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LEON-G100/G200 - System Integration Manual

GSM.G1-HW-09002-C Preliminary System description

Page 15 of 75

General Status

Operating Mode

Description

Features / Remarks

Connected-Mode

Voice or data call enabled.

Microprocessor runs with 26

MHz as reference oscillator.

Module is prepared 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).

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.

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

slow current while the module is switched off

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.

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

Table 2: Module operating modes summary

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 74 75

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