User Guide

PAMS
Technical Documentation
NSE–8/9
System Module
Page 2– 36
Issue 1 07/99
3.1 MAD takes over the system control
3.2 the SLEEPX signal control switches to MAD
3.3 MAD notices the CCONT_INT active
3.4 MAD reads the CCONT interrupt register, identifies the charger
interrupt and starts to control the charging
In the end of the power up procedure initialized by adding the charger the
phone goes to ”POWER ON ACTING DEAD” state. In this state the only
indication to the user are the battery charging alert and the scrolling
battery mark in the display. In ”POWER ON ACTING DEAD” state no
actions against GSM network are done, the phone remains unknown to
the network.
Power Button Initiated Power Up Procedure
0. INITIAL CONDITIONS:
– all components except DC/DC converter and CCONT RTC are powered
off
– all resets active
– battery connected with sufficient energy for power up
– charger is not connected
5
1. POWER BUTTON PRESSED:
1.1 CCONT identifies the PWRONX signal activation
1.2 CCONT checks that the Vdc_out exceeds 3.0 V
1.3 CCONT powers on its digital logic
1.4 CCONT releases the reset of its digital logic after 50 us setup
time
2. CCONT RELEASES VBB, VCXO and Vcobba REGULATORS:
2.1 CCONT releases SLEEPX/VXOEna signal
2.2 CCONT waits 62 ms
6
3.a. IF PWRONX ACTIVE AFTER 62 ms DELAY THEN CCONT
RELEASES POWER UP RESET (PURX):
3.1 MAD takes over the system control
3.2 the SLEEPX signal control switches to MAD
3.b. ELSE PWRONX NOT ACTIVE AFTER 62 ms THEN CCONT GOES
TO POWER OFF:
4.a IF THE KEYBOARD POWER INTERRUPT IS ACTIVE LONG
ENOUGH
7
THEN THE PHONE GOES TO POWER ON/POWER BUTTON
STATE
4.a.1 MAD system logic releases MCU reset
4.a.2 MCU serves the power button interrupt
4.a.3 MCU turns on the SIM regulator (SIMCardPwr)
If charger is connected the phone is not in power off state but in POWER ON ACTING
DEAD state and hence this power up procedure is not applicable
The 62 ms setup time is used for VCXO settling
The time is checked by MCU SW