Technical information

Chapter 2: Hardware Interface Description
December 15, 2009 G30 - Module Hardware Description 11
Operating Modes
G30 incorporates several operating modes. Each operating mode is different in the active features
and interfaces.
Table 2-1 summarizes the general characteristics of the G30 operating modes and provides
general guidelines for operation.
Table 2-1:
G30 Operating Modes
Mode Description Features
Not Powered VCC supply is disconnected.
VRTC is disconnected.
The G30 is Off.
Any signals connected to the interface con-
nector must be set tri-state.
RTC Mode Valid VRTC supply.
VCC supply is disconnected.
The G30 Interfaces are Off. Only the internal
RTC timer is operating. Any signals con-
nected to the interface connector must be set
tri-stated.
Off Mode Valid VCC supply.
RESET_IN signal is enabled (low).
The G30 Interfaces are Off. Only the internal
RTC timer is operating. Any signals
connected to the interface connector must be
set tri-stated.
In this mode, the G30 waits for PWR_ON
signal to turn ON.
Idle Mode RESET_IN signal is disabled (high).
CTS and DSR signals are enabled (low).
The G30 is fully active, registered to the
GSM network and ready to communicate.
This is the default power-up mode.
Sleep Mode RESET_IN signal is high.
CTS signal is disabled.
The G30 is in low power mode.
The application interfaces are disabled, but,
G30 continues to monitor the GSM network.
CSD call or
GPRS data
RESET_IN signal is high.
TXEN signal is high.
A GSM voice or data call is in progress.When
the call terminates, G30 returns to the last
operating state (Idle or Sleep).