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Customer Care Solutions
RH-20 Series Transceivers
System Module and User
Interface
Issue 1 10/2003 Company Confidential Nokia Corporation
RH-20 Company confidential
System Module and User Interface CCS Technical Documentation
Table of Contents
Page No
Glossary of Terms ..........................................................................................................3
Introduction ....................................................................................................................6
Electrical Modules .......................................................................................................6
Interconnection Diagram .............................................................................................6
System Module: Baseband .............................................................................................7
Baseband Module, technical summary ........................................................................7
Environmental Specifications ......................................................................................8
Temperature Conditions ............................................................................................8
Humidity and Water Resistance ................................................................................8
Baseband Technical Specifications .............................................................................9
Absolute Maximum Ratings ......................................................................................9
DC Characteristics .....................................................................................................9
Power Distribution diagram ....................................................................................11
Baseband External and Internal Signals and Connections ........................................12
FM Radio Interface .................................................................................................13
External Signals and Connections .............................................................................17
Keyboard (board-to-board) Connector ....................................................................17
LCD Connector (Board to Board) .............................................................................18
DC Connector ..........................................................................................................19
Bottom Connector ...................................................................................................19
SIM connector .........................................................................................................21
Internal Signals and Connections ............................................................................21
Baseband Functional Description ................................................................................23
Modes of Operation ...................................................................................................23
No Supply ................................................................................................................23
Back-up ...................................................................................................................23
Acting Dead .............................................................................................................23
Active ......................................................................................................................23
Sleep Mode ..............................................................................................................24
Charging ..................................................................................................................24
Battery .....................................................................................................................24
Power Up and Reset ...................................................................................................25
Power Up with PWR key ........................................................................................26
Power Up when Charger is connected ....................................................................26
Power Up when Battery is connected .....................................................................26
RTC Alarm Power Up .............................................................................................26
A/D Channels .............................................................................................................27
FM Radio ...................................................................................................................28
Camera ....................................................................................................................29
IR Module ...............................................................................................................29
SIM Interface ...........................................................................................................29
ACI ..........................................................................................................................30
External Accessory Regulator .................................................................................31
External Audio ...........................................................................................................31
External Microphone Connection ...........................................................................31
External Earphone Connections ..............................................................................32
Internal Audio ............................................................................................................33
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CCS Technical Documentation System Module and User Interface
IHF Speaker & Stereo Audio Amplifier .................................................................33
Internal Microphone ................................................................................................33
Internal Speaker .......................................................................................................33
IHF Speaker & Stereo Audio Amplifier .................................................................34
Memory Block ...........................................................................................................35
Security ....................................................................................................................35
Clock distribution ......................................................................................................35
Audio Control ..........................................................................................................36
Accessory identification and Power Supply ............................................................36
Backup Battery ........................................................................................................37
RF Module Introduction ...............................................................................................38
RF Frequency Plan ....................................................................................................39
DC characteristics ......................................................................................................40
Regulators ................................................................................................................40
Typical current consumption ...................................................................................41
Power Distribution ..................................................................................................42
RF characteristics .........................................................................................................43
Channel Numbers and Frequencies .........................................................................43
Main RF characteristics ...........................................................................................43
Transmitter characteristics ......................................................................................44
Receiver characteristics ...........................................................................................44
RF Block Diagram ..................................................................................................44
RF Block Diagram RH-20 .......................................................................................45
Frequency Synthesizers .............................................................................................46
Receiver .....................................................................................................................46
Transmitter .................................................................................................................46
Other ........................................................................................................................46
Power Amplifier ......................................................................................................47
RF ASIC Helgo .......................................................................................................48
AFC function ...........................................................................................................48
Antenna ..................................................................................................................48
User interface modules ..............................................................................................49
UI board 1dm ..........................................................................................................49
Keyboard .................................................................................................................49
LCD .........................................................................................................................51
LCD & keypad illumination ....................................................................................52
Internal earpiece ......................................................................................................52
IHF ..........................................................................................................................52
Internal microphone ................................................................................................53
IR module ................................................................................................................53
Vibra ........................................................................................................................53
Pop-Port system connector ......................................................................................54
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RH-20 Company confidential
System Module and User Interface CCS Technical Documentation
Glossary of Terms
ACI Accessory Control Interface
ADC Analog-Digital Converter
AFC Automatic Frequency Control
AGC Automatic Gain Control
API Application Programming Interface
ARM Processor architecture
ASIC Application Specific Integrated Circuit
BB Baseband
CBus Control Bus connecting UPP_WD2 with AEM and UEM
CCS Customer Care Solutions
CMT Cellular Mobile Telephone (MCU and DSP)
COG Chip On Glass
CPU Central Processing Unit
CTSI Clocking Timing Sleep Interrupt
CSP Chip Scale Package
CSTN Colour Super Twisted Nematic
DAC Digital-Analog Converter
DAI Digital Audio Interface
DB Dual band
DCT4 Digital Core Technology, 4th generation
DCN Offset Cancellation control signal
DLL Dynamic Link Library
DRC Dynamic Range Controller
DSP Digital Signal Processor
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CCS Technical Documentation System Module and User Interface
EFR Enhanced Full Rate
EGPRS Enhanced General Packet Radio Service
EMC Electromagnetic compatibility
EMI Electromagnetic Interference
ESD Electro Static Discharge
EXT RF External RF
FBUS Asynchronous Full Duplex Serial Bus
GPRS General Packet Radio Service
GSM Global System for Mobile communications
HS Half Rate Speech
HSCSD High Speed Circuit Switched Data
IC Integrated Circuit
IHF Integrated Hands Free
IMEI International Mobile Equipment Identity
I/O Input/Output
IRDA Infra Red Association
LCD Liquid Crystal Display
LDO Low Drop-Out
LED Light Emitting Diode
LNA Low Noise Amplifier
MBUS 1-wire half duplex serial bus
MCU Micro Controller Unit
MDI MCU-DSP Interface
MFI Modulator and Filter Interface
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System Module and User Interface CCS Technical Documentation
PA Transmit Power Amplifier
PC Personal Computer
PCM Pulse Code Modulation
PCM SIO Synchronous serial bus for PCM audio transferring
PIFA Planar Inverted F-antenna
PWB Printed Wiring Board
PWM Pulse Width Modulation
RF Radio Frequency
RTC Real Time Clock
SIM Subscriber Identity Module
SW Software
UEM Universal Energy Management
UI User Interface
UPP Universal Phone Processor
VCXO Voltage Controlled Crystal Oscillator
VCTCXO Voltage Controlled Temperature Compensated Crystal Oscillator.
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CCS Technical Documentation System Module and User Interface
Introduction
Electrical Modules
The system module 1AO consists of Radio Frequency (RF) and baseband (BB). User Inter-
face (UI) contains display, keyboard, IR link, vibra, system connector and audio parts.
FM radio is located on the main PWB 1AO.
The electrical part of the keyboard is located in separate UI PWB named 1dm. 1dm is
connected to radio module PWB through a spring connector.
The Baseband blocks provide the MCU, DSP, external memory interface and digital con-
trol functions in the UPP ASIC. Power supply circuitry, charging, audio processing and RF
control hard ware are in the UEM ASIC.
The purpose of the RF block is to receive and demodulate the radio frequency signal from
the base station and to transmit a modulated RF signal to the base station.
The UI module is described in this section of the manual.
Interconnection Diagram
Figure 1: Interconnection diagram
Keyboard IHF CIF
module Display Camera
speaker
SIM Battery
Radio
Module
RH-20
NHL-4 Charger
Antenna
Microphone IR Link Earpiece Tomahawk
Accessories
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System Module and User Interface CCS Technical Documentation
System Module: Baseband
The System module (or Engine) consists of Baseband and RF sub-modules, each described
below.
Baseband Module, technical summary
Main functionality of the baseband is implemented into two ASICs: UPP (Universal Phone
Processor) and UEM (Universal Energy Management).
Figure 2: Baseband block diagram
Baseband is running from power rails 2.8V analog voltage and 1.8V I/O voltage. UPP core
voltages can be lowered down to 1.0V, 1.3V and 1.5V. UEM includes 6 linear LDO (Low
Drop-Out) regulator for baseband and 7 regulators for RF. It also includes 4 current
sources for biasing purposes and internal usage. UEM also includes SIM interface which
supports both 1.8V and 3V SIM cards. Note: 5V SIM cards are no longer supported by
DCT-4 generation baseband.
A real time clock function is integrated into the UEM. RTC utilizes the same 32kHz clock
supply as the sleep clock. A backup power supply is provided for the RTC-battery, which
keeps the real time clock running when the main battery is removed. The backup power
supply is a rechargeable surface mounted Li-Ion battery. The backup time with the bat-
tery is 30 minutes minimum.
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CCS Technical Documentation System Module and User Interface
The UEM ASIC handles the analog interface between the baseband and the RF section.
UEM provides A/D and D/A conversion of the in-phase and quadrature receive and trans-
mit signal paths and also A/D and D/A conversions of received and transmitted audio sig-
nals to and from the user interface. The UEM supplies the analog TXC and AFC signals to
RF section according to the UPP DSP digital control. Data transmission between the UEM
and the UPP is implemented using two serial busses, DBUS for DSP and CBUS for MCU.
There are also separate signals for PDM coded audio. Digital speech processing is handled
by the DSP inside UPP ASIC. UEM is a dual voltage circuit, the digital parts are running
from the baseband supply 1.8V and the analog parts are running from the analog supply
2.78V. Also VBAT is directly used (Vibra, LED-driver, Audio amplifier).
The baseband supports both internal and external microphone inputs and speaker out-
puts. Input and output signal source selection and gain control is performed by the UEM
according to control messages from the UPP. Keypad tones, DTMF, and other audio tones
are generated and encoded by the UPP and transmitted to the UEM for decoding. An
external vibra alert control signals are generated by the UEM with separate PWM out-
puts.
RH-20 has a serial control interface: FBUS. FBUS can be accessed through a test pad and
the System Connector as described later. EMC shielding is implemented using a metal-
lized plastic frame. On the other side, the engine is shielded with PWB grounding.
Environmental Specifications
Temperature Conditions
Full functionality through ambient temperature range -10 oC to +55 oC.
Reduced functionality between -25 oC to -10 oC and +55 oC to +75 oC.
Humidity and Water Resistance
Full functionality in humidity range is 5% - 95%.
Condensed or dripping water may cause intermittent malfunctions. Protection against
dripping water is implemented.
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System Module and User Interface CCS Technical Documentation
Baseband Technical Specifications
Absolute Maximum Ratings
Signal Note
Battery Voltage (Idle) -0.3V - 5.5V
Battery Voltage (Call) Max 4.7V
Charger Input Voltage -0.3V - 16V
DC Characteristics
Regulators and Supply Voltage Ranges
Battery Voltage Range
Signal Min. Nom Max Note
VBAT 3.1V 3.6V 4.2V (charging 3.1V SW cut off
high limit voltage)
BB Regulators
Signal Min. Nom Max Note
VANA 2.70V 2.78V 2.86V Imax = 80mA
VFLASH1 2.70V 2.78V 2.86V Imax = 70mA
Isleep = 1.5mA
VFLASH2 2.70V 2.78V 2.86V Imax = 40mA
VSIM 1.745V 1.8V 1.855V Imax = 25mA
2.91V 3.0V 3.09V Isleep = 0.5mA
VIO 1.72V 1.8V 1.88V Imax = 150mA
Isleep = 0.5mA
VCORE 1.0V 1.053V 1.106V Imax = 200mA
1.235V 1.3V 1.365V Isleep = 0.2mA
1.425V 1.5V 1.575V
1.710V 1.8V 1.890V Default value 1.5V
Accessory Regulator
Signal Min Nom Max Note
Vout 2.72V 2.80 2.88V Imax = 70mA
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RF Regulators
Signal Min Nom Max Note
VR1A 4.6V 4.75V 4.9V Imax = 10mA
VR2 2.70V 2.78V 2.86V Imax = 100mA
3.20V 3.3V 3.40V
VR3 2.70V 2.78V 2.86V Imax = 20mA
VR4 2.70V 2.78V 2.86V Imax = 50mA
Isleep = 0.1mA
VR5 2.70V 2.78V 2.86V Imax = 50mA
Isleep = 0.1mA
VR6 2.70V 2.78V 2.86V Imax = 50mA
Isleep = 0.1mA
VR7 2.70V 2.78V 2.86V Imax = 45mA
Current Sources
Signal Min Nom Max Note
IPA1 and IPA2 0mA - 5mA Programmable, +/-6%
VIPA1,VIPA1 = 0V - 2.7V
IPA3 and IPA4 50