Nokia 6020b Service Manual

 RM-31

Nokia Customer Care

7 - System Module

16

COMPANY CONFIDENTIAL

Issue 1 03/2005

Copyright © 2005 Nokia. All Rights Reserved.

■ 

Main characteristics of the used UPP are:

• DSP, LEAD3 16 bit DSP core 32 bit IF max. 200 MHz

• MCU based on ARM7 RISC MCU core max 50 MHz

• Internal 8 Mbit SRAM (PDRAM)

• General purpose UARTS

• SIM card interface

• Accessory interface (ACI)

• Interface control for Keypad, LCD, Audio and UEM control

• Handling of BB-RF Interface

Main characteristics of the used UEMEK are:

• ACI support

• Audio codec

• 11 Channel A/D converter

• Auxiliary A/D converter

• 32 KHz crystal oscillator 

• SIM interface and drivers

• Security logic

• Storage of IMEI code

• Buzzer and vibra motor drivers

• PWM

• 2 LED drivers, keyboard and display backlight drivers

• Voltage reference for analogue blocks

• Charging function

• Baseband regulators

• RF regulators

• RF interface converters