User Guide

PAMS
Technical Documentation
NSE–3
System Module
Page 3 – 9
Original 11/97
RF Connector Contacts
Con-
tact
Line
Symbol
Parameter Mini-
mum
Typical
/ Nomi-
nal
Maxi-
mum
Unit / Notes
1 EXT_ANT
Im
p
edance
50ohm
External antenna connec-
tor
2 GND
Im edance
50ohm
tor
,
0 V DC
Supply Voltages and Power Consumtion
Connector Line Symbol Minimum Typical /
Nominal
Maximum/
Peak
Unit / Notes
Charging VIN 7.1 8.4 9.3 V/ Travel charger,
ACP–9
Charging VIN 7.25 7.6 16.0 V/ Travel charger.
ACP–7
Charging I / VIN 720 800 850 mA/ Travel char-
ger, ACP–9
Charging I / VIN 320 370 420 mA/ Travel char-
ger, ACP–7
Functional Description
The transceiver electronics consist of the Radio Module ie. RF + System
blocks, the UI PCB, the display module and audio components. The key-
pad and the display module are connected to the Radio Module with a
connectors. System blocks and RF blocks are interconnected with PCB
wiring. The Transceiver is connected to accessories via a bottom system
connector with charging and accessory control.
The System blocks provide the MCU, DSP and Logic control functions in
MAD ASIC, external memories, audio processing and RF control hard-
ware in COBBA ASIC. Power supply circuitry CCONT ASIC delivers oper-
ating voltages both for the System and the RF blocks.
The RF block is designed for a handportable phone which operates in the
GSM system. The purpose of the RF block is to receive and demodulate
the radio frequency signal from the base station and to transmit a modu-
lated RF signal to the base station. The PLUSSA ASIC is used for VHF
and PLL functions. The CRFU ASIC is used at the front end.