Nokia 7200 Service Manual 07 rh23 sysmod

Customer Care Solutions
RH-23 Series Transceivers
System Module and User
Interface
Issue 1 02/2004 Company Confidential Nokia Corporation
CCS Technical Documentation
Table of Contents
Glossary of Terms ......................................................................................................... 3
Introduction ...................................................................................................................6
Electrical Modules ...................................................................................................... 6
Interconnection Diagram ............................................................................................. 6
Baseband ........................................................................................................................ 7
Baseband Module, technical summary ....................................................................... 7
Environmental Specifications ..................................................................................... 8
Baseband Technical Specifications ............................................................................. 9
Baseband External and Internal Signals and Connections ........................................ 12
External Signals and Connections ............................................................................. 19
Baseband Functional Description ................................................................................ 27
Modes of Operation .................................................................................................. 27
Power Up and Reset .................................................................................................. 29
A/D Channels ............................................................................................................ 30
FM Radio .................................................................................................................. 32
External Audio .......................................................................................................... 35
Memory Block .......................................................................................................... 39
Clock distribution ...................................................................................................... 39
RF Module Introduction .............................................................................................. 42
RF Frequency Plan .................................................................................................... 43
DC characteristics ..................................................................................................... 44
RF characteristics ........................................................................................................ 47
Frequency Synthesizers ............................................................................................. 52
Receiver .................................................................................................................... 52
Transmitter ................................................................................................................ 52
Keyboard Illumination .............................................................................................. 55
RH-23
Page No
2 COMPANY CONFIDENTIAL Issue 1 02/2004
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CCS Technical Documentation System Module and User Interface

Abbreviations

ACI Accessory Control Interface
A/D Analog to Digital
ASIC Application Specific Integrated Circuit
BB Baseband
CSTN Color Super Twisted Nematic
DCT4 Digital Core Technology, generation 4
DSP Digital Signal Processor
EMC Electro Magnetic Compatibility
ESD Electro Static Discharge
FSTN Film compensated SuperTwist Nematic
GSM Global System Mobile
HW Hardware
IF Interface
IHF Integrated Hands Free
IMEI International Mobile Equipment Identity
IR Infrared
LCD Liquid Crystal Display
LED Light Emitting Diode
MCU Microprocessor Control Unit
PDM Pulse Density Modulation
PWB Printed Wired Board
PWM Pulse Width Modulation
SIM Subscriber Identification Module
SW Software
UEM Universal Energy Management
UI User Interface
UPP Universal Phone Processor
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Electrical Modules

The RH-23 has been split into two different parts. The System Module 1AQ consists of: Baseband (BB) Engine, FM-radio, Vibra, IR link, Pop-Port system connector, hardware accelerator for camera and Radio Frequency (RF) parts.
The upper block flex 1BG consists of: Colour LCD (primary), B&W display (secondary), camera, earpiece, IHF speaker, SIM connector and antenna
System module and upper block flex are connected together with a hinge flex 1BF via 40-pin board-to-board connectors.
The keyboard is located in separate UI PWB named 1BF. 1BF is connected to system mod­ule through a board-to-board connector.
The baseband blocks provide the MCU, DSP, external memory interface and digital con­trol functions in the UPP ASIC. Power supply circuitry, charging, audio processing and RF control hardware 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.
Figure 1: Interconnection Diagram
IHF Speaker VGA Camera
Antenna
Displays
Upper Block
Module 1BG
Earpiece
IR Link
SIM
Battery
System Module
Keyboard
module
1AQ
Charger
Vibra
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Accessories
Microphone
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CCS Technical Documentation System Module and User Interface

Baseband Module

Technical summary

Main functionality of the baseband is implemented into two ASICs: UPP (Universal Phone Processor) and UEM (Universal Energy Management).
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 1.57V. RH-23 core voltage is 1.57V. 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.
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 bat­tery is 30 minutes minimum.
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 trans­mit signal paths and also A/D and D/A conversions of received and transmitted audio sig­nals to and from the user interface. The UEM supplies the analog TXC and AFC signals to RF section according to the UPP DSP digital control. Data transmission between the UEM and the UPP is implemented using two serial busses, DBUS for DSP and CBUS for MCU. 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.
The baseband supports both internal and external microphone inputs and speaker out­puts. 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 out­puts. RH-23 has a serial control interface: FBUS. FBUS can be accessed through a test pad and the Pop-Port as described later. EMC shielding is implemented using metal cans.
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Figure 2: Baseband Block Diagram
Hall­magnet
Internal antenna
CAMERA
LCD2
Illumination
SIM
PA
RF
Helgo
HWA
UPP
8mv3
LCD1
Illumination
On Keyboard PWB
Keyboard
Illumination
Flash 128Mbit
+
SRAM 8Mbit
FMRadio
Mo/St Amp
Hall­switch
Vibra
Vibra
UEMKEdge
Tomahawk
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IR 1.8V
Battery BL-4C
Charger
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CCS Technical Documentation System Module and User Interface

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.

Baseband Technical Specifications

Table 1: Absolute Maximum Ratings
Signal Note
Battery Voltage (Idle) -0.3V - 5.5V
Battery Voltage (Call) Max 4.8V
Charger Input Voltage -0.3V - 16V

DC Characteristics

Regulators and Supply Voltage Ranges
Table 2: Battery Voltage Range
Signal Min Nom Max Note
VBAT 3.05V 3.6V 4.2V (charging high limit voltage) 3.05V is SW cut off
Table 3: Baseband Regulators
Signal Min Nom Max Note
VANA 2.70V 2.78V 2.86V Imax = 80mA
VFLASH1 2.70V
2.61V
VFLASH2 2.70V 2.78V 2.86V Imax = 40mA
VSIM 1.745V
2.91V
VIO 1.72V 1.8V 1.88V Imax = 150mA
2.78V 2.86V
2.96V
1.8V
3.0V
1.855V
3.09V
Imax = 70mA Isleep= 1.5mA
Imax = 25mA Isleep = 0.5mA
Isleep = 0.5mA
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VCORE 1.492V 1.57V 1.650V Imax = 200mA
Isleep = 0.2mA default value
1.5V
Table 4: Accessory Regulator
Signal Min Nom Max Note
Vout 2.72V 2.78 2.86V Imax = 150mA
Table 5: Camera & LCD Regulator
Signal Min Nom Max Note
Vdig 1.72V 1.80V 1.88V Imax = 150mA
Table 6: RF Regulators
Signal Min Nom Max Note
VR1A / VR1B 4.6V 4.75V 4.9V Imax = 10mA
VR2 2.70V
3.20V
VR3 2.70V 2.78V 2.86V Imax = 20mA
VR4 2.70V 2.78V 2.86V Imax = 50mA
VR5 2.70V 2.78V 2.86V Imax = 50mA
VR6 2.70V 2.78V 2.86V Imax = 50mA
VR7 2.70V 2.78V 2.86V Imax = 45mA
Signal Min Nom Max Note
IPA1 and IPA2 0mA - 5mA Programmable, +/-
2.78V
3.3V
Table 7: Current Sources
2.86V
3.40V
Imax = 100mA
Isleep = 0.1mA
Isleep = 0.1mA
Isleep = 0.1mA
6% VIPA1& VIPA2=0V-
2.7V
IPA3 and IPA4 95µA 100µA 105µA VIPA34 = 0V - 2.7V
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Power Distribution Diagram
Figure 3: Power Distribution Diagram
RF
RTC Battery
Charger
IPA1
IPA2
ISET
VR1A
VR1B
VR2
VR3
VR4
VR5
VR6
VR7
VBACK
VCHARIN
BATTERY
UEM
UEM
analog parts
VBAT
VBAT
VFLASH1
VANA
VFLASH2
VIO
VCORE
VSIM
ILLUMINATION
LED
drivers
VIBRA
FM-
RADIO
COMBO 128 Mbit+8Mbit
LEDs
IHF PA
CAMERA
ACCELLERATOR
UPP
Pop-Port
Accessory Regulator
VIO
LCD1
EXTERNAL 1.8V REGULATOR
VOUT
IR
LCD2
VDIG
SIM
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Clocking Strategy
Figure 4: Clock Distribution Diagram
32kHz XO
UPP
Clock Slicer
CTSI
UIFClk
SIMClk MCCLK
MBusUS ARTClk
GenI OUSARTClk
RxMClk
MFIC lk
PDCClk
SCUClk
CoderClk
AccClk
AccPLLClk
MCUCl k
MCUClk
PLL
PLL
PLL
UIF
SIMIF
PUP
RxModem
MFI
SCU
Coder
ACCIF
EXTBUSC
ARM7
SleepClk
MEMIF
Lead3
UEM
CBUSClk
SIMCardClk
DBUSClk
FLSClk
SIMClkO
LCDCamClk
SIM
LCD1
LCD2
CLK
MONO/STEREO
AMPLIFIER
MEMORIES
COMBO 128Mbit+8Mbit
CAMERA
ACCELLERATOR
GENIO3/
CLK
GENIO 11/
FMCtrlCl k
GENIO 15/
GENIO 24/
FMClk
FM-
RADIO
RFClk
OSC_IN
26MHz VCTCXO
RFBusClk
HELGO
RF
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RF/BB Interface
Figure 5: RF/BB Connections
Table 8: AC and DC Characteristics of RF-Baseband Voltage Supplies
Signal
VBAT Bat-
VR1A VR1B
VR2 UEM HELGO Voltage 2.702.782.86 V Supply for I/Q-modu-
Fro m
tery
UEM HELGO Voltage 4.6 4.754.9 V Supply for charge
To Parameter
PA, UEM, LED drivers, IHF PA, Vibra and IR
Voltage 2.953.6 4.2 V Battery supply. Cut-
Current 2000 mA
Current drawn by PA when ”off”
Current 2 10 mA
Current 65 100 mA
Mi
Typ Max Unit Function
n
0.8 2 µA
off level of DCT4 reg­ulators is 3.05V.
pump for SHF VCO tuning.
lators, buffers, ALS
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VR3 UEM VCTCXO, HELGO Voltage 2.702.782.86 V Supply for VCTCXO,
PLL digital parts
Current 1 20 mA
VR4 UEM HELGO Voltage 2.702.782.86 V Supply for Helgo RX;
PA bias blocks.
Current 50 mA
VR5 UEM HELGO Voltage 2.702.782.86 V Supply for Helgo PLL;
dividers, LO-buffers, prescaler
Current 50 mA
VR6 UEM HELGO Voltage 2.702.782.86 V Supply for Helgo BB
and LNAs
Current 50 mA
VR7 UEM SHF VCO Voltage 2.702.782.86 V Supply for SHF VCO
Current 30 mA
VrefRF01UEM HELGO Voltage 1.3341.351.366V Voltage Reference for
HELGO DCN2 op.amps.
Current 100 µA
VrefRF02UEM VB_EXT Voltage 1.3341.351.366V Voltage reference for
HELGO bias block.
Current 100 µA
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Table 9: AC and DC Characteristics of RF-Baseband Digital Signals
Input characteistics
Signal Front To Parameter
Min Typ Max Unit
TXP UPP (GenIO5) HELGO ”1” 1.38 1.88 V Power amplifier
”0” 0 0.4 V
TXA UPP (GenIO7) HELGO ”1” 1.38 1.88 V Power control
”0” 0 0.4 V
MODE UPP (GenIO9) PA ”1” 1.38 1.88 V GSM/EDGE mode
”0” 0 0.4 V
RFBusEna1XUPP HELGO ”1” 1.38 1.88 V RFbus enable
Function
enable
loop enable
selection
”0” 0 0.4 V
RFBus­Data
RFBusClk UPP HELGO ”1” 1.38 1.88 V RFBus clock
RESET UPP (GENIO6) HELGO ”1” 1.38 1.85 V Reset to HELGO
Signal name From To Parameter
VCTCXO VCTCXO
UPP HELGO ”1” 1.38 1.88 V RFbus data; read/
write
”0” 0 0.4 V
”0” 0 0.4 V
Data frequency 10 MHz
”0” 0 0.4 V
Table 10: AC and DC Characteristics of DCT4 RF-Baseband Analogue Signals
Mi n
UPP Frequency 26 MHzHigh stability (buffered in HELGO)
Typ
MaxUni
t
Function
clock signal for the logic circuits, AC coupled.
Signal amplitude 0.2 0.8 2.0 Vp
p
Duty Cycle 40 60 %
VCTCXOGnd VCTCXO UPP DC Level 0 V Ground for
VCTCXO
RXI/RXQ HELGO UEM Voltage swing
(static)
1.351.4 1.45VppReceived demod­ulated IQ signals
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DC level 1.3 1.351.4 V
TXIP / TXIN UEM HELGO Differential voltage
swing (static)
DC level 1.171.201.23V
TXQP / TXQN UEM HELGO Same specification as for TXIP / TXIN Q-signal
AFC UEM VCTCXO Voltage Min
Max
TxC UEM HELGO Voltage Min
Max
RFTemp HELGO UEM Voltage at -20oC 1,5
Voltage at +25oC 1,7
Voltage at +60oC 1,7
DC_sense PA UEM Voltage 0.6 V PA final stage
2.152.2 2.25VppI-signal
0.0
2.4
2.4
0.1
V Automatic fre-
2.6
0.1 V Transmitter power
7
9
quency control for VCTCXO
level and ramping control
V Temperature sen-
sor of RF
quiescent current level information
IPA1 / IPA2 UEM PA Output Voltage 0 2.7 V PA final stage
quiescent current adjustment
Current range 0 5 mA
Current tolerance -6 +6 %

Baseband functional description

Modes of operation

RH-23 baseband engine has six different functional modes:
1 No supply
2 Backup
3Acting Dead
4Active
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5 Sleep
6 Charging
No Supply
In NO_SUPPLY mode, the phone has no supply voltage. This mode is due to disconnection of main battery and backup battery or low battery voltage level in both of the batteries.
Phone is exiting from NO_SUPPLY mode when sufficient battery voltage level is detected. Battery voltage can rise either by connecting a new battery with VBAT > VMSTR+ or by connecting charger and charging the battery above VMSTR+.
Back_Up
In BACK_UP mode the backup battery has sufficient charge but the main battery can be disconnected or empty (VBAT < VMSTR+ and VBACK > VBUCOFF). VRTC regulator is disabled
in BACK_UP mode. VRTC output is supplied without regulation from backup battery (VBACK). All the other regulators are disabled in BACK_UP mode.
Acting Dead
If the phone is off when the charger is connected, the phone is powered on but enters a state called ”Acting Dead”. To the user, the phone acts as if it was switched off. A bat­tery-charging alert is given and/or a battery charging indication on the display is shown to acknowledge the user that the battery is being charged.
Active
In the Active mode the phone is in normal operation, scanning for channels, listening to a base station, transmitting and processing information. There are several sub-states in the active mode depending on if the phone is in burst reception, burst transmission, if DSP is working etc.
One of the sub-states of the active mode is FM radio on state. In that case, Audio Ampli­fier and FM radio are powered on. FM radio circuitry is controlled by the MCU and 32kHz-reference clock is generated in the UPP. VFLASH2 regulator is operating.
In Active mode the RF regulators are controlled by SW writing into UEM’s registers wanted settings: VR1A can be enabled or disabled. VR2 can be enabled or disabled and its output voltage can be programmed to be 2.78V or 3.3V. VR4 -VR7 can be enabled, disabled, or forced into low quiescent current mode. VR3 is always enabled in Active mode.
Sleep Mode
Sleep mode is entered when both MCU and DSP are in stand–by mode. Both processors control sleep-mode. When SLEEPX signal ‘low’ is detected UEM enters SLEEP mode. VCORE, VIO and VFLASH1 regulators are put into low quiescent current mode. All the RF regulators are disabled in SLEEP. When SLEEPX signal ‘high’ is detected UEM enters ACTIVE mode and all functions are activated.
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