User Guide

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Indicator LED

There are two green LEDs beside navigation joystick for indication purposes. Unanswered calls, received SMS

and E-mail messages are indicated by blinking these LEDs. These two LEDs are powered directly from VBAT

via a switching transistor and are controlled with GENIO49.

ASICs

RAP ASIC

RAP is a GSM EDGE chip (modem ASIC) with lots of peripheral features.

The subsystems are combined at the glue level;

• processor subsystem (PSS) that includes ARM926 MCU as a main processor

• Lead3 PH3 DSP and related functions

• ASIC clock and reset control

• MCU peripherals e.g. CBUS IF, USB IF and SIM IF

• DSP peripherals e.g. speech codec

• Clock slicer. It is a block that gets low amplitude differential sinusoidal clock wave RfClkP & RfClkN 38.4MHz)

in and gives an accurate square wave out (SYSCLK 19.2MHz).

• RF Codec that includes ADC and DAC converters for the RF signal

EM ASIC (N2200)

EM ASIC (N2200) includes the following functional blocks:

• Start up logic and reset control

• Charger detection

• Battery voltage monitoring

• 32.768 kHz clock with external crystal

• Real time clock with external backup battery

• SIM card interface

• Stereo audio codecs and amplifiers

• A/D converter

• Regulators

• Vibra interface

• Digital interface (CBUS)

EM ASIC (N2300)

EM ASIC (N2300) is intended for energy management control, supply voltage generation and charge control

of mobile phone.

Device memories

RAP memories NOR flash, NAND flash and DDR SDRAM

Memory used in RM-170/171 consists of 256Mbit NOR flash memory, 256Mbit DDR-SDRAM and 1Gbit

MuxOneNand.

DDR-SDRAM is dynamic memory for Symbian SW. NOR and NAND flashes are used as a non-volatile memory

storage for Symbian SW and user data.

RM-170; RM-171

System Module Nokia Customer Care

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