Specifications

XT65/XT75 Hardware Interface Description
3.3 Power-Up / Power-Down Scenarios
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Figure 6: Power-on with IGT held low before switching on operating voltage at BATT+
If the IGT line is driven low for less than 400ms the module will, instead of starting up, send only the alert mes-
sage "SHUTDOWN after Illegal PowerUp" to the host application. The alert message appears on the serial inter-
face ASC0 at a fixed bit rate of 115200bps. If other fixed bit rates or autobauding are set, the URC delivers only
undefined characters. The message will not be indicated on the USB interface.
For details on how to use EMERG_RST to reset applications
or external devices see Section 3.3.1.6.