User Guide

PAMS
Technical Documentation
NSB–1
System Module
Original 06/98
Page 3 – 14
External interfaces
UR4
ENGINE
Antenna
Battery
Pack
Charger
Display
Module
Keyboard
Speaker
Buzzer
IBI
Bottom
connectorconnector
User
Interface
3
4
6
28
Mic
Backlights
SIM
6
Connector Name Code Notes
Bottom & IBI connector 5469061 Includes DC plug, external audio, and data
lines.
User Interface Module connector 5460021 28 pins, spring contacts.
Battery connector 5469069 2 pieces, 2 connections each.
SIM connector 5400085 Supports 3V/5V SIM cards.
RF connector 5429007
Flash Programming connector
The system connector can be used as a flash prom programming interface for
flash memories for updating (i.e. re–programming) the flash program memory.
The phone has to be switched off, when the flash prommer is connected to the
phone system connector. The baseband is powered up as the supply voltage
is connected to the charger contacts, or by pressing the PWR button, or by an
IBI device..
The program execution starts from the BOOT ROM and the MCU investigates
in the early start–up sequence if the flash prommer is connected. This is done
by checking the status of the MBUS–line. Normally this line is high but when
the flash prommer is connected the line is forced low by the prommer. The
flash prommer serial data receive line is in receive mode waiting for an ac-
knowledgement from the phone. The data transmit line from the baseband to
the prommer is initially high. When the baseband has recognized the flash
prommer, the TX–line is pulled low. This acknowledgement is used to start the
data transfer of the first two bytes from the flash prommer to the baseband on
the RX–line. The data transmission begins by starting the serial transmission
clock (MBUS–line) at the prommer.
The 3V programming voltage is supplied inside the transceiver from the battery
voltage with a switch mode regulator (3V/30mA) of the CCONT. The voltage is