Service Manuals, User Guides, Schematic Diagrams or docs for : NOKIA Mobile Phone 6820a 03-nsb-9-sysmod
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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
Table of Contents
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
Page 2 Nokia Corporation Issue 1 04/03
NSB-9
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
Issue 1 04/03 Nokia Corporation Page 3
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
Page 4 Nokia Corporation Issue 1 04/03
NSB-9
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
Issue 1 04/03 Nokia Corporation Page 5
NSB-9
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.
Page 6 Nokia Corporation Issue 1 04/03
NSB-9
CCS Technical Documentation System Module and User Interface
Introduction
The system module RM9 consists of Radio Frequency (RF) and baseband (BB). User Inter-
face (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 con-
nected 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 con-
trol 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.
Issue 1 04/03 Nokia Corporation Page 7
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 (Univer-
sal Phone Processor) and UEM (Universal Energy Management).
Figure 1: Baseband Block Diagram
RF interface
(GSM)
LCD IR
Memories
128M FLASH
LED driver (incl. EEPROM)
VIBRA 8M SRAM
HALL sw. UEMK UPP8M ENGINE
KEYBOARD
SIM FLIP
KEYBOARD
Battery 1.8V uC
BLC-2
L
Mo/St Amp FM radio
VOUT LM4855 R
2.8V
DC System connector
Charger
jack Tomahawk
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.
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
Page 8 Nokia Corporation Issue 1 04/03
NSB-9
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 out-
puts. 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 tem-
perature range -10 ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo