User Guide

RH-23 Company confidential
System Module and User Interface CCS Technical Documentation
Page 4 Nokia Corporation. Issue 1 02/2004
Electrical Modules
The RH-23 has been split into two different parts. The System Module 1AQ consists of:
Baseband (BB) Engine, FM-radio, Vibra, IR link, Pop-Port system connector, hardware
accelerator for camera and Radio Frequency (RF) parts.
The upper block flex 1BG consists of: Colour LCD (primary), B&W display (secondary),
camera, earpiece, IHF speaker, SIM connector and antenna
System module and upper block flex are connected together with a hinge flex 1BF via
40-pin board-to-board connectors.
The keyboard is located in separate UI PWB named 1BF. 1BF is connected to system mod-
ule through a board-to-board connector.
The baseband blocks provide the MCU, DSP, external memory interface and digital con-
trol functions in the UPP ASIC. Power supply circuitry, charging, audio processing and RF
control hardware are in the UEM ASIC.
The purpose of the RF block is to receive and demodulate the radio frequency signal from
the base station and to transmit a modulated RF signal to the base station.
Figure 1: Interconnection Diagram
Upper Block
Module 1BG
System Module
1AQ
Antenna
Earpiece
Displays
IHF Speaker VGA Camera
SIM
Battery
Charger
Accessories
IR Link
Microphone
Keyboard
module
Vibra