Nokia 2220 Service Manual 8rh42sys
CCS Technical Documentation
RH-42 Series Transceivers
System Module
Issue 2 09/2003 Confidential Nokia Corporation
RH-42
System Module CCS Technical Documentation
Page 2 Nokia Corporation Confidential Issue 2 09/2003
RH-42
CCS Technical Documentation System Module
Contents
Page No
Abbreviations ................................................................................................................. 7
Transceiver RH-42 (2220) ............................................................................................. 9
Introduction ..................................................................................................................9
Operational Modes .................................................................................................. 10
Environmental Specifications ....................................................................................10
Normal and extreme voltages.................................................................................. 10
Temperature Conditions.......................................................................................... 10
Engine Module............................................................................................................. 11
Baseband Module ......................................................................................................11
UEM ..........................................................................................................................12
Introduction to UEM ............................................................................................... 12
Regulators................................................................................................................ 12
RF Interface............................................................................................................. 13
Charging Control..................................................................................................... 13
Digital Interface....................................................................................................... 13
Audio Codec............................................................................................................ 14
UI Drivers................................................................................................................ 14
AD Converters......................................................................................................... 14
UPP ............................................................................................................................14
Introduction ............................................................................................................. 14
Blocks...................................................................................................................... 14
Flash Memory ............................................................................................................15
Introduction ............................................................................................................. 15
User Interface Hardware .............................................................................................. 15
LCD ...........................................................................................................................15
Introduction ............................................................................................................. 15
Interface................................................................................................................... 15
Keyboard ....................................................................................................................15
Introduction ............................................................................................................. 15
Power Key ............................................................................................................... 16
Keys......................................................................................................................... 16
Lights .........................................................................................................................17
Introduction ............................................................................................................. 17
Interfaces ................................................................................................................. 17
Technical Information ............................................................................................. 17
Audio HW .................................................................................................................... 17
Earpiece .....................................................................................................................17
Introduction ............................................................................................................. 17
Microphone ................................................................................................................17
Introduction ............................................................................................................. 17
Buzzer ........................................................................................................................17
Introduction ............................................................................................................. 17
Battery.......................................................................................................................... 18
Phone Battery .............................................................................................................18
Introduction ............................................................................................................. 18
Interface................................................................................................................... 18
Battery Connector ......................................................................................................19
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Battery Connector Interface .......................................................................................19
Accessories Interface ................................................................................................... 19
System connector ......................................................................................................... 19
Introduction ............................................................................................................. 19
Interface................................................................................................................... 19
Technical Information ............................................................................................. 21
PPH-1 Handsfree .......................................................................................................21
Introduction ............................................................................................................. 21
Interface................................................................................................................... 21
Charger IF ..................................................................................................................21
Introduction ............................................................................................................. 21
Interface................................................................................................................... 21
Test Interfaces .............................................................................................................. 22
Production Test Pattern ..............................................................................................22
Other Test Points .......................................................................................................22
EMC ............................................................................................................................. 23
General .......................................................................................................................23
BB Component and Control IO Line Protection .......................................................23
Keyboard lines......................................................................................................... 23
C-Cover ................................................................................................................... 23
PWB ........................................................................................................................ 23
LCD......................................................................................................................... 23
Microphone ............................................................................................................. 23
EARP....................................................................................................................... 23
Buzzer...................................................................................................................... 23
System Connector Lines.......................................................................................... 24
Battery Connector Lines.......................................................................................... 24
MBUS and FBUS.................................................................................................... 24
Transceiver Interfaces .................................................................................................. 24
BB - RF Interface Connections .................................................................................24
BB Internal Connections ............................................................................................28
UPP Block Signals .....................................................................................................33
Memory Block Interfaces ..........................................................................................37
Audio Interfaces .........................................................................................................38
Key/Display blocks ....................................................................................................40
Keyboard Interface.................................................................................................. 40
Display Interface ..................................................................................................... 40
RF Module ................................................................................................................... 40
Requirements .............................................................................................................40
Design ........................................................................................................................40
Software Compensations ...........................................................................................41
Main Technical Characteristics .................................................................................41
RF Frequency Plan .................................................................................................. 41
DC Characteristics .....................................................................................................42
Power Distribution Diagram ................................................................................... 42
Regulators................................................................................................................ 44
Receiver .....................................................................................................................44
AMPS/TDMA 800 MHz Front End........................................................................ 46
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Frequency Synthesizers .............................................................................................46
Transmitter .................................................................................................................47
Common IF ............................................................................................................. 47
Cellular Band........................................................................................................... 47
Power Control ......................................................................................................... 47
Antenna Circuit ....................................................................................................... 48
RF Performance....................................................................................................... 48
Antenna ......................................................................................................................48
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Abbreviations
ACCH Analog Control Channel
A/D Analog to Digital conversion
AMPS Advanced Mobile Phone System
ANSI American National Standards Institute
ASIC Application Specific Integrated Circuit
AVCH Analog Voice Channel
BB Base Band
CSD Circuit Switched Data
CSP Chipped Scale Package. The same as uBGA.
CTIA Cellular Telecommunications Industry Association
D/A Digital to Analog conversion
DCCH Digital Control Channel
DSP Digital Signal Processing
DTCH Digital Traffic Channel
EFR Enhanced Full Rate (codec)
FCC Federal Communications Commission
IrDA Infrared Data Association
IrMC Infrared Mobile Communications
IrOBEX IrDA Object Exchange Protocol
IS Interim Standard
ISA Intelligent Software Architecture
LCD Liquid Crystal Display
LED Light Emitting Diode
MCU Micro Control Unit / Master Control Unit
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MO/MTMobile Originated/Mobile Terminated (SMS)
OOR Out Of Range (mode)
OTA Over The Air (+ service like Programming etc.)
PC Personal Computer (PC Suite = PC program for phone memory function support)
PWB Printed Wired Board
PWM Pulse Width Modulation
RF Radio Frequency
SAR Specific Absorption Rate
SCF Software Component Factory
SMD Surface Mount Device
SMS Short Message Service
SPR Standard Product Requirement
TDD Text Device for the Deaf
TDMA Time Division Multiple Access. Here: US digital cellular system.
TIA Telecommunications Industry Association
TTY Teletype
UEM Universal Energy Management, a Baseband ASIC.
UPP Universal Phone Processor, a Baseband ASIC.
VCTCXOVoltage Controlled temperature Compensated Crystal Oscillator
WAP Wireless Application Protocol (Browser)
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Transceiver RH-42 (2220)
Introduction
The RH-42 is a single band transceiver unit designed for TDMA800 networks. The transceiver consists of the engine module (ST6S_11) and the various assembly parts.
The transceiver has a full graphic display and the user interface is based on a Jack style
UI with two soft keys. An internal antenna is used in the phone, and there is no connection to an external antenna. The transceiver also has a low leakage tolerant earpiece and
an omnidirectional microphone that provides excellent audio quality.
Figure 1: Interconnecting Diagram
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Operational Modes
Below is a list of the phone’s different operational modes:
1 Power Off mode
2 Normal Mode (Power controlled by cellular SW, includes various Active and Idle
states):
• Analog Modes (800 MHz only):
•Analog Control Channel, ACCH
•Analog Voice Channel, AVCH
• Digital Mode (800 MHz):
•Control Channel, DCCH
•Digital Voice Channel, DTCH (Digital Traffic Channel)
•Digital Data Channel, DDCH
Both the analog and digital modes have different states controlled by the Cellular SW.
Some examples are Idle State (on ACCH), Camping (on DCCH), Scanning, Conversation,
NSPS (No Service Power Save, previously OOR = Out of Range).
3 Local mode (both Cellular SW and UI SW non active)
4 Test mode (Cellular SW active but UI SW non active)
Environmental Specifications
Normal and extreme voltages
Voltage range:
• nominal battery voltage: 3.6 V
• maximum battery voltage: 5.0 V
• minimum battery voltage: 3.1 V
Temperature Conditions
Temperature range:
• ambient temperature: -30...+ 60
o
C
• PWB temperature: -30...+85 oC
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• storage temperature range: -40 to + 85 oC
All of the EIA/TIA-136-270A requirements are not exactly specified over the temperature
range. For example, the RX sensitivity requirement is 3dB lower over the –30 - +60 °C
range.
Engine Module
Baseband Module
The core part of the transceiver’s baseband (see the figure below) consists of two ASICs
— the UEM and UPP — and flash memory. The following sections illustrate and explain
these parts in detail.
RFIC CTRL
RF IC
RFCLK
19.44MHz
UPP
MEMADDA
MEMCONT
FLASH 16Mbit
PA supply
RF Supplies
RF RX/TX
PURX
RF RX/TX
SLEEPCLOC
32kHz
CBUS/DBUS
UDIO
BB Supplies
UEM
BATTER
EAR
MIC
BUZZER
KLIGHT/
DLIGHT
PWR ON
BASEBAND
CHARGER CONNECTION
EXTERNAL AUDIO
LCD
DCT4 System Connector
Figure 2: System Block Diagram
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UEM
Introduction to UEM
UEM is the Universal Energy Management IC for digital hand portable phones. In addition to energy management, it performs all the baseband’s mixed-signal functions.
Most UEM pins have 2kV ESD protection, and those signals considered to be more easily
exposed to ESD, have 8kV protection within the UEM. These kinds of signals are (1) all
audio signals, (2) headset signals, (3) BSI, (4) Btemp, (5) Fbus, and (6) Mbus signals.
Regulators
The UEM has six regulators for baseband power supplies and seven regulators for RF
power supplies. The VR1 regulator has two outputs: (1) VR1a and (2) VR1b. In addition to
these, there are two current generators — IPA1 and IPA2 — for biasing purposes.
A bypass capacitor (1uF) is required for each regulator output to ensure stability.
Reference voltages for regulators require external 1uF capacitors. Vref25RF is the reference voltage for the VR2 regulator, Vref25BB is the reference voltage for the VANA,
VFLASH1, VFLASH2, VR1 regulators, Vref278 is the reference voltage for the VR3, VR4,
VR5, VR6, VR7 regulators, and VrefRF01 is the reference voltage for the VIO, VCORE regulators and for the radio frequency (RF).
BB RF Current
VANA: 2.78Vtyp 80mA max VR1a:4.75V 10mA max
VR1b:4.75V
Vflash1: 2.78Vtyp 70mA max IPA2: 0-5mA
Vflash2: 2.78Vtyp
40mA max
VIO: 1.8Vtyp
150mA max
Vcore: 1.0-1.8V
200mA max
VR2:2.78V 100mA max
VR4: 2.78V 50mA max
VR5: 2.78V 50mA max
VR6: 2.78V 50mA max
VR7: 2.78V 45mA max
IPA1: 0-5mA
The VANA regulator supplies the baseband’s (BB) internal and external analog circuitry.
It is disabled in the Sleep mode.
The Vflash1 regulator supplies the LCD, the digital parts of the UEM and Taco ASIC. It is
enabled during startup and goes into the low Iq-mode when in the Sleep mode.
The VIO regulator supplies both the external and internal logic circuitries. It is used by
the LCD, flash and UPP. The regulator goes into the low Iq-mode when in the Sleep mode.
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The VCORE regulator supplies the DSP and the core part of the UPP. The voltage is programmable and the startup default is 1.5V. The regulator goes into the low Iq-mode
when in the Sleep mode.
The VR1 regulator uses two LDOs (VR1A and VR1B) and a charge pump. The charge pump
requires one external 1uF capacitor in the Vpump pin and a 220nF flying capacitor
between the CCP and CCN pins. In practice, the 220nF flying capacitor is formed by 2 x
100nF capacitors that are parallel to each other. The VR1A regulator is used by the Taco
RF ASIC.
The VR2 regulator is used to supply the (1) external RF parts, (2) lower band up converter, (3) TX power detector module, and (4) Taco. In light load situations, the VR2 regulator can be set to the low Iq-mode.
The VR3 regulator supplies the VCTCXO and Taco in the RF. It is always enabled when the
UEM is active. When the UEM is in the Sleep mode, the VR3 is disabled.
The VR4 regulator supplies the RX frontends (LNA and RX mixers).
The VR5 regulator supplies the lower band PA. In light load situations, the VR5 regulator
can be set to the low Iq-mode.
The VR6 regulator supplies the higher band PA and TX amplifier. In light load situations,
the VR6 regulator can be set to the low Iq-mode.
The VR7 regulator supplies the VCO and Taco. In light load situations, the VR7 regulator
can be set to the low Iq-mode.
The IPA1 and IPA2 are programmable current generators. A 27Ω/1%/100ppm external
resistor is used to improve the accuracy of the output current. The IPA1 is used by the
lower PA band and IPA2 is used by the higher PA band.
RF Interface
The interface between the baseband and the RF section is also handled by the UEM. It
provides A/D and D/A conversion of the in-phase and quadrature receive and transmit
signal paths. It also provides A/D and D/A conversions of received and transmitted audio
signals to and from the UI section. The UEM supplies the analog AFC signal to the RF section, according to the UPP DSP digital control.
Charging Control
The CHACON block of the UEM asics controls charging. The needed functions for the
charging controls are the (1) pwm-controlled battery charging switch, (2) charger-monitoring circuitry, (3) battery voltage monitoring circuitry, and (4) RTC supply circuitry for
backup battery charging (Not used in RH-42). In addition to these, external components
are needed for EMC protection of the charger input to the baseband module.
Digital Interface
Data transmission between the UEM and the UPP is implemented using two serial con-
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nections, DBUS (programmable clock) for DSP and CBUS (1.0MHz GSM and 1.08MHz
TDMA) for MCU. The UEM is a dual voltage circuit: the digital parts are run from 1.8V
and the analog parts are run from 2.78V. The Vbat (3,6V) voltage regulators's input is
also used.
Audio Codec
The baseband supports two external microphone input areas and one external earphone
output. The input can be taken from an internal microphone, a headset microphone or
from an external microphone signal source through a headset connector. The output for
the internal earpiece is a dual-ended type output, and the differential output is capable
of driving 4Vpp to the earpiece with a 60 dB minimum signal as the total distortion ratio.
The input and output signal source selection and gain control is performed inside the
UEM Asic, according to the control messages from the UPP.
UI Drivers
There is a single output driver for the buzzer, display, and keyboard LEDs inside the UEM.
These generate PWM square wave for the various devices.
AD Converters
The UEM is equipped with an 11-channel analog-to-digital converter. Some AD converter
channels (LS, KEYB1-2) are not used in RH-42. The AD converters are calibrated in the
production line.
UPP
Introduction
RH-42 uses the UPPv4M ASIC. The RAM size is 4M. The processor architecture consists of
both the DSP and the MCU processors.
Blocks
The UPP is internally partitioned into two main parts: (1) the Brain and (2) the Body.
1 The Processor and Memory System (that is, the Processor cores, Mega-cells,
internal memories, peripherals and external memory interface) is known as the
Brain.
The Brain consists of the following blocks: (1) the DSP Subsystem (DSPSS), (2) the
MCU Subsystem (MCUSS), (3) the emulation control EMUCtl, (4) the program/
data RAM PDRAM, and (5) the Brain Peripherals–subsystem (BrainPer).
2 The NMP custom cellular logic functions are known as the Body.
The Body contains interfaces and functions needed for interfacing other baseband and RF parts. The body consists of, for example, the following sub-blocks:
(1) MFI, (2) SCU, (3) CTSI, (4) RxModem, (5) AccIF, (6) UIF, (7) Coder, (8) BodyIF,
and (9) PUP.
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Flash Memory
Introduction
The RH-42 transceiver uses a 16-Mbit flash as its external memory. The VIO regulator is
used as a power supply for normal in-system operation. An accelerated program/erase
operation can be obtained by supplying Vpp of 12 volt to the flash device.
The device has two read modes: asynchronous and burst. The burst read mode is utilized
in RH-42, except for the start-up, when the asynchronous read mode is used for a short
time.
User Interface Hardware
LCD
Introduction
RH-42 uses a black-and-white GD46 84x48 full dot matrix graphical display. The LCD
module includes the LCD glass, the LCD COG-driver, an elastomer connector, and a metal
frame. The LCD module is included in the lightguide assembly module.
Interface
The LCD is controlled by the UI SW and the control signals are from the UPP ASIC. The
VIO and Vflash1 regulators supply the LCD with power.
The LCD has an internal voltage booster and a booster capacitor is required between
Vout and GND.
Pin 3 (Vss9) is the LCD driver’s ground and Pin 9 (GND) is used to ground the metal
frame.
Keyboard
Introduction
The RH-42 keyboard style follows the Nokia Jack style, without side keys for volume control. The PWR key is located at the top of the phone.
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