Nokia NSB-7 Service Manual
Programmes After Market Services
Technical Documentation
[NMP Part No.0275454]
NSB-7 Cellular Phones
Issue 1 06/00
Copyrightã 2000 Nokia Mobile Phones. All Rights Reserved
Programmes After Market Services
Technical Documentation
Amendment Record Sheet
Amendment No Date Inserted By Comments
Issue 1 06/00
Copyrightã 2000 Nokia Mobile Phones. All Rights Reserved
Programmes After Market Services
Contents:
Technical Documentation
NSB-7 Overall Manual Contents
Section 1: Foreword
Section 2: General Information
Section 3: System Module
Section 4: UI Module
Section 5: Product Variants
Section 6: Service Software Instructions
Section 7: Service Tools
Section 8: Disassembly/Troubleshooting Instructions
Section 9: Non-serviceable Accessories
Section 10: Schematic Diagrams
Issue 1 06/00
Copyrightã 2000 Nokia Mobile Phones. All Rights Reserved
Programmes After Market Services
This document is intended for use by qualified service personnel only.
Company Policy
Our policy is of continuous development; details of all technical modifications will be
included with service bulletins.
While every endeavour has been made to ensure the accuracy of this document, some
errors may exist. If any errors are found by the reader, NOKIA MOBILE PHONES Ltd.
should be notified in writing.
Please state:
Technical Documentation
IMPORTANT
Title of the Document + Issue Number/Date of publication
Latest Amendment Number (if applicable)
Page(s) and/or Figure(s) in error
Please send to: Nokia Mobile Phones Ltd.
PAMS Technical Documentation
PO Box 86
FIN-24101 SALO
Finland
Issue 1 06/00
Copyrightã 2000 Nokia Mobile Phones. All Rights Reserved
Programmes After Market Services
Technical Documentation
Warnings and Cautions
Please refer to the phone's user guide for instructions relating to operation, care and
maintenance including important safety information. Note also the following:
Warnings:
1. CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED WITH ELECTRONIC ENGINE MANAGEMENT SYSTEMS AND ANTI-SKID BRAKING SYSTEMS. UNDER CERTAIN FAULT CONDITIONS, EMITTED RF ENERGY CAN
AFFECT THEIR OPERATION. IF NECESSARY, CONSULT THE VEHICLE DEALER/
MANUFACTURER TO DETERMINE THE IMMUNITY OF VEHICLE ELECTRONIC
SYSTEMS TO RF ENERGY.
2. THE HANDPORTABLE TELEPHONE MUST NOT BE OPERATED IN AREAS LIKELY
TO CONTAIN POTENTIALLY EXPLOSIVE ATMOSPHERES EG PETROL STATIONS
(SERVICE STATIONS), BLASTING AREAS ETC.
3. OPERATION OF ANY RADIO TRANSMITTING EQUIPMENT, INCLUDING CELLU-
Cautions:
1. Servicing and alignment must be undertaken by qualified personnel only.
2. Ensure all work is carried out at an anti-static workstation and that an anti-
3. Ensure solder, wire, or foreign matter does not enter the telephone as dam-
4. Use only approved components as specified in the parts list.
5. Ensure all components, modules screws and insulators are correctly re-fit-
LAR TELEPHONES, MAY INTERFERE WITH THE FUNCTIONALITY OF INADEQUATELY PROTECTED MEDICAL DEVICES. CONSULT A PHYSICIAN OR THE
MANUFACTURER OF THE MEDICAL DEVICE IF YOU HAVE ANY QUESTIONS.
OTHER ELECTRONIC EQUIPMENT MAY ALSO BE SUBJECT TO INTERFERENCE.
static wrist strap is worn.
age may result.
ted after servicing and alignment. Ensure all cables and wires are repositioned correctly.
Issue 1 06/00
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Programmes After Market Services
Technical Documentation
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NSB-7 Series Transceivers
General Information
Issue 1 06/00 ãNokia Mobile Phones Ltd.
NSB-7
General Information PAMS Technical Documentation
Table of Contents
Page No
General Information................................................................................................................1
Product Selection..................................................................................................................................... 4
Hand portables ...................................................................................................................................... 4
Desktop Option ...................................................................................................................................... 5
Express Car Kit (CARK-124) Option for Americas ....................................................................... 6
Product and Module List ....................................................................................................................... 7
Technical Specifications ........................................................................................................................ 8
General Specifications of Transceiver NSB-7 ............................................................................... 8
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PAMS Technical Documentation General Information
List of Figures
Page No
Fig 1 Hand portables..................................................................................................................................... 4
Fig 2 Desktop option ..................................................................................................................................... 5
Fig 3 Express Car Kit (CARK-124).............................................................................................................. 6
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NSB-7
General Information PAMS Technical Documentation
Product Selection
Hand portables
The NSB-7 is a single band hand portable mobile telephone for the GSM1900 networks
7.
3.
ACP-7E
ACP-8E
ACP-8K
4.
4.
ACP-7C
ACP-7U
ACP-8X
8.
ACP-8U
ACP-8C
9.
ACP-8A
10.
5.
ACP-7H
ACP-7X
6.
ACP-7A
1.
2.
2.
3.
Figure 1: Hand portables
Item Name: Type Code: Material Code:
1. Transceiver See Product Variants
2. Standard Battery (Li-ion 650 mAh) BLB-2 0670246
Standard Battery (Li-ion 650 mAh) for Americas BLB-2 0670322
3. AC Travel Charger (Euro plug) 207-253 Vac ACP-7E 0675144
4. AC Travel Charger (US plug) 108-132 Vac ACP-7U 0675143
AC Travel Charger (US plug) 198-242 Vac ACP-7C 0675158
5. AC Travel Charger (UK plug) 207-253 Vac ACP-7X 0675145
AC Travel Charger (UK plug) 180-220 Vac ACP-7H 0675146
6. AC Travel Charger (Australia plug) 216-264 Vac ACP-7A 0675148
7. Performance Travel Charger Euro plug 90-264 Vac ACP-8E 0675195
Performance Travel Charger Korea plug 90-264 Vac ACP-8K 0675199
8. Performance Travel Charger UK plug 90-264 Vac ACP-8X 0675197
9. Performance Travel Charger US plug 90-264 Vac ACP-8U 0675196
Performance Travel Charger China plug 90-264 Vac ACP-8C 0675211
10. Performance Travel Charger Australia plug 90-264 Vac ACP-8A 0675214
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NSB-7
PAMS Technical Documentation General Information
Desktop Option
The desktop option allows the user to charge the phone from the mains.
1.
3.
ACP-7E
2.
ACP-8E
ACP-8K
7.
ACP-8X
8.
ACP-8U
ACP-8C
9.
ACP-8A
10.
4.
ACP-7C
ACP-7U
5.
ACP-7H
ACP-7X
6.
ACP-7A
Figure 2: Desktop option
Item Name: Type Code: Material Code:
1. Transceiver See Product Variants
2 Desk stand DCV-1B 0675220
3. AC Travel Charger (Euro plug) 207-253 Vac ACP-7E 0675144
4. AC Travel Charger (US plug) 108-132 Vac ACP-7U 0675143
AC Travel Charger (US plug) 198-242 Vac ACP-7C 0675158
5. AC Travel Charger (UK plug) 207-253 Vac ACP-7X 0675145
AC Travel Charger (UK plug) 180-220 Vac ACP-7H 0675146
6. AC Travel Charger (Australia plug) 216-264 Vac ACP-7A 0675148
7. Performance Travel Charger Euro plug 90-264 Vac ACP-8E 0675195
Performance Travel Charger Korea plug 90-264 Vac ACP-8K 0675199
8. Performance Travel Charger UK plug 90-264 Vac ACP-8X 0675197
9. Performance Travel Charger US plug 90-264 Vac ACP-8U 0675196
Performance Travel Charger China plug 90-264 Vac ACP-8C 0675211
10. Performance Travel Charger Australia plug 90-264 Vac ACP-8A 0675214
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General Information PAMS Technical Documentation
Express Car Kit (CARK-124) Option for Americas
5.
3.
1.
2.
4.
Figure 3: Express Car Kit (CARK-124)
Item Name: Type Code: Material Code:
Express Car Kit for Americas (Retail Pack) CARK-124 0080372
1. Transceiver (Not included, see Product Variants)
2. Pocket Clip SKB-2 0720218
3. Swivel Mount HHS-12 0620054
4. Hands Free Microphone HFM-8 0690016
5. Hands Free Cigarette Lighter Charger PPH-1 0675182
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PAMS Technical Documentation General Information
Product and Module List
Unit/Type: Product Code:
Transceiver NSB-7 See Product Variants
Standard Battery BLB-2 (Li-ion 650 mAh) 0670246
Standard Battery BLB-2 (Li-ion 650 mAh) for Americas 0670322
AC Travel Charger ACP-7E (EURO) 207-253 Vac 0675144
AC Travel Charger ACP-7U (US) 108-132 Vac 0675143
AC Travel Charger ACP-7C (US) 198-242 Vac 0675158
AC Travel Charger ACP-7X (UK) 207-253 Vac 0675145
AC Travel Charger ACP-7H (UK) 180-220 Vac 0675146
AC Travel Charger ACP-7A (AUS) 216-264 Vac 0675148
Performance Travel Charger ACP-8E (EURO) 90-264 Vac 0675195
Performance Travel Charger ACP-8K (KOREA) 90-264 Vac 0675199
Performance Travel Charger ACP-8X (UK) 90-264 Vac 0675197
Performance Travel Charger ACP-8U (US) 90-264 Vac 0675196
Performance Travel Charger ACP-8C (CHINA) 90-264 Vac 0675211
Performance Travel Charger ACP-8A (AUS) 90-264 Vac 0675214
Headset HDC-5 0694059
Loopset LPS-3 0630244
Pocket Clip SKB-2 0720218
Desk Stand DCV-1B 0675220
Swivel Mount HHS-12 0620054
HF Microphone HFM-8 0690016
Plug & Play HF Cigarette Lighter Charger PPH-1 0675182
Cigarette Lighter Charger LCH-8 0675231
Cigarette Lighter Charger LCH-9 0675120
Carrying Case CBK-3V 0272237
Carrying Case CBK-3H 0272236
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NSB-7
General Information PAMS Technical Documentation
Technical Specifications
General Specifications of Transceiver NSB-7
Parameter Unit
Cellular System GSM1900
RX frequency band 1930 ...1990 MHz
TX frequency band 1850 ...1910 MHz
Output power +0 ...+29 dBm / 1.0 mW ...1 W
Duplex spacing 80 MHz
Number of RF channels 299
Channel spacing 200 kHz
Number of TX power levels 16
Sensitivity, static channel -102 dBm
Frequency error, static channel < 0.1 ppm
RMS phase error < 5.0 ο
Peak phase error < 20.0 ο
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Programmes After Market Services
NSB-7 Series Transceivers
System Module
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NSB-7
System Module PAMS Technical Documentation
Table of Contents
Page No
System Module ........................................................................................................................1
Transceiver NSB-7 ................................................................................................................................... 6
Introduction ........................................................................................................................................... 6
Operational Modes ............................................................................................................................ 6
Interconnection Diagram ................................................................................................................... 7
System Module......................................................................................................................................... 8
Baseband Module ................................................................................................................................. 8
Block Diagram..................................................................................................................................... 8
Technical Summary ........................................................................................................................... 9
Technical Specifications ...................................................................................................................10
Absolute Maximum Ratings ........................................................................................................ 10
DC Characteristics .......................................................................................................................... 10
External and Internal Signals and Connections..................................................................... 10
DC (charger) connector ...............................................................................................................10
Service Connector .........................................................................................................................11
Battery connector .........................................................................................................................11
SIM card connector ......................................................................................................................12
RTC backup battery ......................................................................................................................12
Functional Description ......................................................................................................................13
Power Distribution.......................................................................................................................... 13
Battery Interface............................................................................................................................. 13
Battery charging ...........................................................................................................................14
Startup Charging ..........................................................................................................................14
Battery Overvoltage Protection ................................................................................................15
Battery Removal During Charging ...........................................................................................16
PWM .................................................................................................................................................16
Battery Identification ..................................................................................................................16
Battery Temperature ....................................................................................................................18
Supply Voltage Regulators .........................................................................................................19
Switched Mode Supply VSIM ....................................................................................................21
Power Up and Power Down ......................................................................................................... 22
Power up with charger ................................................................................................................22
Power Up with the Power Switch (PWRONX) ......................................................................23
Power Up by RTC ...........................................................................................................................24
Power Up by IBI .............................................................................................................................24
Power Down ...................................................................................................................................24
Modes of Operation ....................................................................................................................... 25
Acting Dead ....................................................................................................................................25
Active Mode ...................................................................................................................................25
Sleep Mode .....................................................................................................................................25
Charging ..........................................................................................................................................26
Watchdog .......................................................................................................................................26
Audio Control................................................................................................................................... 27
PCM serial interface ....................................................................................................................27
Digital Control ................................................................................................................................. 28
MAD2 WD1 .....................................................................................................................................28
Memories........................................................................................................................................... 37
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MAD memory configuration ......................................................................................................37
Memory ...........................................................................................................................................37
Program and Data Memory .......................................................................................................37
Work Memory ................................................................................................................................37
MCU Memory Requirements .....................................................................................................37
MCU Memory Map .......................................................................................................................37
Flash Programming ......................................................................................................................38
COBBA GJP .....................................................................................................................................39
Real time clock ..............................................................................................................................40
RTC backup battery charging ....................................................................................................40
Security ............................................................................................................................................40
Baseband EMC Strategy .............................................................................................................40
Baseband Testing ..........................................................................................................................41
Alignments .....................................................................................................................................41
Baseband Startup for Testing ....................................................................................................42
RF Module............................................................................................................................................... 43
Shielding............................................................................................................................................ 43
Environmental Specifications .........................................................................................................43
Normal and Extreme voltages ...................................................................................................43
Temperature Conditions .............................................................................................................43
Humidity ..........................................................................................................................................43
Vibration ..........................................................................................................................................44
ESD Strength ..................................................................................................................................44
Main Technical Specifications ........................................................................................................44
Maximum Ratings .......................................................................................................................... 44
RF Frequency Plan ..............................................................................................................................45
DC Characteristics ..............................................................................................................................45
Regulators......................................................................................................................................... 45
Control Signals ................................................................................................................................ 46
Power Distribution Diagram ............................................................................................................47
RF Characteristics ...............................................................................................................................48
GSM1900 (PCS1900) ..................................................................................................................... 48
Transmitter Characteristics.......................................................................................................... 48
Output Power Requirements ....................................................................................................... 48
Output RF Spectrum due to modulation.................................................................................. 49
Spectrum due to switching transients...................................................................................... 49
Spurious Emissions (when allocated a channel).................................................................... 49
Spurious Emissions (idle mode) .................................................................................................. 50
Frequency Error and Phase Accuracy ........................................................................................ 50
Receiver Characteristics ...................................................................................................................50
Blocking Requirements ................................................................................................................. 51
AM Suppression Requirements ................................................................................................... 51
Sensitivity, Inter modulation, Spurious Rejection and Emissions..................................... 52
Reference Interference level........................................................................................................ 52
RF Block Diagram ...............................................................................................................................53
Frequency synthesizer .......................................................................................................................54
Receiver .................................................................................................................................................55
Transmitter ...........................................................................................................................................56
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System Module PAMS Technical Documentation
AGC strategy ........................................................................................................................................57
AFC function ........................................................................................................................................57
DC Compensation ...............................................................................................................................58
Parts List of RB9 (EDMS Issue 5.3) (Code: 0201512)................................................................ 59
Schematic Diagrams: RB9 (at the back of the binder)
Circuit Diagram of Power Supply (Version 05.21 Edit 64) for layout 5 ............................... A-1
Circuit Diagram of CPU Block (Version 05.21 Edit 45) for layout 5 ..................................... A-2
Connection between RF and Baseband modules (Version 05.21 Edit 37) for layout 5... A-3
Baseband Block Interconnections (Version 05.21 Edit 40) for layout 5 .............................. A-4
Circuit Diagram of MAD Block (Version 05.21 Edit 27) for layout 5 .................................... A-5
Circuit Diagram of RF Block (Version 05.21 Edit 132) for layout 5 ...................................... A-6
Circuit Diagram of UIF (Version 05.21 Edit 36) for layout 5................................................... A-7
Circuit Diagram of Audio and RFI (Version 05.21 Edit 72) for layout 5 .............................. A-8
Circuit Diagram of IR Module (Version 05.21 Edit 23) for layout 5 ..................................... A-9
Layout Diagram of RB9 -Top (Version 05.21)............................................................................A-10
Layout Diagram of RB9 - Bottom (Version 05.21)................................................................... A-10
Testpoints of RB9 - Top (Version 05.21) .....................................................................................A-11
Testpoints of RB9 - Bottom (Version 05.21)..............................................................................A-12
RF Testpoints for RB9 - Circuit Diagram (Version 05.21 Edit132 ) .....................................A-13
RF Testpoints of RB9 - Layout (Version 05.21) .........................................................................A-14
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List of Figures
Page No
Fig 1 Block Diagram ...................................................................................................................................... 8
Fig 2 Block Diagram of Power Distribution ............................................................................................ 13
Fig 3 Charging Block Diagram.................................................................................................................... 14
Fig 4 Output Overvoltage Protection (in principle; not in time scale) ........................................... 15
Fig 5 Output Overvoltage Protection When Battery Removed (in principle)................................ 16
Fig 6 BSI connections for all battery types ............................................................................................ 17
Fig 7 SIMCardDetX Detection Levels........................................................................................................ 18
Fig 8 Standard Battery BTEMP connection ............................................................................................ 19
Fig 9 Principle of the SMR Power Functions.......................................................................................... 22
Fig 10 Power Up With Charger .................................................................................................................. 23
Fig 11 Power Up With Switch .................................................................................................................... 24
Fig 12 Flash Programming Sequence ....................................................................................................... 39
Fig 13 RF Frequency Plan............................................................................................................................. 45
Fig 14 Power Distribution Diagram .......................................................................................................... 47
Fig 15 RF Block Diagram.............................................................................................................................. 53
Fig 16 Phase Locked Loop............................................................................................................................ 55
Fig 17 Power Control Loop Diagram......................................................................................................... 57
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NSB-7
System Module PAMS Technical Documentation
Transceiver NSB-7
Introduction
The NSB-7 is a single band transceiver unit designed for the GSM1900 networks. It is
GSM1900 power class 1 (1W) transceiver.
The transceiver consists of System/RF module (RB9), Display module (UX7) and assembly
parts.
The transceiver has a full graphic display and the user interface is based on a jack style
UI with two soft keys.
A back mounted antenna is used, there is no connection to an external antenna.
The transceiver has a low leakage tolerant earpiece and an omnidirectional microphone,
providing excellent audio quality. The transceiver supports full rate, an enhanced full rate
and a half rate speech decoding.
An integrated IR link provides a connection between two NSB-7 transceivers or a transceiver and a PC (internal data), or a transceiver and a printer.
The small SIM (Subscriber Identity Module) card is located under the back cover of the
phone.
Operational Modes
There are five different operational modes:
• power off mode
•idle mode
• active mode
• charge mode
• local mode
In the power off mode only the circuits needed for power up are supplied.
In the idle mode circuits are powered down and only the sleep clock is running.
In the active mode all the circuits are supplied with power although some parts might be
in idle state part of the time.
The charge mode is effective in parallel with all previous modes. The charge mode itself
consists of two different states, i.e. the fast charge and the maintenance mode.
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The local mode is used for alignment and testing.
Interconnection Diagram
Keyboard LCD module
14 9
SIM
Antenna
Microphone IR Link Earpiece HF/HS
6
4
Battery
Radio
Module
2
RB9
2+2
Charger
2824
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NSB-7
System Module PAMS Technical Documentation
System Module
Baseband Module
The ASICs are in the uBGA package. Flash and SRAM chips are inside the same package.
EEPROM is software emulated with Flash. These changes have decreased the number of
I/O between the ICs. Smaller I/O count has made using smaller packages possible
The baseband architecture supports a power saving function called ”sleep mode”. This
sleep mode shuts off the VCTCXO, which is used as system clock source for both RF and
baseband. During the sleep mode the system runs from a 32 kHz crystal. The phone is
waken up by a timer running from this 32 kHz clock supply. The sleeping time is determined by some network parameters. The sleep mode is entered when both the MCU and
the DSP are in stand-by mode and the normal VCTCXO clock has been switched off.
The battery charging is controlled by a PWM signal from the CCONT. The PWM duty cycle
is determined by a charging software and is fed to the CHAPS charging switch.
Two types of chargers can be connected to the phone. Standard chargers (two wires)
provide a coarse supply power, which is switched by the CHAPS for suitable charging
voltage and current. Advanced chargers (three wires) are equipped with a control input.
Three wire chargers are treated like two wire ones.
Block Diagram
TX/RX SIGNALS
COBBA SUPPLY
COBBA
UI
MAD
IR
+
MEMORIES
RF SUPPLIES
CCONT
BB SUPPLY
CHAPS
PA SUPPLY
SLEEP CLOCK
32kHz
CLK
VBAT
SIM
13MHz
CLK
SYSTEM CLOCK
BATTERY
BASEBAND
EXT. AUDIO
HS-connector
Charger
connector
Figure 1: Block Diagram
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PAMS Technical Documentation System Module
Technical Summary
The baseband module consists of four ASICs; CHAPS, CCONT, COBBA-GJP and
MAD2WD1, which take care of the baseband functions of the engine.
The baseband is running from a 2.8V power rail, which is supplied by a power controlling
ASIC CCONT. MAD2WD1 supply voltages are VBB and VCORE (V2V), VBB feed I/O pins so
that MAD2WD1 is externally fully compatible with old versions. VCORE feed MAD2WD1
internal functions supply voltage; CPU, DSP and system logic. In the CCONT there are 6
individually controlled regulator outputs for RF-section and two outputs for the baseband. In addition there is one +5V power supply output (V5V). The CCONT contains also a
SIM interface, which supports both 3V and 5V SIM-cards. A real time clock function is
integrated into the CCONT, 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 rechargable
battery. The backup time with the battery is ten minutes minimum.
The analog interface between the baseband and the RF section is handled by a COBBA
ASIC. COBBA 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
audio signals to and from the user interface. The COBBA supplies the analog TXC and AFC
signals to RF section according to the MAD DSP digital control. Data transmission
between the COBBA and the MAD is implemented using serial bus for high speed signalling and for PCM coded audio signals. Digital speech processing is handled by the MAD
ASIC. COBBA is a dual voltage circuit, the digital parts are running from the baseband
supply VBB and the analog parts are running from the analog supply VCOBBA.
The baseband supports both internal and external microphone inputs and speaker outputs. Input and output signal source selection and gain control is done by the COBBA
according to control messages from the MAD. Keypad tones, DTMF and other audio tones
are generated and encoded by the MAD and transmitted to the COBBA for decoding. A
buzzer and an external vibra alert control signals are generated by the MAD with separate PWM outputs.
EMC shielding is implemented using a metallized plastic frame. On the other side the
engine is shielded with PCB grounding. Heat generated by the circuitry will be conducted
out via the PCB ground planes.
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System Module PAMS Technical Documentation
Technical Specifications
Absolute Maximum Ratings
Parameter Rating
Battery voltage -0.3... 5.3 V
Charger input voltage -5.0... 16V
DC Characteristics
Line Symbol Minimum
Supply battery voltage 3.0 3.9 4.8 V
Battery powerup voltage (HW) 2.9 3.0 3.1 V
Battery cut off voltage (HW) 2.7 2.8 2.9 V (3.1 V SW cutoff)
Regulated baseband supply voltage
Regulated baseband supply current
COBBA analog supply voltage 2.7 2.8 2.85 V
COBBA analog supply current 5 20 100 mA
Regulated 5V supply voltage 4.8 5.0 5.2 V
Regulated 5V supply current 0 1 30 mA
Regulated 5V SIM supply voltage 4.8 5.0 5.2 V
Regulated 5V SIM supply current 3 10 30 mA
Regulated 3V SIM supply voltage 2.8 3.0 3.2 V
2.7 2.8 2.85 V
3 50 125 mA
Typical /
Nominal
Maximum Unit / Notes
Regulated 3V SIM supply current 1 6 30 mA
Voltage reference 1.4775 1.5 1.5225 V
External and Internal Signals and Connections
This section describes the external electrical connection and interface levels on the baseband. The electrical interface specifications are collected into tables that covers a connector or a defined interface.
DC (charger) connector
DC (charger) connector is physically integrated in the same component with the acces-
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PAMS Technical Documentation System Module
sory interface connector. DC connector has both jack and contact pads for desk stand.
Name Min Typ Max Unit Notes
VIN 0 12 V
0850mA
L_GND 0 0.3 V
Service Connector
Name Parameter Min Typ Max Unit Remark
MBUS Serial clock from
the Prommer
FBUS_RX Serial data from the
Prommer
FBUS_TX Data acknowledge
to the Prommer
GND GND 0 0 V Ground
0
2.0
0
2.0
0
2.0
logic low
logic low
logic low
logic high
logic low
logic high
0.8
2.85
0.8
2.85
0.5
2.85
V Prommer detection and Serial
Clock for synchronous communication
V Receive Data from Prommer to
Baseband
V Transmit Data from Baseband to
Prommer
The service connector is used as a flash programming interface for updating (i.e. re-programming) the flash program memory and an electrical access for services to the engine.
When the flash prommer is connected to the phone supply power is provided through the
battery contacts and the phone is powered up with a pulse given to the BTEMP line.
Battery connector
The BSI contact on the battery connector is used to detect when the battery is to be
removed to be able to shut down the operations of the SIM card before the power is lost
if the battery is removed with power on. The BSI contact disconnects earlier than the
supply power contacts to give enough time for the SIM and LCD shut down.
Name Min Typ Max Unit Notes
VBATT 3.0 3.9 4.2 V Battery voltage
BSI 0 2.85 V Battery size indication
Phone has 100kohm pull-up resistor.
SIM Card removal detection
(Threshold is 2.4V@VBB=2.8V)
68 kohm Battery indication resistor (BLB-2)
kohm Battery indication resistor (service battery)
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System Module PAMS Technical Documentation
Name Min Typ Max Unit Notes
BTEMP 0 1.4 V Battery temperature indication
Phone has a 100k (+/-5%) pull-up resistor,
Battery package has a NTC pull-down
resistor: 47k +/-5%@+25C, B=4050 +/3%
2.1
510330
0 1 kohm Local mode initialization (in production)
BGND 0 0 V Battery ground
V
ms
Phone power up by battery (input)
Power up pulse width
SIM card connector
The SIM card connector is located on the engine beside the battery pack.
Pin Name Parameter Min Typ Max Unit Notes
4GND GND 0 0 V Ground
3, 5 VSIM 5V SIM Card
3V SIM Card
6 DATA 5V Vin/Vout
3V Vin/Vout
2 SIMRST 5V SIM Card
3V SIM Card
4.8
2.8
4.0
0
2.8
0
4.0
2.8
5.0
3.0
“1”
“0”
“1”
“0”
“1”
“1”
5.2
3.2
VSIM
0.5
VSIM
0.5
VSIM
VSIM
V Supply voltage
VSIM data
Trise/Tfall max 1us
VSIM reset
1SIMCLKFrequency
Trise/Tfall
3.25
25
MHz
ns
SIM clock
RTC backup battery
The RTC block in CCONT needs a power backup to keep the clock running when the
phone battery is disconnected. The backup power is supplied from a rechargable Li-ion
battery that can keep the clock running ten minutes minimum. The backup battery is
charged from the main battery through CHAPS.
Signal Parameter Min Typ Max Unit Notes
VBACK Backup battery charging
from CHAPS
Backup battery charging
from CHAPS
VBACK Backup battery supply to
CCONT
3.02 3.15 3.28 V
100 200 500 uA Vout@VBAT-0.2V
23.28V
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PAMS Technical Documentation System Module
Signal Parameter Min Typ Max Unit Notes
Backup battery supply to
CCONT
Functional Description
Power Distribution
In normal operation the baseband is powered from the phone‘s battery. The battery consists of one Lithium-Ion cell. An external charger can be used for recharging the battery
and supplying power to the phone.
The baseband contains parts that control power distribution to whole phone excluding
those parts that use continuous battery supply. The battery feeds power directly to the
CCONT and UI (buzzer and display and keyboard lights).
The power management circuit CHAPS provides protection against over voltages, charger
failures and pirate chargers etc. that would otherwise cause damage to the phone.
RF
UI
(LCD,
backlights,
buzzer)
80 uA
RF supply voltages
VCobba
Vbb
Battery connector
VB
CCONTCOBBA GJP
Baseband
MAD2 +
MEMORY
CHRG_CTRL
VCORE
CHAPS
RTC backup
VChar
Charger & headset connector
Vbatt
Figure 2: Block Diagram of Power Distribution
Battery Interface
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System Module PAMS Technical Documentation
Battery charging
The electrical specifications give the idle voltages produced by the acceptable chargers
at the DC connector input. The absolute maximum input voltage is 30V due to the transient suppressor that is protecting the charger input. At phone end there is no difference
between a plug-in charger or a desktop charger. The DC-jack pins and bottom connector
charging pads are connected together inside the phone.
MAD
MAD
VBAT
CCONTINT
CCONT
0R22
GND
ICHAR
PWM_OUT
VCHAR
LIM
VOUT
CHAPS
RSENSE
PWM
VCH
GND
22k
TRANSCEIVER
1u
100k
1n
10k
Figure 3: Charging Block Diagram
30V
CHARGER
2A
VIN
L_GND
Startup Charging
When a charger is connected, the CHAPS is supplying a startup current minimum of
130mA to the phone. The startup current provides initial charging to a phone with an
empty battery. Startup circuit charges the battery until the battery voltage level is
reaches 3.0V (+/- 0.1V) and the CCONT releases the PURX reset signal and program execution starts. Charging mode is changed from startup charging to PWM charging that is
controlled by the MCU software. If the battery voltage reaches 3.55V (3.75V maximum)
before the program has taken control over the charging, the startup current is switched
off. For accessory detection, startup current is possible cut via CCUT line. The startup
current is switched on again when the battery voltage is sunken 100mV (nominal).
Parameter Symbol Min Typ Max Unit
VOUT Start-up mode cutoff limit Vstart 3.45 3.55 3.75 V
VOUT Start-up mode hysteresis
NOTE: Cout=4.7 uF
Start-up regulator output current
VOUT=0V....Vstart
Vstarthys 80 100 200 mV
Istart 130 165 200 mA
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PAMS Technical Documentation System Module
Battery Overvoltage Protection
Output overvoltage protection is used to protect phone from damage. This function is
also used to define the protection cutoff voltage for the Lithium-Ion battery. The power
switch is immediately turned OFF if the voltage in VOUT rises above the selected limit
VLIM.
Parameter Symbol LIM input Min Typ Max Unit
Output voltage cutoff limit (during transmission or Li-battery)
VLIM LOW 4.4 4.6 4.8 V
The voltage limit (VLIM1 or VLIM2) is selected by logic LOW or logic HIGH on the CHAPS
(N101) VLIM input pin.
When the switch in output overvoltage situation has once turned OFF, it stays OFF until
the battery voltage falls below VLIM and PWM = LOW is detected. The switch can be
turned on again by setting PWM = HIGH.
VCH
VCH<VOUT
t
VOUT
VLIM
SWITCH
PWM (32Hz)
t
ON OFF
Figure 4: Output Overvoltage Protection (in principle; not in time scale)
ON
Issue 1 06/00 ãNokia Mobile Phones Ltd. Page 15
NSB-7
"1"
3
4
5
6
7
System Module PAMS Technical Documentation
Battery Removal During Charging
Output overvoltage protection is also needed in case the main battery is removed when
charger connected or charger is connected before the battery is connected to the phone.
With a charger connected, if VOUT exceeds VLIM, CHAPS turns switch OFF until the
charger input has sunken below Vpor (nominal 3.0V, maximum 3.4V). MCU software will
stop the charging (turn off PWM) when it detects that battery has been removed. The
CHAPS remains in protection state as long as PWM stays HIGH after the output overvoltage situation has occured.
VCH
(Standard
Charger)
VOUT
PWM
SWITCH
Vpor
Droop depends on load
VLIM
4V
Vstart
0
ON
OFF
1
Battery removed, (standard) charger connected, VOUT rises (follows charger voltage)
2. VOUT exceedslimit VLIM(X),switch is turned immediatelyOFF
3
VOUT falls (because no battery) , also VCH<Vpor (standard chargers full-rectified
output).WhenVCH>VporandVOUT<VLIM(X)->switchturnedonagain(alsoPWM
is still HIGH) a nd VOUT again exceeds VLIM(X).
4. Software sets PWM = LOW -> CHAPS does n ot enter PWM mode
5. PWM low -> Startup mode, startup current flows until Vstart limit reached
6. VOUT exceeds limit Vstart, Istart is turned off
7. VCH falls below Vpor
2
1
& C in phone
Istart off due to VCH<Vpor
Vstarthys
t
t
t
Figure 5: Output Overvoltage Protection When Battery Removed (in principle; not in time scale)
PWM
When a charger is used, the power switch is turned ON and OFF by the PWM input. PWM
rate is 1Hz. When PWM is HIGH, the switch is ON and the output current Iout = charger
current - CHAPS supply current. When PWM is LOW, the switch is OFF and the output
current Iout = 0. To prevent the switching transients inducing noise in audio circuitry of
the phone soft switching is used.
Battery Identification
Different battery types are identified by a pulldown resistor inside the battery pack. The
BSI line inside transceiver has a 100k pull-up to VBB. The MCU can identify the battery
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