BG95 psm - signaling to external micro controller


I hope someone can assist with the following Q.

We want to use bg95 as at command modem.

We have an external microcontroller connected via uart i/f

When bg95 is set into PSM via AT command.

  • what happens when BG95 RTC timeout - how will this be reflected to the ext. microcontroller?
  • with UART i/f ?
    or/and with an gpio output on BG95?
    or else?

when BG95 module enter PSM mode , the state is similar to powndown , there are nothing to output , ( inculde UART)

in module internal , only RTC is on ,when the PSM timer is time out , the module will powerup automatically .

I attached one psm related doc for your reference .