Nokia 6820a Service Manual 03 nsb 9 sysmod

CCS Technical Documentation

NSB-9 Series Transceivers

System Module and User

Interface

Issue 1 04/03 Nokia Corporation

NSB-9

System Module and User Interface CCS Technical Documentation

Page No

Glossary of terms ........................................................................................................... 3

Introduction.................................................................................................................... 6

System Module: Baseband............................................................................................. 7

Baseband Module, technical summary ........................................................................7

Baseband Technical Specifications .............................................................................9

Absolute Maximum Ratings...................................................................................... 9

DC Characteristics..................................................................................................... 9

Power Distribution diagram .................................................................................... 11

Baseband External and Internal Signals and Connections ........................................12

Internal Signals and Connections............................................................................ 12

External Signals and Connections........................................................................... 18

Baseband Functional Description ................................................................................ 23

Modes of Operation ...................................................................................................23

No supply ................................................................................................................ 23

Backup..................................................................................................................... 23

Acting Dead............................................................................................................. 23

Active ...................................................................................................................... 23

Sleep mode .............................................................................................................. 24

Charging .................................................................................................................. 24

Power Up and Reset ...................................................................................................24

Power up with PWR key ......................................................................................... 25

Power up when charger is connected ...................................................................... 25

Power up when battery is connected ....................................................................... 26

RTC alarm power up ............................................................................................... 27

A/D Channels .............................................................................................................27

FM Radio ...................................................................................................................28

FM-radio audio connections.................................................................................... 29

Keyboards ..................................................................................................................29

Engine Keyboard..................................................................................................... 29

Flip .......................................................................................................................... 30

Flip keyboard........................................................................................................... 30

Flip position detection............................................................................................. 31

IR Module ..................................................................................................................31

SIM Interface .............................................................................................................31

System Connector ......................................................................................................33

External accessory regulator ......................................................................................33

Battery ........................................................................................................................34

Backup Battery ..........................................................................................................35

LCD & Keypad Illumination .....................................................................................36

LCD ...........................................................................................................................37

ACI ............................................................................................................................38

External Audio ...........................................................................................................38

External Microphone Connection ........................................................................... 38

External Earphone Connections .............................................................................. 40

Internal Audio ............................................................................................................40

Internal Microphone................................................................................................ 40

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CCS Technical Documentation System Module and User Interface

Internal Speaker....................................................................................................... 41

Integrated Hands Free ............................................................................................. 41

Memory Block ...........................................................................................................42

Security ......................................................................................................................42

Production / After Sales Interface ..............................................................................43

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NSB-9

System Module and User Interface CCS Technical Documentation

Glossary of terms

ACI Accessory Control Interface

ADC Analog-Digital Converter

AEC Acoustic Echo Canceller

AFC Automatic Frequency Control

AGC Automatic Gain Control

AIF Application Interface

ALWE Background noise suppressor

AMS After Market Service

AMR Adaptive Multi Rate

ARM Processor architecture

ASIC Application Specific Integrated Circuit

BB Baseband

CBus Control Bus

CCS Customer Care Solutions

CMT Cellular Mobile Telephone (MCU and DSP)

CPU Central Processing Unit

CTSI Clocking Timing Sleep Interrupt

COG Chip On Glass

CSP Chip Scale Package

CSTN Color Super Twisted Nematic

DAC Digital-Analog Converter

DAI Digital Audio Interface

DB Dual band

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CCS Technical Documentation System Module and User Interface

DCN Offset Cancellation control signal

DLL Dynamic Link Library

DRC Dynamic Range Controller

DSP Digital Signal Processor

EFR Enhanced Full Rate

EMC Electromagnetic compatibility

EMI Electromagnetic Interference

ESD Electro Static Discharge

EXT RF External RF

FBUS Asynchronous Full Duplex Serial Bus

GPRS General Packet Radio Service

GSM Global System for Mobile communications

HS Half Rate Speech

HSCSD High Speed Circuit Switched Data

IC Integrated Circuit

IHF Integrated Hands Free

I/O Input/Output

IrDA Infrared Association

LCD Liquid Crystal Display

LDO Low Drop-Out

LNA Low Noise Amplifier

MBUS 1-wire half duplex serial bus

MCU Micro Controller Unit

MDI MCU-DSP Interface

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System Module and User Interface CCS Technical Documentation

MFI Modulator and Filter Interface

PA Transmit Power Amplifier

PC Personal Computer

PCM Pulse Code Modulation

PCM SIO Synchronous serial bus for PCM audio transferring

PIFA Planar Inverted F-antenna

PWB Printed Wiring Board

RF Radio Frequency

SIM Subscriber Identity Module

UEM Universal Energy Management

UI User Interface

UPP Universal Phone Processor

VCXO Voltage Controlled Crystal Oscillator

VCTCXO Voltage Controlled Temperature Compensated Crystal Oscillator.

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CCS Technical Documentation System Module and User Interface

Introduction

The system module RM9 consists of Radio Frequency (RF) and baseband (BB). User Interface (UI) contains display, keyboard, IR link, vibra, HF/HS connector and audio parts. Part of the keyboard is implemented in separate flip module, named TF9.

FM radio is located on the main PWB RM9. Headset is used as an antenna for FM radio.

The electrical part of the T9 and half of qwerty keyboard is located inside Flip. TF9 is connected to radio PWB through four 2-pole poco connectors

NSB-9 has Pop-Port accessory interface. Both two and three wire type of chargers are supported. BLC-2 Li-ion battery with nominal capacity of 1000 mAh is used as main power source.

The Baseband blocks provide the MCU, DSP, external memory interface and digital control functions in the UPP ASIC. Power supply circuitry, charging, audio processing and RF control hard ware are in the UEM ASIC.

The purpose of the RF block is to receive and demodulate the radio frequency signal from the base station and to transmit a modulated RF signal to the base station.

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NSB-9

System Module and User Interface CCS Technical Documentation

System Module: Baseband

Baseband Module, technical summary

Main functionality of the NSB-9 baseband is implemented with two ASICs: UPP (Universal Phone Processor) and UEM (Universal Energy Management).

Figure 1: Baseband Block Diagram

RF interface

(GSM)

LCD

LED driver

VIBRA

Memories

128M FLASH

(incl. EEPROM)

8M SRAM

HALL sw.

SIM

Battery

BLC-2

VOUT

2.8V

Charger

Baseband is running from power rails 2.8V analog voltage and 1.8V I/O voltage. UPP core voltages can be lowered down to 1.0V, 1.3V and 1.5V. UEM includes 6 linear LDO (low drop-out) regulators for baseband and 7 regulators for RF. It also includes 4 current sources for biasing purposes and internal usage. UEM also includes SIM interface which has supports both 1.8V and 3V SIM cards.

UEMK UPP8M

Mo/St Amp

LM4855

jack

System connector

Tomahawk

KEYBOARD

1.8V

FM radio

ENGINE

FLIP

A real time clock function is integrated into the UEM which utilizes the same 32kHz clock supply as the sleep clock. A backup power supply is provided for the RTC which keeps the real time clock running when the main battery is removed. The backup power supply is a rechargeable surface mounted battery (capacitor type). The backup time with the battery is 30 minutes minimum.

The analog interface between the baseband and the RF section is handled by a UEM ASIC. UEM provides A/D and D/A conversion of the in-phase and quadrature receive and transmit signal paths and also A/D and D/A conversions of received and transmitted

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CCS Technical Documentation System Module and User Interface

audio signals to and from the user interface. The UEM supplies the analog TXC and AFC signals to RF section according to the UPP DSP digital control. Data transmission between the UEM and the UPP is implemented using two serial busses, DBUS for DSP and CBUS for MCU. RF ASIC, Hagar, is controlled through UPP RFBUS serial interface. There is also separate signals for PDM coded audio. Digital speech processing is handled by the DSP inside UPP ASIC. UEM is a dual voltage circuit, the digital parts are running from the baseband supply 1.8V and the analog parts are running from the analog supply 2.78V also VBAT is directly used by flip, stereo amplifier, IR and some other blocks.

The baseband supports both internal and external microphone inputs and speaker outputs. UEM also includes third microphone input which is used in NSB-9 for FM radio with IHF use (Left channel). Input and output signal source selection and gain control is done by the UEM according to control messages from the UPP. Keypad tones, DTMF, and other audio tones are generated and encoded by the UPP and transmitted to the UEM for decoding. An external vibra alert control signal is generated by the UEM with separate PWM outputs.

NSB-9 has two external serial control interfaces: FBUS and MBUS. These busses can be accessed only through production test pattern.

EMC shielding for baseband is implemented using a metal shielding can. Although some components are outside the shielding can. On the other side the engine is shielded with PWB grounding. Heat generated by the circuitry will be conducted out via the PWB ground planes.

Full functionality according to the specifications needs to be met through ambient temperature range -10 °C to +55 °C. Storage temperature range -40 °C to +85 °C.

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NSB-9

System Module and User Interface CCS Technical Documentation

Baseband Technical Specifications

Absolute Maximum Ratings

Table 1: Absolute Maximum Ratings

Signal Note

Battery Voltage (Idle) -0.3V - 5.5V

Battery Voltage (Call) Max 4.8V

Charger Input Voltage -0.3V - 16V

Charging current 850mA

DC Characteristics

Regulators and Supply Voltage Ranges

Table 2: Battery Voltage Range

Signal Min Nom Max Note

VBAT 3.1V 3.6V 4.2V (charging high

3.2V SW cut off

limit voltage)

Table 3: Baseband Regulators

Signal Min Nom Max Note

VANA 2.70V 2.78V 2.86V I

VFLASH1 2.70V

2.61V (Sleep)

2.78V 2.86V

2.95V (Sleep)

VFLASH2 2.70V 2.78V 2.86V I

VSIM 1.745V

2.91V

1.8V

3.0V

1.855V

3.09V

VIO 1.72V 1.8V 1.88V I

VCORE 1.0V

1.235V

1.425V

1.710V

1.053V

1.3V

1.5V

1.8V

1.106V

1.365V

1.575V

1.890V

max

sleep

max

sleep

max

sleep

max

sleep

Default value 1.5V

= 80mA

= 70mA

= 1.5mA

= 40mA

= 25mA

= 0.5mA

= 150mA

= 0.5mA

= 200mA

= 0.2mA

Table 4: Accessory Regulator

Signal Min Nom Max Note

Vout 2.72V 2.80V 2.88V I

max

= 80mA

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CCS Technical Documentation System Module and User Interface

Table 5: RF Regulators

Signal Min Nom Max Note

VR1A 4.6V 4.75V 4.9V I

VR2 2.70V

2.61V (Sleep)

2.78V 2.86V

2.95V (Sleep)

VR3 2.70V 2.78V 2.86V I

VR4 2.70V 2.78V 2.86V I

VR5 2.70V 2.78V 2.86V I

VR6 2.70V 2.78V 2.86V I

VR7 2.70V 2.78V 2.86V I

max

sleep

max

sleep

max

sleep

max

= 10mA

= 100mA

= 20mA

= 50mA

= 0.1mA

= 50mA

= 0.1mA

= 50mA

= 0.1mA

= 45mA

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System Module and User Interface CCS Technical Documentation

Power Distribution diagram

Figure 2: Baseband Power Distribution Diagram

Baseband

UEM

RF Regulators

VLED+

LCD LED Driver

Battery CHACON

Flip

VBAT

Audio Amplifier

RTC

Accessory Regulator

Baseband Regulators

VR1A VR1B

VR2-7

VSIM

VCORE

VANA

VIO

VFLASH1

VFLASH2

SIM

UPP

FLASH

LCD

Backup

battery

FM Radio

PA Supply

Vout

Bottom Connector

VBAT

IRDA

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CCS Technical Documentation System Module and User Interface

Baseband External and Internal Signals and Connections

This section describes the external and internal electrical connection and interface levels on the baseband. Electrical interface specifications are collected into tables that covers a connector or a defined interface.

Internal Signals and Connections

Table 6: FM Radio Interface

BB Signal

VFLASH2 VCC 2.7V 2.78 V 2.86V Analog supply voltage

GenIO(3) FMClk 1.4V

GenIO(8) FMWrEn 1.4V

GenIO(11) FMCtrlClk 1.4V

FM Radio Signal

VDIG 2.7V 2.78V 2.86V Digital supply voltage

Min Nom Max Condition Note

6.0mA 8.4mA 10.5mA Operational

3uA 6uA Stand by

2.1mA 3.0mA 3.9mA Operational

11 uA 19uA 26uA Stand by

(bus enable LOW)

1.8V 1.88V

0.4V

32kHz Frequency

1.8V 1.88V

0.4V

1.8V 1.88V

0.4V

High Low

Reference clock for FM radio module Also 6.5MHz or 13MHz can be used

Write Enable

max. 1MHz

GenIO(12) FMCtrlDa 1.4V

FMANT f

FM_RADIO R VAFR 720mV 850mV 940mV fRF=98MHz,

FM_RADIO L VAFL 720mV 850mV 940mV fRF=98MHz,

FM(ant)

76MHz 108MHz FM input frequency.

1.8V 1.88V

0.4V

High Low

=1mV

Bidirectional

Headset used as an antenna.

FM-radio output signal (right) to amplifier input

FM-radio output signal (left) to amplifier input

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System Module and User Interface CCS Technical Documentation

Table 7: AC and DC Characteristics of RF-Baseband Voltage Supplies

Signal name

VBAT Battery PA, UEM,

VR1A UEM VCP Voltage 4.6 4.75 4.9 V Supply for varactor for

VR2 UEM VRF_TX Voltage 2.70 2.78 2.86 V Supply for part of

VR3 UEM VCTCXO Voltage 2.70 2.78 2.86 V Supply for VCTCXO

From To Parameter Min Typ Max Unit Function

Voltage 2.95 3.6 4.2 V Battery supply. STEREO AMPLIFIER, FLIP

Current 3 A

Current drawn

by PA when

”off”

Current 2 10 mA

Current 65 100 mA

Current 1 20 mA

0.8 2 uA

UHF VCO tuning.

transmit strip. Supply for TX I/Q-modulators.

VR4 UEM VRF_RX Voltage 2.70 2.78 2.86 V Supply for Hagar RX;

preamp., mixer,DTOS Noise density decades 20dB/dec from 6Hz to 600Hz. From f >600Hz maximum noise density 55nV

Current 50 mA

VR5 UEM VDIG,

VPRE, VLO

VR6 UEM VBB Voltage 2.70 2.78 2.86 V Supply for Hagar BB

VR7 UEM UHF VCO Voltage 2.70 2.78 2.86 V Supply for UHF VCO

Voltage 2.70 2.78 2.86 V Supply for Hagar PLL;

dividers, LO-buffers, prescaler.

Current 50 mA

and LNA

Current 50 mA

Current 30 mA

RMS

/ÖHz.

Page 14 Nokia Corporation Issue 1 04/03

+ 30 hidden pages

Nokia 6820a Service Manual 03 nsb 9 sysmod

Table of Contents

Glossary of terms

Introduction

System Module: Baseband

Baseband Module, technical summary

Baseband Technical Specifications

Absolute Maximum Ratings

DC Characteristics

Power Distribution diagram

Baseband External and Internal Signals and Connections

Internal Signals and Connections