LEON-G100 / LEON-G200 - System Integration Manual
GSM.G1-HW-09002-G3
Preliminary
System description
Page 14 of 125
Operating Mode
Description
Features / Remarks
Transition condition
Connected-Mode
Voice or data call enabled.
Microprocessor runs with
26 MHz as reference
oscillator.
The module is ready to accept
data signals from an external
device.
The module is switched on and a voice
call or a data call (GSM/GPRS) is in
progress.
Module is fully active.
Application interfaces are enabled.
When call terminates, module returns to
the last operating state (Idle or Active).
General Status: Charging (LEON-G200 only)
Pre-charge mode
Battery connected to
VCC
.
Battery voltage level is below
the
VCC
normal operating
range.
Charger connected to
V_CHARGE
and
CHARGE_SENSE
inputs with
proper voltage and current
characteristics.
Charging of the deeply
discharged battery is enabled
while the module is switched
off.
Microprocessor switched off
(not operating).
Module is switched off and cannot be
switched on (not powered mode).
The Pre-Charge phase of the charging
process is enabled: charging of the
deeply discharged battery is forced by
HW at low current while the module is
switched off
When battery voltage level reaches the
VCC
normal operating range with a
charger connected to
V_CHARGE
and
CHARGE_SENSE
inputs, the module
enters charge mode.
Charge-mode
Battery connected to
VCC
.
Battery voltage level is within
the
VCC
normal operating
range.
Charger connected to
V_CHARGE
and
CHARGE_SENSE
inputs with
proper voltage and current
characteristics.
Charging process enabled
while the module is switched
on and normal operations are
enabled.
Microprocessor runs with
32 kHz or 26 MHz as
reference oscillator.
Module is switched on and normal
operations are enabled (Idle mode,
Active mode or Connected mode).
The charging process is enabled:
charging of battery is controlled by the
microprocessor while the module is
switched on
When the charger is removed from
V_CHARGE
and
CHARGE_SENSE
inputs, the module returns to normal
operations (Idle-mode, Active-mode or
Connected-mode).
Table 2: Module operating modes summary
