User Guide

RH-27

System Module CCS Technical Documentation

Introduction

This document describes the system module for the RH-27 transceiver. The baseband

module includes the baseband engine chipset, the UI components, and the acoustic com-

ponents. RH-27 is a hand-portable dual band CDMA 850/1900 with AMPS. It has been

designed using DCT4 generation baseband (UEM/UPP) and RF module. The baseband

module has been developed as part of the DCT4 common Baseband. RH-27 contains

some baseband features that are new to the America's CDMA market. These features

include stereo FM receiver (offered as an accessory) and a MIDI (polyphonic ringing

tones). The battery for RH-27 is the BLD-3 with a nominal capacity of 780 mAh.

BB Hardware Characteristics

• Hi-Resolution (128x128) illuminated color display

• Active LCD pixel area: width 27.6mm X height 27.6mm

• ESD-proof keymat, with five individual keys for multiple key pressing

• Support for internal semi-fixed battery (Janette type BLD-3)

• Audio amplifier and SALT speaker for MIDI support

• Ringing volume 100dB @ 5cm (MIDI tones through SALT speaker)

• Stereo FM receiver as an accessory

• IrDa port/interface

• Internal vibra

• Supports voice dial activation via headset button

• Six white LEDs for keymat on UI board and two for LCD backlight in LCD module

• 6-layer PWB, SMD with components on both sides of PWB

Technical Summary

The baseband module is implemented using two main ASICs — the Universal Energy

Management (UEM) and the Universal Phone Processor (UPP). The baseband module also

contains an audio amplifier for MIDI support and a 64-Mbit Flash/ 4-Mbit SRAM combo

IC. EMC shielding is implemented using a metallized plastic frame. On the other side, the

engine is shielded with PWB ground openings. Heat generated by the circuitry is con-

ducted out via the PWB ground planes. The RH-27 transceiver module is implemented on

six layer FR-4 material PWB.