Nokia 6150 Service Manual 03sys

PAMS Technical Documentation

NSM–1 Series Transceivers

System Module

Original 10/98

NSM–1

PAMS

System Module

Transceiver NSM–1 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mode Description 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Interconnection Diagram 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Module 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Circuit Description 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

External and Internal Connectors 3–8. . . . . . . . . . . . . . . . . . . . .

System Connector Contacts 3–9. . . . . . . . . . . . . . . . . . . . . . .

RF Connector Contacts 3–10. . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply Voltages and Power Consumtion 3–10. . . . . . . . . . . .

Power Distribution Diagram 3–11. . . . . . . . . . . . . . . . . . . . . . .

Baseband Module 3–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Block Diagram 3–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Summary 3–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bottom Connector External Contacts 3–14. . . . . . . . . . . . . . .

Bottom Connector Signals 3–14. . . . . . . . . . . . . . . . . . . . . . . .

Battery Connector 3–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SIM Card Connector 3–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Internal Microphone 3–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Infrared Module Connections 3–17. . . . . . . . . . . . . . . . . . . . . .

RTC Backup Battery 3–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Buzzer 3–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Baseband Power Distribution 3–19. . . . . . . . . . . . . . . . . . . . . . . .

Functional Description 3–19. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Battery charging 3–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Startup Charging 3–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Battery Overvoltage Protection 3–21. . . . . . . . . . . . . . . . . . . .

Battery Removal During Charging 3–22. . . . . . . . . . . . . . . . . .

Different PWM Frequencies ( 1Hz and 32 Hz) 3–23. . . . . . .

Battery Identification 3–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Battery Temperature 3–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply Voltage Regulators 3–25. . . . . . . . . . . . . . . . . . . . . . . .

Switched Mode Supply VSIM 3–27. . . . . . . . . . . . . . . . . . . . . .

Power Up 3–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power up with a charger 3–28. . . . . . . . . . . . . . . . . . . . . . . . . .

Power Up With The Power Switch (PWRONX) 3–28. . . . . . .

Power Up by RTC 3–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Up by IBI 3–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Acting Dead 3–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Active Mode 3–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sleep Mode 3–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Charging 3–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Off 3–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Documentation

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Watchdog 3–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Audio control 3–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

External Audio Connections 3–32. . . . . . . . . . . . . . . . . . . . . . .

Analog Audio Accessory Detection 3–33. . . . . . . . . . . . . . . . .

Headset Detection 3–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Internal Audio Connections 3–34. . . . . . . . . . . . . . . . . . . . . . . .

4–wire PCM Serial Interface 3–34. . . . . . . . . . . . . . . . . . . . . . .

Alert Signal Generation 3–35. . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Control 3–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MAD2 3–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Memories 3–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Program Memory 3–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SRAM Memory 3–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EEPROM Memory 3–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MCU Memory Map 3–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flash Programming 3–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COBBA–GJ 3–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Infrared Transceiver Module 3–47. . . . . . . . . . . . . . . . . . . . . . .

Real Time Clock 3–47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RTC backup battery charging 3–48. . . . . . . . . . . . . . . . . . . . . .

Vibra Alerting Device 3–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IBI Accessories 3–49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Phone Power–on by IBI 3–49. . . . . . . . . . . . . . . . . . . . . . . . . . .

IBI power–on by phone 3–49. . . . . . . . . . . . . . . . . . . . . . . . . . .

RF Module 3–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Functional Description 3–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF block 3–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Ratings 3–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF Frequency Plan 3–52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Distribution Diagram 3–53. . . . . . . . . . . . . . . . . . . . . . . . . .

DC Characteristics 3–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Regulators 3–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control Signals 3–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Frequency synthesizers 3–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver 3–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter 3–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AGC strategy 3–61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AFC function 3–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver blocks 3–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RX interstage filter GSM 3–62. . . . . . . . . . . . . . . . . . . . . . . . . . . .

RX interstage filter DCS1800 3–62. . . . . . . . . . . . . . . . . . . . . . . .

GSM UHF–mixer in CRFU3 3–62. . . . . . . . . . . . . . . . . . . . . . . . .

DCS1800 UHF–mixer in CRFU3 3–63. . . . . . . . . . . . . . . . . . . . .

Transmitter Blocks 3–63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TX interstage filter GSM 3–63. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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TX interstage filter DCS1800 3–63. . . . . . . . . . . . . . . . . . . . . . . .

Power amplifier MMIC GSM 3–63. . . . . . . . . . . . . . . . . . . . . . . . .

Power amplifier MMIC DCS1800 3–63. . . . . . . . . . . . . . . . . . . . .

Synthesizer blocks 3–64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VHF VCO 3–64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

UHF PLL 3–64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

UHF PLL block in SUMMA 3–64. . . . . . . . . . . . . . . . . . . . . . . . . .

UHF VCO module 3–64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

UHF local signal input in CRFU3 3–65. . . . . . . . . . . . . . . . . . . . .

Connections 3–65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF connector and antenna switch 3–65. . . . . . . . . . . . . . . . . . . .

Timings 3–70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Synthesizer control timing 3–70. . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter power switching timing diagram 3–72. . . . . . . . . . .

Synthesizer clocking 3–72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts list of UG3 (EDMS Issue 6.3) Code: 0201113 3–73. . . . . . . . . .

Technical Documentation

Parts list of UG3MA (EDMS Issue 1.1) Code: 0201380 3–83. . . . . .

Schematic Diagrams: UG3

Block Diagram of Baseband (Version 2.1 Edit 98) layout version 9.1 UG3/A3–1

Block Diagram of COBBA, CCONT and MAD UG3/A3–2. . . . . . . . . . . . . . .

Circuit Diagram of Power Supply (Version 2.2 Edit 295) layout 10.3 UG3/A3–3. Circuit Diagram of SIM Connector (Version 2.2 Edit 97) layout 10.3 UG3/A3–4 Circuit Diagram of CPU Block (Version 2.2 Edit 200) layout 10.3 UG3/A3–5. . Circuit Diagram of Audio (Version 2.2 Edit 155) layout 10.3 UG3/A3–6. . Circuit Diagram of IR Module (Version 2.2 Edit 126) for layout 10.3 UG3/A3–7

RF Block Diagram UG3/A3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Circuit Diagram of RF Block (Version 2.2 Edit 382) for layout 10.3 UG3/A3–9. Circuit Diagram of UIF (Version 2.2 Edit 124) for layout 10.3 UG3/A3–10.

Layout Diagram of UG3 – Top (Version 10.3) UG3/A3–11. . . . . . . . . . . . . . .

Layout Diagram of UG3 – Bottom (Version 10.3) UG3/A3–11. . . . . . . . . . . .

Testpoint references UG3/A3–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Schematic Diagrams: UG3MA

Block Diagram of Baseband (Version 2.1 Edit 98) layout 9.1 UG3MA/A3–1.

Block Diagram of COBBA, CCONT and MAD UG3MA/A3–2. . . . . . . . . . . . . . .

Circuit Diagram of Power Supply (V. 2.31 Edit 299) layout 10.4 UG3MA/A3–3 Circuit Diagram of SIM Connector (V. 2.31 Edit 99) layout 10.4 UG3MA/A3–4 Circuit Diagram of CPU Block (V. 2.31 Edit 203) layout 10.4 UG3MA/A3–5. . Circuit Diagram of Audio (Version 2.31 Edit 155) layout 10.4 UG3MA/A3–6. Circuit Diagram of IR Module (V. 2.31 Edit 128) layout 10.4 UG3MA/A3–7. . .

RF Block Diagram UG3MA/A3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Circuit Diagram of RF Block (V. 2.31 Edit 309) layout 10.4 UG3MA/A3–9. . . .

Circuit Diagram of UIF (Version 2.31 Edit 126) layout 10.4 UG3MA/A3–10. . .

System Module

Layout Diagram of UG3MA – Top (Version 10.4) UG3MA/A3–11. . . . . . . . . . . .

Layout Diagram of UG3MA – Bottom (Version 10.4) UG3MA/A3–11. . . . . . . . .

Testpoint references UG3MA/A3–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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System Module

Transceiver NSM–1

Introduction

The NSM–1 is a dualband transceiver unit designed for operation in

GSM900, GSM1800 and GSM900/1800 dualband networks. GSM pow-

er class is 4 and PCN power class is 1.

The transceiver has full graphic display, and the user interface is based

on two soft keys.

The transceiver has leakage tolerant earpiece and omnidirectional micro-

phone providing excellent audio quality. Transceiver supports full rate, en-

hanced full rate and half rate speech decoding.

The antenna is a fixed helix. External antenna connection is provided by

rear RF connector

Integrated IR link provides for connection between two NSM–1NY trans-

ceivers or a transceiver and a PC, or a transceiver and a printer.

Technical Documentation

The small SIM ( Subscriber Identity Module ) card is located inside the

phone, beneath the battery pack.

Mode Description

There are five different operation 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 sleep clock is run-

ning.

In the active mode all the circuits are supplied with power although some

parts might be in the 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 charge and the

maintenance mode.

Page 3–6

The local mode is used for alignment and testing.

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Interconnection Diagram

10 9

Keypad Display

Keypad

System Module

User Interface

Module

PWR Key

RTC

battery

UE4

System/RF

Module

Speaker

Antenna

MIC

connectors for external signals

System

Connector

3 + 3 6

Charger

accessories

UG3

RF SIM

SIM card

external antenna

battery

Battery

NSM–1

IR Link

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System Module

Circuit Description

The transceiver electronics consist of the Radio Module, RF + System

blocks, the UI PCB, the display module and audio components. The key-

pad and the display module are connected to the Radio Module with a

connectors. System blocks and RF blocks are interconnected with PCB

wiring. The Transceiver is connected to accessories via a bottom system

connector with charging and accessory control.

The System blocks provide the MCU, DSP and Logic control functions in

MAD ASIC, external memories, audio processing and RF control hard-

ware in COBBA ASIC. Power supply circuitry CCONT ASIC delivers oper-

ating voltages both for the System and the RF blocks.

The RF block is designed for a handportable phone which operates in the

GSM and DCS1800 systems. 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. The SUMMA ASIC is

used for VHF and PLL functions. The CRFU3 ASIC is used at the front

end.

Technical Documentation

External and Internal Connectors

Contact 1

DC–jack

Contact 2

Microphone port

Contacts

3...8 Contact 9

Rubber boot

Microphone

Solderable element,

2 pcs

Cable/Cradle connector, guiding/fixing hole, 3 pcs

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System Connector Contacts

Con-

tact

1 VIN Charger input volt-

DC– JACK

Line

Sym-

bol

L_GND Charger ground

VIN Charger input volt-

Parameter Mini-

age Charger input cur-

rent

input

age Charger input cur-

rent

System Module

Typical

mum

7.1 720

7.24 320

0 0 0 V/ Supply ground

7.1 720

7.24 320

/ Nomi-

nal

8.4 800

7.6 370

8.4 800

7.6 370

Maxi-

mum

9.3 850

7.95 420

9.3 850

7.95 420

Unit / Notes

V/ Unloaded ACP–9 Charger mA/ Supply current V/ Unloaded ACP–7 Charger mA/ Supply current

DC– JACK

2 CHRG

Mic ports

3 XMIC Input signal volt-

4 SGND Signal ground 0 0 mVrms 5 XEAR Output signal volt-

6 MBUS I/O low voltage

7 FBUS_RXInput low voltage

CHRG CTRL

CTRL

Output high voltage

PWM frequency

Output high voltage

PWM frequency

Acoustic signal N/A N/A N/A Microphone sound ports

age

I/O high voltage

Input high voltage02.0

2.0

2.8 V/ Charger control (PWM)

60 1 Vpp mVrms

80 1 Vpp mVrms

0.8

2.8

0.8

2.8

high Hz /PWM frequency for

charger

high Hz /PWM frequency for

charger

Serial bidirectional control bus. Baud rate 9600 Bit/s

V/ Fbus receive. V/ Serial Data, Baud rate

9.6k–230.4kBit/s

8 FBUS_TXOutput low voltage

Output high voltage

9 L_GND Charger ground

input

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2.0

0 0 0 V/ Supply ground

0.8

2.8

V/ Fbus transmit. V/ Serial Data, Baud rate

9.6k–230.4kBit/s

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Im edance

50ohm

tor

PAMS

System Module

Technical Documentation

RF Connector Contacts

Con-

tact

1 EXT_ANT 2 GND

Line

Symbol

Parameter Mini-

mum

Typical / Nomi-

nal

Maxi-

mum

Unit / Notes

External antenna connec-

0 V DC

Supply Voltages and Power Consumtion

Connector Line Symbol Minimum Typical /

Nominal

Charging VIN 7.1 8.4 9.3 V/ Travel charger,

Charging VIN 7.25 7.6 7.95 V/ Travel charger.

Charging I / VIN 720 800 850 mA/ Travel char-

Charging I / VIN 320 370 420 mA/ Travel char-

Maximum/

Peak

Unit / Notes

ACP–9

ACP–7

ger, ACP–9

ger, ACP–7

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Power Distribution Diagram

The power supply is based on the ASIC circuit CCONT. The chip consists of regulators and control circuits providing functions like power up, reset and watchdog. External buffering is required to provide more current on some blocks.

The MCU and the CCONT circuits control charging together, detection being carried out by the CCONT and higher level intelligent control by the MCU. The MCU measures battery voltage by means of the CCONT. The CCONT also measures charger voltage, temperature and size of the battery.

Detailed power distribution diagrams are given in Baseband blocks and RF blocks later in the document.

V_IN

PWM

CHARGING CIRCUITRY

PWM

CCONT

TXP

VBAT

System Module

bias

power det

POWER AMPLIFIER

VBAT

BATTERY

VBAT

Note: VTX uses a discrete transistor to increse VR7 output capability

VSIM

SIM

V5V

VBAT

VBB

T X

P W R

MAD

VBB

UIF

PWRONX MEM

VBB

V5V/VCP

VRX_2 VSYN_2

VRX_1

V_TX

VSYN_1

VXO

VCOBBA

VREF

VBB

SUMMA

CRFU3

VREF

BAND SEL

RF SYNTHESIZERS

VCXO

COBBA

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System Module

Baseband Module

Block Diagram

TX/RX SIGNALS

COBBA

COBBA SUPPLY

RF SUPPLIES

CCONT

BB SUPPLY

Technical Documentation

PA SUPPLY

32kHz CLK

SLEEP CLOCK

SIM

13MHz CLK

SYSTEM CLOCK

AUDIOLINES

BASEBAND

Technical Summary

The baseband module consists of four asics, CHAPS, CCONT, COBBA– GJ and MAD2, which take care of the baseband functions of NSM–1.

The baseband is running from a 2.8V power rail, which is supplied by a power controlling asic. In the CCONT asic 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) for flash programming voltage and other purposes where a higher voltage is needed. 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 polyacene battery. The backup time with this battery is minimum of ten minutes.

MAD +

MEMORIES

VBAT

BATTERY

CHAPS

SYSCON

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Technical Documentation

The interface between the baseband and the RF section is handled by a specific asic. The COBBA asic 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 UI section. The COBBA supplies the analog TXC and AFC signals to rf section according to the MAD DSP digital control and converts analog AGC into digital signal for the DSP. Data transmission between the COBBA and the MAD is implemented using a parallel connection for high speed signalling and a serial connection for PCM coded audio signals. Digital speech processing is handled by the MAD asic. The COBBA asic 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 three external microphone inputs and two external earphone outputs. The inputs can be taken from an internal microphone, a headset microphone or from an external microphone signal source. The microphone signals from different sources are connected to separate inputs at the COBBA asic.

System Module

The output for the internal earphone is a dual ended type output capable of driving a dynamic type speaker. Input and output signal source selection and gain control is performed inside the COBBA asic 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 shieding is implemented using a metallized plastic B–cover with a conductive rubber seal on the ribs. On the other side the engine is shielded with a frame having a conductive rubber on the inner walls, which makes a contact to a ground ring of the engine board and a ground plane of the UI–board. Heat generated by the circuitry will be conducted out via the PCB ground planes.

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Technical Documentation

Bottom Connector External Contacts

Contact Line Symbol Function

1 VIN Charger input voltage DC–jack

side contact (DC–plug ring)

DC–jack center pin

DC–jack side contact (DC–plug jacket)

2 CHRG_CTRL Charger control output (from phone) Microphone

acoustic ports 3 XMIC Accessory microphone signal input (to phone) 4 SGND Accessory signal ground

L_GND Charger ground

VIN Charger input voltage

CHRG_CTRL Charger control output (from phone)

Acoustic signal (to phone)

5 XEAR Accessory earphone signal output (from phone) 6 MBUS MBUS, bidirectional serial data i/o 7 FBUS_RX FBUS, unidirectional serial data input (to phone) 8 FBUS_TX FBUS, unidirectional serial data output (from phone) 9 L_GND Charger ground

Bottom Connector Signals

Pin Name Min Typ Max Unit Notes

1,3 VIN

2 L_GND 0 0 V Supply ground

7.25

3.25 320

7.1

3.25 720

7.6

3.6

370

8.4

3.6

800

7.95

16.9

3.95 420

9.3

3.95 850

V V V

V V

Unloaded ACP–7 Charger (5kohms load)

Peak output voltage (5kohms load) Loaded output voltage (10ohms load) Supply current

Unloaded ACP–9 Charger Loaded output voltage (10ohms load) Supply current

4,5 CHRG_

TRL

6 MICP N/A see section Internal microphone 7 MICN N/A see section Internal microphone

Page 3–14

0 0.5 V Charger control PWM low

2.0 2.85 V Charger control PWM high 32 Hz PWM frequency for a fast charger

1 99 % PWM duty cycle

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PAMS

Baud rate 9600 Bit/s

Baud rate 9.6k–230.4kBit/s

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Technical Documentation

8 XMIC

HMIC 0 3.2 29.3 mV Microphone signal

9 SGND

10 XEAR

2.0 2.2 kΩ Input AC impedance

1.47 1.55 V Mute (output DC level)

2.5 2.85 V Unmute (output DC level)

100 600 µA Bias current

System Module

NotesUnitMaxTypMinNamePin

1 Vpp Maximum signal level

58 490 mV Maximum signal level

Connected to COBBA MIC3P input 47 Ω Output AC impedance (ref. GND) 10 µF Series output capacitance

380 Ω Resistance to phone ground

47 Ω Output AC impedance (ref. GND) 10 µF Series output capacitance

16 300 Ω Load AC impedance to SGND (Head-

4.7 10 kΩ Load AC impedance to SGND (Acces-

1.0 Vpp Maximum output level (no load) 22 626 mV Output signal level 10 kΩ Load DC resistance to SGND (Acces-

16 1500 Ω Load DC resistance to SGND (Head-

2.8 V DC voltage (47k pull–up to VBB)

HEAR 28 626 mV Earphone signal (HF– HFCM)

11 MBUS 0 logic low

2.0 logic high 2.85

12 FBUS_RX 0 logic low

2.0 logic high 2.85

13 FBUS_TX 0 logic low

2.0 logic high 2.85

set)

sory)

set)

Connected to COBBA HF output

0.8 V Serial bidirectional control bus. Phone has a 4k7 pullup resistor

0.8 V Fbus receive. Serial Data Phone has a 220k pulldown resistor

0.5 V Fbus transmit. Serial Data Phone has a 47k pullup resistor

14 GND 0 0.3 V Supply ground

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5.0

Maximum voltage in call state with charger

PAMS

System Module

Technical Documentation

Battery Connector

Pin Name Min Typ Max Unit Notes

1 BVOLT 3.0 3.6 4.5

5.3

2 BSI

3 BTEMP

0 2.85 V Battery size indication

2.2 18 kohm Battery indication resistor (Ni battery) 20 22 24 kohm Battery indication resistor (service battery) 27 51 kohm Battery indication resistor (4.1V Lithium

68 91 kohm Battery indication resistor (4.2V Lithium bat-

0 1.4 V Battery temperature indication

V Battery voltage

Maximum voltage in idle state with charger

Phone has 100kohm pull up resistor.

SIM Card removal detection

(Treshold is 2.4V@VBB=2.8V)

battery)

tery)

Phone has a 100k (+–5%) pullup resistor,

Battery package has a NTC pulldown resis-

tor:

47k+–5%@+25C , B=4050+–3%

2.1

5 10

1.9 90 100

0 1 kohm Local mode initialization (in production)

20 22 25 kHz PWM control to VIBRA BATTERY

4 BGND 0 0 V Battery ground

2.85 200

Phone power up by battery (input)

Power up pulse width

Battery power up by phone (output)

Power up pulse width

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System Module

SIM Card Connector

Pin Name Parameter Min Typ Max Unit Notes

4 GND 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

1 SIMCLK Frequency

Trise/Tfall

4.8

2.8

4.0 0

2.8 0

4.0

2.8

5.0

3.0 ”1”

”0” ”1” ”0”

”1” ”1”

3.25

5.2

3.2

VSIM

0.5

VSIM

0.5

VSIM VSIM

V Supply voltage

V SIM data

Trise/Tfall max 1us

V SIM reset

MHz

SIM clock

Internal Microphone

Pin Name Min Typ Max Unit Notes

6 MICP 0.55 4.1 mV Connected to COBBA MIC2N input. The

maximum value corresponds to1 kHz, 0 dBmO network level with input amplifier gain set to 32 dB. typical value is maximum value – 16 dB.

7 MICN 0.55 4.1 mV Connected to COBBA MIC2P input. The

maximum value corresponds to1 kHz, 0 dBmO network level with input amplifier gain set to 32 dB. typical value is maximum value – 16 dB.

Infrared Module Connections

An infrared transceiver module is designed to substitute an electrical cable between the phone and a PC. The infrared transceiver module is a stand alone component capable to perform infrared transmitting and receiving functions by transforming signals transmitted in infrared light from and to electrical data pulses running in two wire asyncronous databus. In DCT3 the module is placed inside the phone at the top of the phone.

Signal Parameter Min Typ Max Unit Notes

IRON IR–module on/off 2.0 2.85 V Iout@2mA FBUS_RX

FBUS_TX

IR receive pulse 0 0.8 V IR receive no pulse 2.0 2.85 V IR transmit pulse 2.0 2.85 V Iout@2mA IR transmit no pulse 0 0.5 V

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System Module

Technical Documentation

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 polyacene battery that can keep the clock running minimum of 10 minutes. 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 supply to CCONT

3.02 3.15 3.28 V

100 200 500 uA Vout@VBAT–0.2V

2 3.28 V Battery capacity

65uAh

80 uA

Buzzer

Signal Maximum

BuzzPWM /

BUZZER

Input

output cur-

rent

2mA 2.5V 0.2V 0...50 (128 lin-

high level

Input

low level

Level (PWM)

range, %

ear steps)

Frequency

range, Hz

440...4700

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Technical Documentation

Baseband Power Distribution

Functional Description

In normal operation the baseband is powered from the phone‘s battery. The battery consists of three Nickel Metal Hydride cells. There is also a possibility to use batteries consisting of one Lithium–Ion cell. An external charger can be used for recharging the battery and supplying power to the phone. The charger can be either a standard charger that can deliver around 400 mA or so called performance charger, which can deliver supply current up to 850 mA.

The baseband contains components that control power distribution to whole phone excluding those parts that use continuous battery supply. The battery feeds power directly to three parts of the system: CCONT, power amplifier, and UI (buzzer and display and keyboard lights). Figure below shows a block diagram of the power distribution.

The power management circuit CHAPS provides protection agains overvoltages, charger failures and pirate chargers etc. that would otherwise cause damage to the phone.

System Module

PA SUPPLY

VCOBBA

COBBA

VBAT

VBB

BASEBAND

VBB

MAD

MEMORIES

RF SUPPLIES

CCONT

PWRONX

CNTVR

BOTTOM CONNECTOR

PWM

VBB PURX

LIM

CHAPS

VIN

VSIM

VBAT

RTC

BACKUP

SIM

BATTERY

Battery charging

The electrical specifications give the idle voltages produced by the acceptable chargers at the DC connector input. The absolute maximum in-

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System Module

MAD

VBAT

MAD

CCONTINT

Technical Documentation

put 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.

LIM

0R22

PWM_OUT

CCONT

GND

ICHAR

VCHAR

VOUT

CHAPS

RSENSE

PWM

22k

VCH

GND

TRANSCEIVER

100k

10k

30V

VIN

CHRG_CTRL

L_GND

CHARGER

NOT IN ACP–7

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. 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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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 different battery types (Li or Ni). The power switch is immediately turned OFF if the voltage in VOUT rises above the selected limit VLIM1 or VLIM2.

Parameter Symbol LIM input Min Typ Max Unit

Output voltage cutoff limit

(during transmission or Li–

battery)

Output voltage cutoff limit

(no transmission or Ni–bat-

tery)

VLIM1 LOW 4.4 4.6 4.8 V

VLIM2 HIGH 4.8 5.0 5.2 V

The voltage limit (VLIM1 or VLIM2) is selected by logic LOW or logic HIGH on the CHAPS (N101) LIM– input pin. Default value is lower limit VLIM1.

System Module

VCH

VCH<VOUT

VOUT

VLIM1 or VLIM2

When the switch in output overvoltage situation has once turned OFF, it stays OFF until the the battery voltage falls below VLIM1 (or VLIM2) and PWM = LOW is detected. The switch can be turned on again by setting PWM = HIGH.

SWITCH

PWM (32Hz)

Original 10/98

ON OFF

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System Module

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 VLIM1 (or VLIM2), 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

Vpor

VLIM

Vstart

Droop depends on load

& C in phone

Technical Documentation

Istart off due to VCH<Vpor

Vstarthys

PWM

SWITCH

1.1Battery removed, (standard) charger connected, VOUT rises (follows charger voltage)

2. VOUT exceeds limit VLIM(X), switch is turned immediately OFF

3.3VOUT falls (because no battery) , also VCH<Vpor (standard chargers full–rectified

4. Software sets PWM = LOW –> CHAPS does not 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

”1”

”0”

OFF

output). When VCH > Vpor and VOUT < VLIM(X) –> switch turned on again (also PWM is still HIGH) and VOUT again exceeds VLIM(X).

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Different PWM Frequencies ( 1Hz and 32 Hz)

When a travel charger (2– wire charger) is used, the power switch is turned ON and OFF by the PWM input when the 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.

The performance travel charger (3– wire charger) is controlled with PWM at a frequency of 32Hz. When the PWM rate is 32Hz CHAPS keeps the power switch continuously in the ON state.

SWITCH

ON ONON OFF OFF

System Module

PWM (1Hz)

SWITCH

PWM (32Hz)

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System Module

Battery Identification

Different battery types are identified by a pulldown resistor inside the battery pack. The BSI line inside transceiver has a 100k pullup to VBB. The MCU can identify the battery by reading the BSI line DC–voltage level with a CCONT (N100) A/D–converter.

BATTERY

BVOLT

BTEMP

BSI

2.8V

100k

10k

Technical Documentation

TRANSCEIVER

BSI

CCONT

The battery identification line is used also for battery removal detection. The BSI line is connected to a SIMCardDetX line of MAD2 (D200). SIMCardDetX is a threshold detector with a nominal input switching level

0.85xVcc for a rising edge and 0.55xVcc for a falling edge. The battery removal detection is used as a trigger to power down the SIM card before the power is lost. The BSI contact in the battery pack is made 0.7mm shorter than the supply voltage contacts so that there is a delay between battery removal detection and supply power off,

Vcc

0.850.05 Vcc

0.550.05 Vcc

BGND

10n

SIMCardDetX

MAD

Page 3–24

GND

SIMCARDDETX

IGOUT

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Battery Temperature

The battery temperature is measured with a NTC inside the battery pack. The BTEMP line inside transceiver has a 100k pullup to VREF. The MCU can calculate the battery temperature by reading the BTEMP line DC– voltage level with a CCONT (N100) A/D–converter.

BATTERY

BVOLT

BSI

BTEMP

TRANSCEIVER

VREF

100k

10k

System Module

BTEMP

CCONT

NTC

Supply Voltage Regulators

The heart of the power distrubution is the CCONT. It includes all the voltage regulators and feeds the power to the whole system. The baseband digital parts are powered from the VBB regulator which provides 2.8V baseband supply. The baseband regulator is active always when the phone is powered on. The VBB baseband regulator feeds MAD and memories, COBBA digital parts and the LCD driver in the UI section. There is a separate regulator for a SIM card. The regulator is selectable between 3V and 5V and controlled by the SIMPwr line from MAD to CCONT. The COBBA analog parts are powered from a dedicated 2.8V supply VCOBBA. The CCONT supplies also 5V for RF and for flash VPP. The CCONT contains a real time clock function, which is powered from a RTC backup when the main battery is disconnected.

BGND

10n

VibraPWM

MAD

MCUGenIO4

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System Module

The RTC backup is rechargable polyacene battery, which has a capacity of 50uAh (@3V/2V) The battery is charged from the main battery voltage by the CHAPS when the main battery voltage is over 3.2V. The charging current is 200uA (nominal).

Operating mode Vref RF REG VCOB-

Power off Off Off Off Off Off Pull

Power on On On/Off On On On On/Off Reset On Off

VR1 On

Sleep On Off On On On On/Off

NOTE:

On On Off Pull

Technical Documentation

VBB VSIM SIMIF

down

CCONT includes also five additional 2.8V regulators providing power to the RF section. These regulators can be controlled either by the direct control signals from MAD or by the RF regulator control register in CCONT which MAD can update. Below are the listed the MAD control lines and the regulators they are controlling.

– TxPwr controls VTX regulator (VR5) – RxPwr controls VRX regulator (VR2) – SynthPwr controls VSYN_1 and VSYN_2 regulators (VR4 and VR3) – VCXOPwr controls VXO regulator (VR1) CCONT generates also a 1.5 V reference voltage VREF to COBBA,

SUMMA and CRFU3. The VREF voltage is also used as a reference to some of the CCONT A/D converters.

In additon to the above mentioned signals MAD includes also TXP control signal which goes to SUMMA power control block and to the power amplifier. The transmitter power control TXC is led from COBBA to SUMMA.

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Switched Mode Supply VSIM

There is a switched mode supply for SIM–interface. SIM voltage is selected via serial IO. The 5V SMR can be switched on independently of the SIM voltage selection, but can’t be switched off when VSIM voltage value is set to 5V.

NOTE: VSIM and V5V can give together a total of 30mA. In the next figure the principle of the SMR / VSIM–functions is shown.

CCONT External

VBAT

System Module

V5V_4 V5V_3

V5V_2

Power Up

VSIM

The baseband is powered up by:

1. Pressing the power key, that generates a PWRONX interrupt

2. Connecting a charger to the phone. The CCONT recognizes

3. A RTC interrupt. If the real time clock is set to alarm and the

5V reg

V5V

signal from the power key to the CCONT, which starts the power up procedure.

the charger from the VCHAR voltage and starts the power up procedure.

phone is switched off, the RTC generates an interrupt signal, when the alarm is gone off. The RTC interrupt signal is connected to the PWRONX line to give a power on signal to the CCONT just like the power key.

5/3V

Original 10/98

4. A battery interrupt. Intelligent battery packs have a possibility to power up the phone. When the battery gives a short (10ms) voltage pulse through the BTEMP pin, the CCONT wakes up and starts the power on procedure.

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System Module

Power up with a charger

When the charger is connected CCONT will switch on the CCONT digital voltage as soon as the battery voltage exeeds 3.0V. The reset for CCONT’s digital parts is released when the operating voltage is stabilized ( 50 us from switching on the voltages). Operating voltage for VCXO is also switched on. The counter in CCONT digital section will keep MAD in reset for 62 ms (PURX) to make sure that the clock provided by VCXO is stable. After this delay MAD reset is relased, and VCXO –control (SLEEPX) is given to MAD. The diagram assumes empty battery, but the situation would be the same with full battery:

When the phone is powered up with an empty battery pack using the standard charger, the charger may not supply enough current for standard powerup procedure and the powerup must be delayed.

Power Up With The Power Switch (PWRONX)

Technical Documentation

When the power on switch is pressed the PWRONX signal will go low. CCONT will switch on the CCONT digital section and VCXO as was the case with the charger driven power up. If PWRONX is low when the 64 ms delay expires, PURX is released and SLEEPX control goes to MAD. If PWRONX is not low when 64 ms expires, PURX will not be released, and CCONT will go to power off ( digital section will send power off signal to analog parts)

SLEEPX

PURX

CCPURX

PWRONX

12 3

1:Power switch pressed ==> Digital voltages on in CCONT (VBB) 2: CCONT digital reset released. VCXO turned on 3: 62 ms delay to see if power switch is still pressed.

Page 3–28

VR1,VR6 VBB (2.8V)

Vchar

Original 10/98

+ 64 hidden pages

Nokia 6150 Service Manual 03sys

CONTENTS

Mode Description

Interconnection Diagram

System Module

Circuit Description

External and Internal Connectors

Baseband Module

Block Diagram

Technical Summary

Baseband Power Distribution