User Guide

Baseband description

System module block diagram

The device consists of two different main modules: transceiver (1jq) and UI (1ke). The transceiver board

consists of baseband and RF components

The UI board consists of key domes and keypad backlights. Connection between the UI and the transceiver

board is established via a board-to-board spring connector.

Note: In this description, user interface HW covers display, keyboard, keyboard backlight and ALS.

Figure 66 System level block diagram

Baseband functional description

Digital baseband consists of ISA based modem and SYMBIAN based application sections. Modem functionality

is in RAP and application processor acts as a platform for SYMBIAN applications.

Modem section consists of RAP ASIC with NOR FLASH and SDRAM memory as the core. RAP supports cellular

protocols of WCDMA (3GPP Release 4) and GSM (minimum EDGE class 10). Modem section has 64Mbits of SDRAM

and 64Mbits of NOR flash memory. RAP operates with the system clock of 38.4 MHz, which comes from the

VCTCXO.

Application section includes the application processor with DDR/NAND combo memory as the core. Stacked

DDR/NAND application memory has 512Mbits of DDR memory and 1G of flash memory. The application

processor uses 19.2MHz clock, which comes from the RAP divided by two from the 38.4 MHz system clock.

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System Module Nokia Customer Care

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