User Guide

PAMS
Technical Documentation
NSE–8/9
System Module
Page 2– 37
Issue 1 07/99
4.a.4 MCU turns on the keyboard and display lights
4.a.5 MCU performs PIN enquiry i.e. checks if PIN code needs to be
asked and if yes, asks it
4.b ELSE THE KEYBOARD POWER INTERRUPT IS NOT ACTIVE LONG
ENOUGH THEN THE PHONE STARTS POWER DOWN
PROCEDURE
In the end of this power up procedure the phone is in a state where it is
ready for network synchronization and communication with the user.
Real Time Clock Initiated Power Up Procedure
The RTC initiated power up procedure is used when a time alarm set in
the RTC is reached. The phone will be powered up to the POWER
ON/RTC ALARM state.
0. INITIAL CONDITIONS:
– all components except DC/DC converter and CCONT RTC powered off
– all resets active
– battery connected with sufficient energy for power up
– ALARM value set
1. REAL TIME MATCHES ALARM VALUE:
1.1 RTC logic sends power on command to CCONT analog part
1.2 CCONT checks that 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, VXO and Vcobba REGULATORS:
2.1 CCONT releases SLEEPX/VXOEna signal
2.2 CCONT waits 62 ms
3. AFTER 62 ms DELAY CCONT RELEASES POWER UP RESET
(PURX) AND SETS CCONT_INT SIGNAL ACTIVE:
3.1 MAD2PR1 takes over the system control
3.2 the SLEEPX signal control switches to MAD2PR1
3.3 MAD2PR1 notices the CCONT_INT active
3.4 MADPR1 reads the CCONT interrupt register and identifies the
alarm interrupt
4. THE PHONE GOES TO POWER ON/RTC
4.1 MCU serves the alarm
4.2 MCU turns on the SIM regulator (SIMCardPwr)
4.3 MCU flashes the keyboard and display lights and sounds the
alert
4.4 The SW asks IF the alert should be delayed IF navi–key
pressed THEN go to INITIAL CONDITION ELSE the SW asks
if the phone should be
activated for network connection
4.5 MCU performs PIN enquiry i.e. checks if PIN code needs to be