Nokia 9000i - Modes of Operation; Acting Dead Mode; Active Mode; Idle Mode

After Sales
Technical Documentation
RAE/RAK–1N
Baseband
Page 2–7
Original, 08/96
Modes of Operation
There are four different operation modes
– active mode
– idle mode
– acting dead mode
– power off mode
Active Mode
In the active state all circuits are powered and part of the module may be
in idle mode.
Idle Mode
The module is usually in the idle mode when there is no call and the
phone is in SERV. In the idle mode circuits are reset, powered down and
clocks are stopped or the frequency reduced. All the clocks except the
main clock from VCXO can be stopped in that mode. Whether the SIM
clock is stopped or not depends on the network.
Acting Dead Mode
The acting dead mode means that the baseband is powered but there is
no difference from the power off mode from the user point of view. The
acting dead mode is used for performing some necessary control
functions such as battery voltage measurement and reporting to PDA
module.
Power Off Mode
In power off mode only the circuits needed for power up are powered. This
means that only power up block inside the PSL+ is powered. The power
key is pulled up with a pull up resistor inside the PSL+.
Performance Specifications
DC Characteristics
Table 3. Supply Voltages and Power Consumption
Pin / Conn.
Line Symbol Minimum Typical /
Nominal
Maximum Unit / Notes
4 / BATT
1 / B2B
VBATT, VB
5.75V 7.2V – Software limit
1 / B2B
44 / B2B
1 / SIMFLEX
4.8V 7.2V 8.7
+/–0.3V
Hardware limits
(cut–off min,
charging max)
4.8V 7.2V 7.6
+/–0.3V
Hardware limits
during a call