This document is intended for use by qualified service personnel only.
Company Policy
Our policy is of continuous development; details of all technical modifications will be
included with service bulletins.
While every endeavour has been made to ensure the accuracy of this document,
some errors may exist. If any errors are found by the reader, NOKIA MOBILE PHONES
Ltd should be notified in writing.
Please state:
Title of the Document + Issue Number/Date of publication
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Page(s) and/or Figure(s) in error
Please send to: Nokia Mobile Phones Ltd
PAMS Technical Documentation
PO Box 86
FIN-24101 SALO
Finland
Page 4ãNokia Corporation.Original
NPE-4
PAMS Technical DocumentationForeword
Warnings and Cautions
Please refer to the phone's user guide for instructions relating to operation, care and
maintenance including important safety information. Note also the following:
Warnings:
1. CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED WITH
ELECTRONIC ENGINE MANAGEMENT SYSTEMS AND ANTI-SKID BRAKING
SYSTEMS. UNDER CERTAIN FAULT CONDITIONS, EMITTED RF ENERGY
CAN AFFECT THEIR OPERATION. IF NECESSARY, CONSULT THE VEHICLE
DEALER/MANUFACTURER TO DETERMINE THE IMMUNITY OF VEHICLE
ELECTRONIC SYSTEMS TO RF ENERGY.
2. THE HANDPORTABLE TELEPHONE MUST NOT BE OPERATED IN AREAS
LIKELY TO CONTAIN POTENTIALLY EXPLOSIVE ATMOSPHERES EG PETROL
STATIONS (SERVICE STATIONS), BLASTING AREAS ETC.
3. OPERATION OF ANY RADIO TRANSMITTING EQUIPMENT, INCLUDING
Cautions:
1. Servicing and alignment must be undertaken by qualified personnel only.
2. Ensure all work is carried out at an anti-static workstation and that an
3. Ensure solder, wire, or foreign matter does not enter the telephone as
4. Use only approved components as specified in the parts list.
5. Ensure all components, modules screws and insulators are correctly re-
CELLULAR TELEPHONES, MAY INTERFERE WITH THE FUNCTIONALITY OF
INADEQUATELY PROTECTED MEDICAL DEVICES. CONSULT A PHYSICIAN
OR THE MANUFACTURER OF THE MEDICAL DEVICE IF YOU HAVE ANY
QUESTIONS. OTHER ELECTRONIC EQUIPMENT MAY ALSO BE SUBJECT TO
INTERFERENCE.
anti-static wrist strap is worn.
damage may result.
fitted after servicing and alignment. Ensure all cables and wires are
repositioned correctly.
OriginalãNokia CorporationPage 5
NPE-4
ForewordPAMS Technical Documentation
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Page 6ãNokia Corporation.Original
Programmes After Market Services
NPE-4 Series Cellular Phones
1 - General Information
Original ãNokia Corporation.Page 1-1
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1 - General InformationPAMS Technical Documentation
Table of Contents
DescriptionPage No.
The Product ........................................................................................................................................3
Figure 1Exploded view of NPE-4 ...........................................................................................5
List of Tables
Table 1List of main components .........................................................................................5
Page 1-2ãNokia Corporation.Original
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PAMS Technical Documentation1 - General Information
The Product
The NPE-4 (Nokia 6310) is a dual band handportable mobile telephone for the E-GSM
900 and GSM 1800 networks, automatically switching between bands. It is both GSM
900 phase 2 power class 4 transceiver (2W) and GSM 1800 power class 1 (1W) transceiver.
The NPE-4 (Nokia 6310) has additional features as defined below:
=
Integrated Bluetooth
=
Wallet for mobile commerce
=
GPRS (General Packet Radio Service)
=
WAP including the new version 1.2.1
=
Voice commands and recording features
Technical specification
General Specifications of NPE-4
Temperature range-10C to +55C
Size (L x W x D)129 x 47 x 17 ... 21 mm
Weig ht111 g
Display96 x 65 pixels
=
PC suite version 4.5
=
To-do list
=
Stopwatch
=
Countdown Timer
=
Games
Volume97 cc
Standard batteryBPS-2 1100 mAh, Li-Polymer
Standby TimeUp to 18 days (without Bluetooth and GPRS being activated)
Talk time3 h - 5 h 30 min
Operating timeVariation will occur depending on SIM card, network and
usage settings, style and environments.
Bluetooth module will consume power when turned on,
reducing the phone’s operating times.
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1 - General InformationPAMS Technical Documentation
PAMS Technical Documentation1 - General Information
Figure 1 Exploded view of NPE-4
Table 1: List of main components
ItemDescriptionNMP code
01
02a
02b
02c
03
04
05
Logo Badge 9430274
A-cover Assembly Jet Black
A-cover Assembly Sirocco Bronze9452191
A-cover Assembly Mistral Beige9452190
Keymat 979........
Speaker
Buzzer Assembly5140209
9451928
5140233
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Table 1: List of main components
ItemDescriptionNMP code
06
07
08
09a
09b
09c
09d
10
11
Integrated BLUETOOTH
Bluetooth is a global standard for wireless connectivity. Bluetooth technology is based
on a low-cost, short-range radio link that operates in the globally available ISM (Industrial Scientific Medical) frequency band at 2.4 GHz.
As a widely adopted open standard, Bluetooth is intended for use in mobile phones, laptops, printers, digital cameras and other devices.
Lightguide Assembly, 4850163
Microphone + Boot Assembly5140225
Antenna – Internal Antenna Plated0660231
B-cover Assembly9458087
Sim slide9510467
On/off key9790412
Volume key9790385
Screw M1.6 x 5.56150025
Battery BPS-20670354
Bluetooth in the NPE-4 (Nokia 6310)
The integrated Bluetooth module (containing a Bluetooth transmitter and receiver)
allows the user to connect wirelessly to other Bluetooth devices within a range of 10
meters. The main uses of the Bluetooth module in the NPE-4 (Nokia 6310) are:
•Synchronisation of phonebook and calendar information between the NPE-4
(Nokia 6310) and a compatible PC. Calendar synchronisation works between the
phone and, for example, Microsoft Outlook or Lotus Notes using Nokia PC Suite.
•Wireless data (dial-up) connections. Laptop users can access the Internet and
handle e-mail by connecting the laptop to a computer network via Bluetooth and
the NPE-4 (Nokia 6310). The phone will work as a wireless modem.
•Wireless audio based on Bluetooth, allowing users to be wireless with Nokia
Bluetooth audio accessories (headset and car kit).
•Sending of business cards and calendar notes to e.g. another NPE-4 (Nokia 6310).
WALLET
The new wallet feature in the NPE-4 (Nokia 6310) enables users to make on-line transactions via a WAP browser, using your credit card to pay for books and tickets, for instance.
The wallet is a password-protected "locker" in your phone containing your credit card
information and other private information. When you want to buy something via WAP
and are asked for your credit card data, you only need to select wallet and give your
password, instead of keying in all of the information manually.
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Benefits
•Fast, convenient and secure on-line transactions via WAP
•Secure storage for your personal information inside the phone, e.g. for user
names, passwords and numbers
•Protected storage inside the phone using the Wallet code for access
•Easy-to-use
•One step towards a Personal Trusted Device
GPRS (GENERAL PACKET RADIO SERVICE)
Mobile on-line
GPRS is a new feature in the existing GSM network. GPRS sends and receives your data
in ’packets’ - small packages of data that are sent across the network and then reassembled at the destination.
GPRS is different from traditional circuit switched services because the information is
broken down into IP (Internet Protocol) packets. IP Packet data is more efficiently routed
across the network and uses less network resources, which reduces the cost to the end
user.
GPRS enables users to have an always online mobile access to operator services and the
Internet. The main use for GPRS in the beginning will be as a bearer for WAP services, but
GPRS can also be used for data (dial-up) connections and for SMS messaging.
The charging (billing) will be based on how much data you send and receive and not on
how long time you have been connected.
Benefits with GPRS
•you can be always online
•data are more efficiently routed across the network
•you are charged according to the amount of data that you send and receive
•immediate access to WAP services
Before you can use GPRS
•you need to subscribe to GPRS (for availability and subscription to GPRS, contact
your network operator or service provider)
•set up your phone and/or PC to use GPRS
GPRS data speeds
The data transfer speed of a GPRS connection can (at the moment) be up to 40.2 kbps.
The speed depends on the network capacity and may change from moment to moment.
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Comparisons: Normal WAP connection: 9.6 or 14.4 kbps
Normal GSM data conn.:9.6 or 14.4 kbps
High speed data conn.:up to 43.2 kbps
GPRS WAP connection:up to 40.2 kbps
GPRS data connection:up to 40.2 kbps
WAP
WAP IN THE NPE-4 (Nokia 6310)
The WAP feature in the NPE-4 (Nokia 6310) is very much like the WAP feature seen in
previous Nokia phones like the Nokia 6210. Main differences are
•GPRS - a new feature that can be used as a data bearer for WAP
•The WAP version is new (version 1.2.1) and it includes new functions
THE NEW FEATURES IN WAP
Push Service message indicator
The NPE-4 (Nokia 6310) can receive a service message with a short header and a link to
a specific WAP service. The type of messages that you want to subscribe to can be
selected from operators or service providers according to personal interest.
WAP push messages are stored in a dedicated service inbox. This inbox is found in the
Services menu. While online, the service inbox is found under the Options. You can anytime connect to the link that is included in a service message.
When a new WAP push message (with priority high or medium) is received, a notification
"New service message received" is displayed. You can read the message or discard the
notification. You can save 10 messages in the service inbox.
WAP push message is automatically removed from the service inbox when expiry time
(set by the content provider) is reached.
Direct calling (WTAI - Wireless Telephony Applications Interface)
WTAI enables interaction between the WAP browser and other parts of the mobile
phone. For example it will be possible to call directly from a phone book on a WAP page
by selecting the number to call. The WAP page must be designed to support this feature.
Cookies
Works similarly to the Internet cookies. A server can store a text-string in the phone,
making it possible for a WAP-service to recognise the user from time to time, creating a
more personal and easier browsing. The NPE-4 (Nokia 6310) has memory for 20 cookies,
that will be outdated starting from the last used ones.
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Downloadable Calendar (vCal) and Contact (vCard) items
Calendar appointments and business cards can be saved to the phone’s calendar or
phone book. E.g. while browsing you can select a calendar event or a business card on a
WAP page to be saved into the phone’s memory.
Direct editing
When the cursor is on top of a link to an input box, pressing the numeric keypad will
immediately start inputting into the editor. There is no need to press the select key to get
to the editor.
Voice commands and recording features
The voice features have been extended with voice commands and a voice recorder.
With voice commands you can operate up to five features (e.g. change profile) by speaking a voice tag of your choice.
The NPE-4 (Nokia 6310) has a voice recorder that can hold a total of 3 minutes of
recordings. The recorder can e.g. be used for making spoken memos.
For voice dialling ten phone numbers in the phone book can have a voice tag attached.
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UPP (Universal Phone Processor) ........................................................................................19
Bluetooth ...................................................................................................................................21
Ul ..................................................................................................................................................21
Test Points ..........................................................................................................................................53
This Chapter specifies the baseband module for the NPE-4 program. The baseband module includes the baseband engine chipset, The UI components and the acoustical parts
for the transceiver.
NPE-4 is a hand-portable GSM900/GSM1800 phone for the classic segment, having the
DCT4 generation baseband- and RF circuitry. The key drivers for this product are GPRS
data transmission and short time to market.
The mechanical solution is based on the NPE-3 phone, modified with a new A-cover
design. The acoustical design is very similar to that implemented in NPE-3.
NPE-4 is having the DCT3 system connector and supports accordingly most DCT3 accessories. The battery interface is the one known from DCT3 phones and NPE-4 will support
both Nickel- and Lithium batteries.
New features in NPE-4 project is Bluetooth wireless data and audio connection and
GPRS for TCP/IP protocol data transmission.
Abbreviations
BSIBattery Size Indicator
NO_SUPPLYUEM state where UEM has no supply what so ever
VBATMain battery voltage
V
VBACKBackup battery voltage
V_BU
BACK_UPUEM state where UEM has backup voltage
RESETUEM state where regulators are enabled
RTCUEM internal Real Time Clock
VRTCRegulator voltage for RTC
PWR_OFFUEM state where phone is off
SLEEPUEM power saving state controlled by UPP
SLEEPXSLEEP control signal from UPP
PWRONXSignal from power on key. '1' = key pressed.
VCHARCharger input voltage
MSTR+
COFF+
, V
MSTR-
, V_BU
COFF-
Master Reset threshold level (2.1 V / 1.9 V)
Backup battery threshold level (3.1 V / 2.8 V)
VCHAR
DET
Charger detection threshold level
UEMUniversal Energy Management
UPPUniversal Phone Processor
IMDIn-Mould Decoration
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Technical Summary
PA Supply
RF Supplies
RF RX/TX
IRDA
EAR
MIC
BUZZO
VIBRA
M
Battery
UEM
Baseband
DLIGHT
KLIGHT
SLEEPCLK
32kHz
BB
Supplies
MBus/FBus
External Audio
Charger connection
CBUS/
DBUS
UI
UPP
MEMADDASIMIF
SIMFLASH
13MHz
HAGAR
26MHz
CBUS
USART
Bluetooth
DCT3 System connector
Figure 1 NPE-4 baseband block diagram
A draft block diagram is shown in Figure 1 NPE-4 baseband block diagram.
The baseband module contains 2 ASICs namely the Universal Energy Management (UEM)
and the Universal Phone Processor (UPP). The baseband module furthermore contains the
Bluetooth module. The baseband is based on the DCT4 engine program.
The UEM supplies both the baseband module as well as the RF module with a series of
voltage regulators. The RF module is supplied with regulated voltages 4.75 V and 2.78 V
and the baseband module with 2.78 V and 1.80 V. The UEM is furthermore supplying the
baseband SIM interface with a programmable voltage of either 1.8 V or 3.0 V and the
core of the UPP is supplied with a programmable voltage of 1.0 V, 1.3 V, 1.5 V or 1.8 V.
The UEM contains a series of PWM sourced drivers. The individual PWM signals are generated internally within the digital part of the UEM and distributed to the drivers. The
Page 2-6ãNokia Corporation.Original
NPE-4
PAMS Technical Documentation2 - Broadband System
buzzer driver receives a PWM signal where both frequency and duty-cycle are pre-set by
register writings. For the vibra, a set of frequencies can be chosen. The frequencies are 64
Hz, 128 Hz, 258 Hz and 520 Hz and the duty cycle 2.9 % to 96.9 %. LCD and keyboard
light LED drivers receive a PWM signal of 128 Hz where the duty-cycle can be programmed by setting a 4-bit register.
The UEM also contains an IR driver supporting 9600 bps to 1152 kbps, semi duplex. This
driver works as a level shifter on the RX and TX lines to and from the UPP.
The UEM contains a real-time clock sliced down from the 32768 Hz crystal oscillator. The
32768 Hz clock is fed to the UPP as a sleep clock.
The communication between the UEM and the UPP is done on the bi-directional CBUS
and DBus. The CBUS is controlled by the MCU and can operate at a speed of maximum 1
MHz. The DBus is controlled by the DSP and can operate at a maximum speed of 13 MHz.
Both processors are located in the UPP.
Environmental Specifications
Absolute maximum ratings
Table 1: Absolute maximum ratings
ParameterRatingRemarks
Supply voltage, VBAT-0.3 V - 5.5 VDCSupply voltage for UEM
Charger input voltage, VCH-0.3 V - 16 VDCConditions set by UEM. Input
clamped @16 VDC.
, Hardware cut-off voltage)
, Upper charger limit)
Normal and extreme voltages
Nominal voltage:3.6 V (VBAT, Main battery voltage)
The baseband module will comply with the SPR4 Operating Conditions.
Vibration and bump
The baseband module will comply with the SPR3 Mechanical Functionality.
EMC / ESD immunity
The baseband module will comply with the SPR4 Operating Conditions. See also baseband EMC strategy in section Baseband EMC Strategy on page Baseband EMC Strategy.
Technical Specifications
0 °C … +40 °C
Specifications fulfilled
Operational for short periods only
No storage. An attempt to operate may
damage the phone permanently
Condition is without battery
The following chapters describe the NPE-4 baseband module in overview. If further information is needed, check with the references at the end of the Specification section References and/or with references mentioned in the individual chapters.
UEM
The UEM is one of the two ASICs in the baseband module.
Reset sequence
The functional behaviour of the UEM can be divided into 7 different states. Since the
UEM controls the regulated power distribution of the phone, each of these states affects
the general functionality of the phone:
•No supply
•Backup
•Power off
•Reset
•Power on
•Sleep
•Protection
Page 2-8ãNokia Corporation.Original
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PAMS Technical Documentation2 - Broadband System
Figure 2 UEM state diagram
OriginalãNokia Corporation.Page 2-9
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2 - Broadband SystemPAMS Technical Documentation
The text below explains the state diagram. The symbol 'ä' means that the voltage rises
and 'æ' that the voltage drops. '®' Means the result of the conditions set on the left
most side.
VBAT < V
VBAT < V
VBAT ä V
VBAT > V
VBAT ä V
and VBACK > V_BU
MSTR
and VBACK < V_BU
MSTR
. VBACK < V_BU
MSTR+
. DELAY1 elapses ® Go to RESET
MSTR
. VBACK > V_BU
MSTR+
COFF
COFF
PWRONX = '0' or VCHAR ä VCHAR
VBAT > V
® Go to DELAY2
COFF+
DELAY2 elapses ® Go to DELAY3
VBAT > C
. DELAY3 elapses ® Go to DELAY4
OFF+
DELAY4 elapses ® Go to PWR_ON
SLEEPX = '0' ® Go to SLEEP
SLEEPX = '1' ® Go to PWR_ON
® Go to BACK_UP
COFF
® Go to NO_SUPPLY
COFF
® Go to DELAY1
® Go to DELAY1
or ALARM = '1' ® Go to DELAY1
DET+
VBAT æ V
No change
VBAT > V
PWRONX ä detection during DELAY2 ® Go to PWR_OFF
Watchdog elapses (approx. 100 ms) ® Go to PWR_OFF
Thermal shutdown ® Go to PWR_OFF
PwrKeyWatchdog (4 sec.) elapses ® Go to PWR_OFF
The different states of the UEM are explained further below:
No supply
In the NO_SUPPLY mode the UEM has no supply voltage (VBAT < V
V_BU
tery is either disconnected or both discharged to a low voltage level.
The UEM will recover from NO_SUPPLY into RESET mode if the VBAT voltage level rises
above the V
and VBAT > V
COFF-
® Stay in PWR_OFF
MSTR
). This mode is due to the fact, that both the main battery and the backup bat-
COFF-
level by either reconnecting the main battery or charge it to such level.
MSTR+
® Go to PWR_OFF
MSTR-
and VBACK <
MSTR
Page 2-10ãNokia Corporation.Original
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PAMS Technical Documentation2 - Broadband System
Backup
In BACK_UP mode the main battery is either disconnected or has a low voltage level
(VBAT < V
and VBACK > V_BU
MSTR-
COFF+
).
The regulator VRTC that supplies the real time clock is disabled in BACK_UP mode.
Instead the unregulated backup battery voltage VBACK supplies the output of the VRTC.
All other regulators are disabled and the phone has no functionality.
The UEM will recover from BACK_UP mode into RESET mode if VBAT rises above V
Power off
In order for the UEM to be in PWR_OFF mode, it must have supply voltage (VBAT >
V
The regulator VRTC regulator is enabled and supplying the RTC within the UEM. The UEM
will enter RESET mode after a 20 ms delay whenever one of the below listed conditions is
logically true:
The UEM will enter PWR_OFF from all other modes except NO_SUPPLY and BACK_UP if
the internal watchdog elapses.
Reset
).
MSTR+
•The power button is activated
•Charger connection is detected
•RTC alarm is detected
MSTR+
.
When the UEM enters RESET mode from PWR_OFF mode the watchdog is enabled. If the
VBAT fails to rise above the power-up voltage level V
elapses, the UEM will enter PWR_OFF mode. Otherwise after a 200 ms delay the regulator VFLASH1 will be enabled and after a additional delay of 500 ms the regulators VANA,
VIO, VCORE and VR3 will be enabled. All other regulators i.e. VFLASH2, VSIM, VR1, VR2
and VR4 – VR7 are software controlled and disabled by default. After an additional delay
of 20 ms the UEM enters PWR_ON mode.
Power on
In PWR_ON the UEM is fully functional in the sense that all internal circuits is powered
up or can be by means of software. The UEM will enter PWR_OFF mode if VBAT drops
below V
PWR_OFF mode if either of the watchdogs Operational State Machine (approx. 100 ms),
Security (32 sec.) or Power Key (4 sec.) elapses or if any of the regulators triggers the
thermal protection circuitry
Sleep
The UEM can be forced into SLEEP mode by the UPP by setting the input SLEEPX low for
more than 60 ms. This state is entered when the external UPP activity is low (phone in
(3.1 V) before the watchdog
COFF+
for a period of time longer than 5 ms. The UEM will furthermore enter
COOF-
OriginalãNokia Corporation.Page 2-11
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2 - Broadband SystemPAMS Technical Documentation
sleep) and thereby lowering the internal current consumption of the UEM. The regulator
VANA is disabled and VR1 – VR7 are either disabled or in low quiescent mode.
From SLEEP the UEM enters PWR_ON if SLEEPX goes high, PWR_OFF mode if watchdog
elapses or BACK_UP mode if VBAT drops below V
MSTR-
.
Protection mode
The UEM has two separate protection limits for over temperature conditions, one for the
charging switch and one for the regulators. The temperature circuitry measures the onchip temperature. In case of charging over temperature, the circuit turns the charging
switch off. In case of over temperature in any of the regulators, the UEM powers off.
DC characteristics
The figures in the following table reflect the specifications of the voltage and current
regulators within the UEM.
Table 3: UEM regulator outputs and state in sleep
RegulatorTar getOutput Voltage [V]Output Current [mA]
MinTypMaxMinMax
VR1A, VR1BRF4.64.754.9010Off
6
VR2
VR3RF2.702.782.860.120Off
2
VR4
VR5, VR6
VR7RF2.702.782.860.145Off
VrefRF01RF1.3341.351.366-0.1On
VrefRF02
VIO
VSIM
VANABB2.702.782.860.00580Off
VCORE
VFLASH1BB2.702.782.860.005
VFLASH2
2
1
2
2
3
5
RF2.702.782.860.1100Off or Low Iq
RF2.702.782.860.150
0.1
RF2.702.782.860.150
0.1
RF1.3231.351.377-0.1On or Off
BB1.721.81.880.005
0.005
BB1.745
2.91
BB1.000
1.235
1.425
1.710
0.974
1.215
1.410
1.692
BB2.702.782.860.00540On or Off
1.8
3.0
1.053
1.3
1.5
1.8
1.053
1.3
1.5
1.8
1.855
3.09
1.106
1.365
1.575
1.890
1.132
1.365
1.575
1.890
0.005
0.005
0.005
0.005
0.005
0.005
70
85
100
120
0.005
150
0.500
25
0.500
70
85
100
120
200
200
200
200
70
1.5
UEMSLX = '0'
Off
Off
Low Iq
Low Iq
Low Iq
Low Iq
4
Page 2-12ãNokia Corporation.Original
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1)Controlled by MCU writing to UEM references register.
2)The second current value indicates the maximum possible output current of the
regulator when in low quiescent mode.
3)The output voltages are split into two different current categories. The upper part
is the lower range of output current, and the lower part is the higher range of
output current.
4)UEMSLX is slave to SleepX from the UPP. Sets the UEM into sleep mode.
5)Condition in sleep-mode depends on MCU writings to UEM regulator registers
solely.
6)Condition in sleep-mode depends on DSP writings to UEM register.
Due to the low output current from the VFLASH1 regulator during sleep, the following
table with estimated current consumption drawn from the regulator in sleep mode was
made.
Table 4: NPE-4 current consumption from VFLASH1 during Sleep mode
ConsumerMax current
1
LCD
Audio area
- XMIC
- XEAR
- DLR-3P
Bluetooth8
UEM
- 2 x slow ADC
- BSI
IR5
Total482
376mAAll figures are estimates @25 °C
60
1
1
2
29
Unit
Note
1) Maximum current measured on 10 samples.
The current consumed by the LCD has been measured by vendor using worst case normal
mode displayed image as shown in Figure 3.
Figure 3 LCD worst case test image
OriginalãNokia Corporation.Page 2-13
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Under normal conditions, the battery powers the baseband module. The battery voltage
VBAT is regulated by individual regulators located within the UEM. These regulators supply the different parts of the phone. 8 regulators are dedicated to the RF module of the
phone, and 6 to the baseband module.
The VSIM regulator is able to deliver both 1.8 and 3.0 Vdc and thus supporting two different SIM technologies. A register internally in the UEM controls the output of VSIM
and can be written to by the MCU via the CBUS. The regulator VCORE is likewise adjustable and controlled by register writings by the MCU. VCORE supplies the core of the UPP
and can be adjusted on the fly by the MCU if DSP capacity is inadequate. Higher VCORE
supply (1.8 V) results in faster core operations in the UPP.
The regulator VFLASH2 supplies audio circuitry and is controlled by the MCU
The regulators VANA, VFLASH1 and VIO are solely controlled by the UEM and cannot be
en-/disabled by MCU writings. Furthermore, VFLASH1 and VIO are both ON, though in
low quiescent mode when the phone is in sleep mode. An output current of 500 mA can
be drawn from the VIO regulator and 1.5 mA from the VFLASH1 regulator. VIO supplies
the UPP, FLASH and LCD, VFLASH1 supplies LCD, DLR-3 cable, IRDA and the Bluetooth
module. VANA is supplying analogue parts internally in the UEM as well as the baseband
audio circuitry and pull-up resistors on the input of the UEM slow AD converters.
When the plug and play DLR-3 cable is connected to the phone, it must be supplied by
the phone with 2.78 Vdc / 25 mA. This is delivered via a switch from VFLASH1. The switch
is controlled by the MCU and the control signal originates from a general IO pin on the
UPP.
The regulators VR1A, VR1B, VR2 – VR7 and IPA1 – IPA4 are all controlled by the DSP via
the DBus. VR3 – VR7 are controlled by the UEM as well and are disabled in sleep regardless of DSP writings.
VBAT is furthermore distributed, unregulated, to the RF power-amplifier and the BT102
Bluetooth module as well as filters in the baseband module.
The CHACON module in the UEM controls the charging of the main battery. Furthermore
it contains a 3.2 Vdc regulator for charging of the backup battery and a 1.8 Vdc regulator
supplying the internal real time clock.
Page 2-14ãNokia Corporation.Original
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