User Guide

Baseband description

System module block diagram

The device consists of two different main modules: transceiver and UI/slide module. Transceiver board

consists of baseband and RF components. UI/slide module consists of UI-FPC and keys.

Baseband functional description

Digital baseband consists of an ISA (Intelligent Software Architecture) based modem and symbian based

application sections. The modem functionality is in RAPIDOYawe, and the application processor acts as a

platform for Symbian applications.

The modem section consists of a RAPIDOYawe ASIC with combo memory (128Mbit NOR Flash + 128Mbit SDRAM)

as the core. RAPIDOYawe supports WCDMA/HSDPA and GSM protocols. RAPIDOYawe operates with the 38.4MHz

system clock, which comes from VCTCXO, and provides 19.2MHz system clock to application processor.

The application section includes an application processor ASIC OMAP2420 with combo memory (512Mb DDR

+ 2G NAND) as the core. Combo memory is soldered Package-On-Package (POP) on top of OMAP2420.

Absolute maximum ratings

Signal Min Nom Max

Uni

Notes

Battery voltage (idle) -0.3 +4.5 V Battery voltage maximum value is

specified during charging is active

Battery voltage (Call) +3.2 +4.3 V Battery voltage maximum value is

specified during charging is active

Charger input voltage -0.3 +20 V

Back-Up supply voltage 0 2.5 2.6 V Maximum capacity of the backup

power supply assumed to be 4 µAh.

RM-313

System Module

Issue 1 COMPANY CONFIDENTIAL Page 6 –5