Nokia 2280 Service Manual 8 rh17sys
CCS Technical Documentation
RH-17 Series Transceivers
System Module
Issue 1 04/2003 Confidential Nokia Corporation
RH-17
System Module CCS Technical Documentation
Page 2 Nokia Corporation Confidential Issue 1 04/2003
RH-17
CCS Technical Documentation System Module
Contents
Page No
Introduction ..................................................................................................................5
Operational Modes.................................................................................................... 5
Engine Module............................................................................................................... 7
Environmental Specifications ......................................................................................7
Temperature Conditions ..............................................................................................7
Baseband Module........................................................................................................... 8
UEM ............................................................................................................................8
UEM Introduction..................................................................................................... 8
Regulators.................................................................................................................. 8
RF Interface............................................................................................................. 10
Charging Control..................................................................................................... 10
Digital Interface....................................................................................................... 10
Audio Codec............................................................................................................ 10
UI Drivers................................................................................................................ 10
AD Converters......................................................................................................... 10
BB-RF Interface Connections...................................................................................... 11
UPP ............................................................................................................................14
UPP 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............................................................................................................... 15
Keys......................................................................................................................... 16
Lights .........................................................................................................................16
Introduction............................................................................................................. 16
Interfaces................................................................................................................. 16
Technical Information............................................................................................. 16
Vibra ..........................................................................................................................16
Introduction............................................................................................................. 16
Interfaces................................................................................................................. 16
Audio Hardware........................................................................................................... 17
Earpiece .....................................................................................................................17
Introduction............................................................................................................. 17
Microphone ................................................................................................................17
Introduction............................................................................................................. 17
Battery.......................................................................................................................... 17
Phone Battery .............................................................................................................17
Introduction............................................................................................................. 17
Interface................................................................................................................... 17
Battery Connector ......................................................................................................18
Accessories Interface ................................................................................................... 19
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System Module CCS Technical Documentation
System connector .......................................................................................................19
Introduction............................................................................................................. 19
Interface................................................................................................................... 19
TTY/TTD and Universal Headset Jack .....................................................................23
Charger IF ..................................................................................................................23
Introduction............................................................................................................. 23
Interface................................................................................................................... 23
Test Interfaces.............................................................................................................. 24
Production Test Pattern ..............................................................................................24
Other Test Points .......................................................................................................24
EMC............................................................................................................................. 26
General .......................................................................................................................26
BB Component and Control I/O Line Protection ......................................................26
Keyboard Lines ....................................................................................................... 26
PWB........................................................................................................................ 26
LCD......................................................................................................................... 26
Microphone ............................................................................................................. 26
EARP....................................................................................................................... 26
Bottom Connector Lines ......................................................................................... 26
Battery Connector Lines.......................................................................................... 26
M-bus F-bus ............................................................................................................ 27
General Information About Testing ...........................................................................27
Phone operating modes ........................................................................................... 27
RF Module ................................................................................................................... 27
Requirements .............................................................................................................27
Temperature Conditions.......................................................................................... 27
Main Technical Characteristics.................................................................................... 28
Environmental Specifications ................................................................................. 28
Normal and extreme voltages.................................................................................. 28
Voltage range: ............................................................................................................28
Temperature conditions: ............................................................................................28
Antenna ......................................................................................................................28
Transmitter .................................................................................................................29
Synthesizer .................................................................................................................30
UHF LO Synthesizer............................................................................................... 31
Receiver .....................................................................................................................33
GE / CE Interface......................................................................................................... 34
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RH-17
CCS Technical Documentation System Module
Transceiver RH-17
Introduction
The RH-17 is available as either CDMA 800 and AMPS or CDMA 800 only, depending on
model. It supports the new CDMA 1XRTT standard air interface.
Advanced messaging features include SMS (MO/MT), Instant Messaging, Nokia ‘Chat’
and Smart Messaging (ring tones, graphics, images, and animations).
The standard internal battery (BL-5C) provides users with up to 2:40 hours of talk time
(digital) and 1:45 hours of talk time (analog). Standby time is 280 hours (digital) and
25 hours (analog).
Two antennas are used — internal; external, extendable silver “whip”. When the whip
antenna is in, only the internal antenna is active. When the whip is retracted, both
antennas are active. Access to test the cellular engine is possible once the A cover is
removed.
Operational Modes
There are several different operational modes: Modes have different states controlled by
the cellular SW. Some examples are: Idle State (on ACCH), Camping (on DCCH), Scanning, Conversation, No Service Power Save (NSPS) previously OOR = Out of Range.
In the power-off mode, only the circuits needed for power-up are active.
In the idle mode, circuits are powered down and only the sleep clock is running.
In the active mode, all the circuits are supplied with power, although some parts might
be in idle state part of the time.
The charge mode is effective in parallel with all previous modes. The charge mode itself
consists of two different states; i.e., the fast charge and the maintenance mode.
The local and test modes are used for alignment and testing.
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System Module CCS Technical Documentation
Figure 1: Interconnecting Diagram
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CCS Technical Documentation System Module
Engine Module
Environmental Specifications
Normal and extreme voltages
Voltage range:
• nominal battery voltage: 3.6 V
• maximum battery voltage: 4.2 V
• minimum battery voltage: 3.2 V
Temperature Conditions
Temperature range:
• ambient temperature: -30...+ 60o C
• PWB temperature: -30...+85o C
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System Module CCS Technical Documentation
Baseband Module
The core part of the RH-17 baseband module consists of three ASICs—UEM and UPP—
and flash memory. The following sections describe these parts.
UEM
UEM Introduction
UEM is the Universal Energy Management IC for DCT4 digital handportable phones. In
addition to energy management, it performs all the baseband mixed-signal functions.
Most of UEM pins have 2kV ESD protection. Those signals that are considered to be
exposed more easily to ESD have 8kV protection inside UEM. Such signals are all audio
signals, headset signals, BSI, Btemp, Fbus, and Mbus signals.
Regulators
UEM has six regulators for baseband power supplies and seven regulators for RF power
supplies. VR1 regulator has two outputs VR1a and VR1b.
Bypass capacitor (1uF) is required for each regulator output to ensure stability.
Reference voltages for regulators require external 1uF capacitors. Vref25RF is reference
voltage for VR2 regulator; Vref25BB is reference voltage for VANA, VFLASH1, VFLASH2,
VR1 regulators; Vref278 is reference voltage for VR3, VR4, VR5, VR6, VR7 regulators;
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CCS Technical Documentation System Module
VrefRF01 is reference voltage for VIO, VCORE, VSIM regulators, and for RF.
BB RF
VANA: 2.78Vtyp 80mAmax VR1a:4.75V 12mAmax
VR1b:4.75V 12mAmax
Vflash1: 2.78Vtyp 70mAmax
Vflash2: 2.78Vtyp
40mAmax
VSim: 1.8/3.0V 25mAmax VR3:2.78V 20mA
VIO: 1.8Vtyp
150mAmax
Vcore: 1.0-1.8V
200mAmax
VR2:2.78V 100mAmax
VR4: 2.78V 50mAmax
VR5: 2.78V 50mAmax
VR6: 2.78V 50mAmax
VR7: 2.78V 45mAmax
VANA regulator supplies internal and external analog circuitry of BB. It's disabled in
sleep mode.
Vflash1 regulator supplies LCD and digital parts of UEM ASIC. It is enabled during startup
and goes to low Iq-mode in sleep mode.
Vflash2 regulator is not used on RH-17. It could be enabled/disenabled through writing
register and default is off.
VIO regulator supplies both external and internal logic circuitries. It's used by LCD, flash,
Robin, Batman, and UPP. Regulator goes in to low Iq-mode in sleep mode.
VCORE regulator supplies DSP and Core part of UPP. Voltage is programmable and the
startup default is 1.5V. Regulator goes to low Iq-mode in sleep mode.
VR1 regulator uses two LDOs and a charge pump. This regulator is used by Robin RF ASIC
(VR1B) and synthesizer circuits (VR1A).
VR2 is a linear regulator used to supply Robin RF ASIC and the detector circuitry.
VR3 is a linear regulator used by Robin RF ASIC and VCTCXO circuitry.
VR4 is a linear regulator used by the PLL and UHF VCO circuitry.
VR5 is a linear regulator used by the Batman RFIC and the Alfred RF ASIC.
VR6 is a linear regulator used by Robin RF ASIC and TX LO buffer.
VR7 is a linear regulator used by Batman RF ASIC.
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System Module CCS Technical Documentation
IPA1 and IPA2 are programmable current generators. The 27k Ohm external resistor is
used to improve the accuracy of output current. IPA1 is used by lower band PA and IPA2
is used by higher band PA.
RF Interface
UEM handles the interface between the baseband and the RF section. It 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 UEM supplies the analog AFC signal to the RF section according to the
UPP DSP digital control. It also converts PA temperature into real data for the DSP.
Charging Control
The CHACON block of UEM asics controls charging. Needed functions for charging controls are pwm-controlled battery charging switch, charger-monitoring circuitry, battery
voltage monitoring circuitry and RTC supply circuitry for backup battery charging. In
addition, external components are needed for EMC protection of the charger input to the
baseband module. The DCT4 baseband is designed to electrically support both DCT3 and
DCT4 chargers.
Digital Interface
Data transmission between the UEM and the UPP is implemented using two serial connections, DBUS (9.6 MHz) for DSP and CBUS (1.2 MHz in CDMA) for MCU. UEM is a dualvoltage circuit: the digital parts are running from 1.8V and the analog parts are running
from 2.78V. Vbat (3,6V) voltage regulators inputs also are used.
Audio Codec
The baseband supports two external microphone inputs and one external earphone output. The inputs can be taken from an internal microphone, from 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 to total distortion ratio.
Input and output signal source selection and gain control is performed inside the UEM
ASIC according to control messages from the UPP. Both a buzzer and an external vibra
alert control signals are generated by the UEM with separate PWM outputs.
UI Drivers
There is a single output driver for buzzer, vibra, display, and keyboard LEDs inside UEM.
These generate PWM square wave to devices.
AD Converters
There is an 11-channel analog-to-digital converter in UEM. The AD converters are calibrated in the production line.
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BB-RF Interface Connections
All the signal descriptions and properties in the following tables are valid only for active
signals.
Table 1: PDM Interface
Signal name From To Parameter Min Typ Max Unit Function
RX_IF_AGC UPP
GenIO 9
TX_IF_AGC UPP
GenIO 7
TX_RF_AGC UPP
GenIO 26
PA_GAIN UPP
GenIO 11
Signal
name
From To Parameter Input characteristics Function
Batman Voltage Min
Max
---------------Clk Rate
Robin Vo ltage Min
Max
---------------Clk Rate
Robin Vo ltage Min
Max
---------------Clk Rate
Robin Vo ltage Min
Max
---------------Clk Rate
(1)
0.0
1.75
--------
(1)
0.0
1.75
-------
0.0
1.75
--------
(3)
0.0
1.75
--------
(3)
Table 2: General I/O Interface
1.8
------
9.6
1.8
-------
9.6
1.8
--------
9.6
1.8
--------
9.6
0.1
1.86
-------
19.2
0.1
1.86
--------
19.2
0.1
1.86
--------
19.2
0.1
1.86
--------
19.2
V
-------MHz
V
-------MHz
V
-------MHz
V
-------MHz
Controls gain of VGA r
in receiver
Controls gain of VGA
in IF VGA in Robin
Controls gain of TX
driver in Robin
Controls gain of PA
TX_Gate UPP
Gen IO 8
pullup
PA_Boost UPP
Gen IO 03
pullup
FAST_AGC UPP
Gen IO 13
pullup
SYNTH_LE UPP
Gen IO 25
pullup
Robin “1” Transmitter Off
“0” Transmitter On
Timing Accuracy
Snapper
Shark
Robin “1” AMPS mode
Synthesizer
“1” boost mode
“0” data mode
Timing Accuracy
“0” CDMA mode
“1” Enable
“0” Disable
1.38 1.88 V
0 0.4 V
4 chips, and can be up
to a total of 255 chips
1.38 1.88 V
0 0.4 V
4 chips, and can be up
to a total of 255 chips
1.38 1.88 V
0 0.4 V
4 chips, and can be up
to a total of 255 chips
1.38 1.88 V
0 0.4 V
4 chips, and can be up
to a total of 255 chips
Punctures the PA’s and
the Robin ASIC
Digital Into RF
Sets PA current for
desired linearity
Digital Into RF
Sets phone mode of
operation AMPS or
CDMA
Digital into RF
Latch enable for synthesizer
Digital into RF
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