User Guide

Baseband description

System module block diagram

RM-170/171 transceiver is a S60 business voice category monoblock product. There is one system board inside

the device.

Almost all components are on the backside of the Engine Module. On the top side there are key pads, joystick,

earpiece pads, backup battery and display connector and their filtering components. All others are on the

backside.

Note: In this description, user interface HW (UI HW) covers display, camera, keyboard and keyboard

backlight.

Baseband functional description

Digital baseband consists of ISA based modem and application sections. Modem functionality is in RAP ASIC.

The modem section consists of RAP ASIC and NOR Flash and SDRAM memory as the core. NOR Flash and SDRAM

memories are in one package (Combo) RAP supports cellular protocols of GSM (minimum EDGE glass 10, GPRS

phase2). Modem SDRAM memory has 128Mbits of memory and NOR flash has 256Mbits of memory. RAP

operates with the system clock of 38.4 MHz, which comes from the VCTCXO.

Figure 67 RM-170/171 functional block diagram

RM-170; RM-171

System Module Nokia Customer Care

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