possible to mask the longwindow expiration timeout from the probable cause for generating the watchdog error ?

d) sometime it take a lot of time for the device to be unlocked while trying to do a validation of the NVM content. How can we avoid that ?

e) Many times the connection to the device gets lost or controller not connected messages keep popping up. How to fix this ?

f) How to save the config file with the same name and location instead of saving by a generic file name in the download directory ? The binary files also gets stored in the download directory and not the project directory

  • Hi Bala,

    a. There is no way to read back PFSM mission state status. It must be understood in the given condition (ENABLE high/low), regulators up/down, interrupts set or not.

    b. See https://www.ti.com/lit/an/slvaf93a/slvaf93a.pdf?#page=2 table 1-1 and page 8 table 5-2 for more information.

    c. If WD_EN=1 while device starts and right after when nRSTOUT is set high WD_LONGWINDOW timer starts. WD long window cannot be masked but WD_PWRHOLD can be set to prolong WD long window as long as needed.

    d. Are you using GUI over browser or installed version? I would prefer installed version but still you can have some delays.

    e. Same as above. We are working on the GUI to fix some connection issues as well.

    f. If you are using browser it is browser settings related, please take a look on browser settings. For installed version GUI you can define saving location.

    Br, Jari