Benefon Dragon Operation Manual
Product: TDP70WN /
5.9.2000
SERVICE MANUAL
Dp_70ngbTOC.fm
BENEFON DRAGON
TDP70WN
1
Product: TDP70WN /
5.9.2000
CONTENTS
1.0 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1 TECHNICAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1.1 Operational System . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1.3 Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1.4 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1.5 Alert Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1.6 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
1.1.7 Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
1.1.8 Auto Answer; Pager/Hands Free . . . . . . . . . . . . . . . . 1 - 2
1.1.9 Other Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
1.1.10 Additional Exchange-Based Features . . . . . . . . . . . . 1 - 3
1.1.11 Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 3
1.2 PRODUCT FAMILY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 4
2.0 OWNER’S MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
3.0 INSTALLATION INSTRUCTIONS . . . . . . . . . . . . . . . 3 - 1
3.1 Phone Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
3.1.1 Programming Subscriber ID in Dragon . . . . . . . . . . . . 3 - 1
3.1.2 To program Using the Phone Keys . . . . . . . . . . . . . . . 3 - 2
3.1.3 To program Using the BeneLoc Program . . . . . . . . . . 3 - 3
4.0 BeneLoc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
4.0.1 Installation of BeneLoc program . . . . . . . . . . . . . . . . . 4 - 1
4.0.2 To start the BeneLoc program . . . . . . . . . . . . . . . . . . 4 - 2
5.0 PHONE’S CONSTRUCTION . . . . . . . . . . . . . . . . . . . . 5 - 1
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4.0.3 Using the BeneLoc program . . . . . . . . . . . . . . . . . . . . 4 - 3
5.1 PROCESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 2
5.1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 2
5.1.2 Connectors: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 2
5.1.3 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 4
5.2 AUDIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 7
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Product: TDP70WN /
5.9.2000
5.2.1 Function Description . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 7
5.2.2 TX-audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 7
5.2.3 RX-Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 8
5.2.4 FII Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 8
5.2.5 FFSK Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 9
5.2.6 The DTMF Generator/Receiver . . . . . . . . . . . . . . . . . 5 - 9
5.2.7 Signal level detectors . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 9
5.2.8 Compander/Expander . . . . . . . . . . . . . . . . . . . . . . . . 5 - 10
5.2.9 Alarm buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 10
5.2.10 The other in audio asic (I7) . . . . . . . . . . . . . . . . . . . 5 - 10
5.2.11 Scrambler (optional) . . . . . . . . . . . . . . . . . . . . . . . . 5 - 10
5.3 RX SYNTHESIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 11
5.3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 11
5.3.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . 5 - 11
5.3.3 Control- and Output-Signals . . . . . . . . . . . . . . . . . . . 5 - 11
5.4 TX-SYNTHESIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 12
5.4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 12
5.4.2 Function Description . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 12
5.4.3 Control- and Output-Signals . . . . . . . . . . . . . . . . . . . 5 - 13
5.5 RECEIVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 13
5.5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 13
5.5.2 Input- and Output-Signals . . . . . . . . . . . . . . . . . . . . . 5 - 14
5.6 TRANSMITTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 15
5.6.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 15
5.6.2 Function Description . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 15
5.6.3 Control- and Output-Signals . . . . . . . . . . . . . . . . . . . 5 - 15
5.7 Module OC2285 (The Layout PC2200 A5) . . . . . . . . . . . . . 5 - 18
5.7.1 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 18
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5.7.2 Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 28
5.7.3 Circuit Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 30
5.8 Module OC2295 (The Layout PC2200 A5) . . . . . . . . . . . . . 5 - 38
5.8.1 Parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 38
5.8.2 Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 48
5.8.3 Circuit Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 50
5.9 KEYBOARD OK2200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 58
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1.0 GENERAL
General
1.1 TECHNICAL INFORMATION
1.1.1 Operational System
NMT-450i
1.1.2 Dimensions
Size: 56 x 125 x 25 mm
Weight: 178 g
Product: TDP70WN / General
5.9.2000
Vo lum e: 13 9 cm³
1.1.3 Power Consumption
- Batteries: 3x 1.2 V NiMH
- Sleep current: 600 µA
- Standby current: 43 mA
- Conversation mode, high power: app. 1.1 A
- Conversation mode, low power: app. 0.45 A
Charger:
- automatic 1 h rapid charging for NiMH batteries
- automatic 6 h standard charging for NiMH batteries
1.1.4 Accessories
- light holder
- portable hands free
- mains charger
- cigarette lighter charger
- belt clip
1.1.5 Alert Functions
Adjustable ringing tones
- type
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- volume
- progressive or fixed
Silent alert
- short tone and ‘call is coming’ text in the display
1.1.6 Memory
Alphanumeric
- 300 memory locations, 23 characters, 1 6 alphanumeric / memory location
- memory scroll and recall in alphabetical or numerical order
- writing in memory during a call
Repeat: last dialled number or one of 15numbers from the quick-memory locations
Product: TDP70WN / General
5.9.2000
1.1.7 Clock
- time and date display
- real time alarm setting
- real time power on setting
- real time power off setting
- elapsed conversation time counter (both incoming and outgoing)
- received call counter and time display
1.1.8 Auto Answer; Pager/Hands Free
- pre-set number of ring tones before answering (0...6)
Pager
- answers incoming calls and receives numeric messages
- 15memory locations (23 characters / location)
Hands Free
- answers incoming calls when connected to portable HF
1.1.9 Other Functions
DTMF - receiver / transmitter
DTMF - key tones
Display and key illumination
Volume control
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Product: TDP70WN / General
5.9.2000
- 5 levels
- level indicator
Battery charge level indicator
- battery empty alarm tone and display
- used battery capacity display
Field strength indicator
Battery-saving function
Prefix editor
Keys lockable to prevent accidental operation
Phone code to prevent una u thorised use
SIS protection function
CLIP, calling line identity presentation
‘+’ international prefix
1.1.10 Additional Exchange-Based Features
Call management
- New call
- Pick incoming call
- Select call
MFT-function (DTMF signal transmission)
Voice privacy (also manual voice privacy)
SMS
1.1.11 Manufacturer
Benefon Oyj
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P.O. Box 84
24101 Salo
Finland
Tel. +358 2 77400 Fax. +358 2 7332633
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1.2 PRODUCT FAMILY
- BENEFON DRAGON HANDPORTABLE TDP70WN
- STANDARD MAINS CHARGER CSA-70-230
- QUICK MAINS CHARGER CMA-70-230
- CIGARETTE LIGHTER CHARGER CCS-70-12
- LIGHT HOLDER KDC-70
- PORTABL E HAND S FREE EHS-60
- BELT CLIP
Product: TDP70WN / General
5.9.2000
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2.0 OWNER’S MANUAL
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Product: TDP70WN / Installation Instructions
5.9.2000
3.0 INSTALLATION INSTRUCTIONS
Installation Instructions
3.1 Phone Programming
You can program Benefon Dragon by using either the keys on your phone, or
the BeneLoc computer program and maintenance adapter. In either case, you
will need a localbox.
Programming Menu Commands:
- SALES DATE
- RADIO PATH ID
- OWN NUMBER
- PHONE CODE
- Y1 Y3 ID (additional operator indicator)
- SW VERSION
- SAK
- PRODUCT CODE
- UPDATE LOCALBOX
- INTERLEAVING
- AUTOMATIC ROAMING
- RESET RAM
3.1.1 Programming Subscriber ID in Dragon
3.1.1.1 How to program the ID in Dragon:
1. Turn on the Dragon normally with its own battery.
2. Hook up the rapid charger until it the phone indicates that it has started
charging.
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3. Remove the battery and watch that the display shows an empty battery
frame.
4. Hook the localbox adapter up to the localbox via the Spica cable, and then
attach it to the phone where the battery would normally go.
5. Restart the Dragon.
6. You can get to the ***BENEFON*** menu with the arrow key. Select it, and
from there you will find "Radio Path ID", where you can program the ID of the
phone.
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Product: TDP70WN / Installation Instructions
5.9.2000
3.1.2 To program Using the Phone Keys
1. Connect the QPS50 localbox via maintenance adapter to your phone, and
turn the phone on. , will be flashing in the display in stand-by mode.
2. Press and the following text wi ll appear in the displa y: ***BENEFON***.
3.1.2.1 Sales Date
1. Choose SELECT. The following text will appear in the display:
SALES DATE [XXXXXX].
2. Choose CHANGE. [XXXXXX] will be replaced by the date
[daydaymonthmonthyearyear]. Remember to check that the date is correct.
If the date is correct, choose
choosing
daydaymonthmonthyearyear). To save the date, choose
and enter the correct date (six digits in the following form:
SAVE. If the date is incorrect, delete it by
SAVE.
It is possible to program the sales date ONLY ONCE, which means that you
will not be able to change it again afterwards. If the sales date has not been
programmed, your phone will not enter the normal stand-by mode.
3.1.2.2 Radio Path Identification
1. Press , an d the fo llowing text will appear in the display:
RADIO PATH ID [XXXXXXXXXX].
2. Choose
save the identification by choosing
radio path identification is correct.
CHANGE. Enter the radio path identification (ten digits), and
3.1.2.3 Own number
1. Press : own number [+ XXXX...X]
2. Choose CHANGE. Enter the own number (follo w the instruction of the
operator), and save it by choo sing SAVE. Remember to check that the own
number is correct.
Note! SMS doesn’t work if the own number has not been programmed.
SAVE. Remember to check that the
3.1.2.4 Phone Code
1. Press , and the following text will appear in the display:
PHONE CODE [XXXX].
2. Choose CHANGE. Enter the phone code (four digits) , and save th e code
by choosing SAVE.
3.1.2.5 Y1 Y3 ID (Additional operator indicator)
It is possible to change old/add new operator indicator which operates in
automatic roaming mode. (network selection mode: Automatic)
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Product: TDP70WN / Installation Instructions
5.9.2000
1. Press : Y1:X Y3:XX ID: ABC
2. Choose SELE CT . Enter Y1 (Country code: one digit) and choose
SAVE.
Enter Y3 (Operator code: two digits) and choose SAVE.
Enter ID (Operator indicator, 3 characters) and choose SAVE.
3.1.2.6 Automatic roaming and Interleaving
The Dealer activates or deactives them according to the operator’s or the
customer’s likings.
3.1.2.7 Closing Instructions
1. Having programmed the necessary information choo se QUIT, and the
following text will appear in the di splay: ***BENEFON***.
2. Turn off your phone, and disconnect the localbox.
3. Turn the phone on once more, and make a test call.
3.1.3 To program Using the BeneLoc Program
power
5V log
gen
flash
5V log
meter
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Start the installed program by clicking the icon. The phone must be connected
to the system as discribed above.
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Main window
Product: TDP70WN / Installation Instructions
5.9.2000
Press Dealer-key to enter the programming window.
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You can read the phone data by pressing the Read phone -key. You can
change the miscellanous settings with the computer and transfer them to
phone by pressing the Program phone -key.
BeneLoc includes Help-program for further information.
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4.0 BeneLoc
BeneLoc
Product: TDP70WN / BeneLoc
5.9.2000
power
5V log
gen
flash
5V log
meter
BeneLoc program is desi gned to hel p service person o n tuning and service purp ose.
With Flasher Program you can change the software to Benefon phones.
Both, BeneLoc and Flasher program will need Service Adapter, Power Supply and
Localbox with service rights to work.
4.0.1 Installation of BeneLoc program
Start Windows. Close all other programs except Program Manager.
Insert BeneLoc Installation Disc 1 in the floppy disk drive of your computer. In the
Program Manager window, choose Run from File menu.
Ty pe the letter A: or B: to indicate your floppy disc drive, and then type SETUP.EXE.
For example, A:\SETUP.EXE.
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Click the OK button, and follow the instructions displayed on your screen.
The Setup Program will ask you to specify the drive and directory in which you want
1
to install the BeneLoc Program. The P r ogram suggests the following: C:\Bene-
App\BeneLoc. Accept the drive and director y by cli cking Next button. You can also
type your own directory for BeneLoc Program .
The Setup Program creates all nec es sary directories and subdirectories to your
computer. Setup Program also creates its own group window in Program Manager.
4.0.2 To start the BeneLoc program
Connect the Servic e Localbox to serial po rt of you r co m put er, which is called COM1
or COM2. The serial ports are usually located in the back of your computer, and
more precise instructions can be found in the manual accompanying the computer.
Adjust the Power Supply voltage to 4.0 Vdc. Connect the Service Localbox to the
Power Supply.
Connect the Servic e Adapter to the phone. Pl ug the cabl e with flat conn ector into the
connector at the bottom of the phone. When the cable has been connected and the
phone is switched on, the phone should be in LOCAL mode. You can test this by
pressing arrow button. There should be ***BENEFON*** on the di splay, if not, clean
connectors and try again. When phone is in LOCAL mode you can start the BeneLoc Program.
Product: TDP70WN / BeneLoc
5.9.2000
To start the BeneLoc Program, double click the BeneLoc icon.
In the BeneLoc Startup window, first sele ct th e correct serial p ort. The n, you ha ve to
select type of the phone. You can also use the Autodetect option. After selection
click OK to start Be neLoc Program. When operating without external power sup ply
the phone may be on sleep m ode an d r egi str a ti on f ai ls . You can wake up the phon e
by pressing some buttons on the phone.
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4.0.3 Using the BeneLoc program
In the main window of the BeneLoc, you will find submenus and buttons. Clicking the
buttons you can go to the submenus.
Change
For changing phone to another similar you do not need to do more than enter into
main menu. It means that this button is not needed. If you are going to change the
tested phone to one having different software in, clicking Change will start the registration protocol again.
Product: TDP70WN / BeneLoc
5.9.2000
Help
Dealer
About BeneLoc submenu will tell you version of the BeneLoc Program and also the
state of memory.
About Cellular submenu will show you information of t he phone. Type of phones
software, sales date, date of the software, serial number and present tuning values
of the phone. You can not change the tuning values from Help menu.
From Dealer submenu you can make or check programming of the phone. You will
also find the SIS information from Dealer submenu.
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Service
Product: TDP70WN / BeneLoc
5.9.2000
You can control the audio lines (for e xample , switch Rx aud io and com pan der on /off )
in the Service mai n menu . It is al so possible to contro l the ph one to de sired ch annel.
There is also possible to change the power of transmitter.
In the Ports submenu is you can see the status of different digital ports. There is
also possible to control some of the output ports.
You can read the status of the A/D converters from the A/D submen u. Select 8 di ffer ent topics to view. By clicking SCAN AD button The Beneloc will scan A/D the state
of converters continuously. Scanning can stopped by clicking ST OP AD .
Memory submenu allows you to make Ram reset.
By clicking Initialize You can clear all LOCAL settings in service menu.
Home button will return you back to main menu.
Tunings
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From Tunings main menu you can select different tunings to do. Every tuning have
they own instruction window. Follow given instruc tions to do tunings. Clicking
START will start tuning. The value will be stored only by clicking SAVE. Some of th e
tunings are chained and you can enter to next phase by clicking NEXT.
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4
System
File
Product: TDP70WN / BeneLoc
5.9.2000
You select used mobile phone system from this submenu.
From settings submenu you can manually change settings of the communication
port.
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Product: TDP70WN /
5.9.2000
5.0 PHONE’S CONSTRUCTION
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LOGIC / AUDIO
OC2285 Processor/Audio/RF
5.1 PROCESSOR
5.1.1 General
The entire radio: The audio, processor and RF functions are found within a
single OC2200 board, along with the display and keyboard.
The processor controls the audio and radio (RF) parts, internal devices and
external accessories.
The µCBIC (processor-asic) includes:
µCBIC IG3010
PROM 29DL800BT Flash program memory
SIS IG2048
Product: TDP70WN / OC2285 Processor/Audio/RF
5.9.2000
H8/300H-cpu, 10k*8 CMOS RAM, 8 A/D, 4 D/A, 48
pcs I/O lines,3 series-interfaces, 2 modem-interfaces,
i2c-interface, frequency counter, realtime clock
Asic for SIS-function, 256k*8 EEPROM + Universal
EEPROM for tuning values
5.1.2 Connectors:
5.1.2.1 Connector for service purposes only
1 V-PROG flash programming voltage 0.5/12 -14 Vdc
2 GEN_OUTPUT rx audio signal output 100 mVrms
3 CHGDET charger detector 0/VCC digital
4 SCL i2c clock 0/VCC digital
5 SDA i2c clock 0/VCC digital
6 TXDO RS232 output 0/VCC digital
7 GEN_INPUT tx audio signal output 200 mVrms
8 RXDO RS232 input 0/VCC digital
5.1.2.2 Headset connector, V2
1 HFMIC microphone signal input 10 mVrms
2 HEADSET headset detector 0/VCC digital
3 HFERP earphone signal output 100 mVr ms
4 GND ground
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Product: TDP70WN / OC2285 Processor/Audio/RF
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5.1.2.3 Charger connector, V6
1 Charger voltage 6 ...10 V DC
2 Ground
5.1.2.4 Battery connector, V5
1 Ground
2 VB_unfilter ed 3.6 V
5.1.2.5 Battery identification connector, V4
1 Bat_type_1 0/VB digital
2 Bat_type_2 0/VB digital
5.1.2.6 Display and keyboard connector, V3
1GND
2 KEYIN0 key matrix input 0/VCC
3 KEYIN1 key matrix input 0/VCC
4 KEYIN2 key matrix input 0/VCC
5 KEYIN3 key matrix input 0/VCC
6 KEYIN4 key matrix input 0/VCC
7 KEYOUT0 key matrix output 0/VCC
8 KEYOUT1 key matrix output 0/VCC
9 KEYOUT2 key matrix output 0/VCC
10 KEYOUT3 key matrix output 0/VCC
11 PWRSW key matrix input 0/VCC
12 PWRKEYIN powerkey 0/VCC
13 GND ground
14 VCC LCD power supply VCC
15 RESET reset signal 0/VCC
16 DCS1 display chip select 0/VCC
17 DAO L:control data H:display data 0/VCC
18 DSCL serial clock line for data 0/VCC
19 DSI serial data input 0/VCC
20..31 connected to the voltage components
32 GND ground
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5.1.2.7 Circuit Diagram
The processor, audio and RF circuits diagram is split into seven parts. Signals
in the circuit diagrams have been given names, and signals with the same
name are connected between diagrams (<x> = page).
Page 1 of 7 module connector pins
5.1.3 Functions
Product: TDP70WN / OC2285 Processor/Audio/RF
5.9.2000
2 of 7 power supply + display
3 of 7 µCBIC, EPROM, SIS-function
4 of 7 audio parts
5 of 7 synthesizer
6 of 7 receiver
7 of 7 transmitter
5.1.3.1 µ CBIC
I3 is itself a processor-asic circuit. It is comprised H8/300H-cpu, 10k*8 CMOS
RAM, 8 A/D, 4 D/A, 48 pcs I/O lines, 3 series-interfaces, 2 modem-interfaces,
i2c-interface, frequency counter, realtime clock, timers and 4,8 MHz clock
oscillator. The µCBIC divides this by 4 to get timing signal E.
When the process or is operating, RESET = VCC, VCC = 2.8 V, E = 1.2 MHz.
5.1.3.2 Memories
Memory and external I/O-circuit address coding is done with the µCBIC circuit
I3. The circuit options CE, OE and WE are 0-active.
The program memory is in 8 Mbit Flash memory 29DL800.
RAM-memory is 10k*8 CMOS RAM and included in the µCBIC. µCBIC uses its
own power suppl y voltage which i s VRAM a nd is al ways oper ating, eve n when
the radio is in the OFF state.
5.1.3.3 The Modem
The FFSK modem is located in the audio circuit. The modem is connected to
the µCBIC by a series line, input to synchronised port, and transmission is
controlled by an µCBIC series output. The modem gives a 1200 Hz signal
RXCLK and TXCLK to the µCBIC. There is a data detector within the modem,
the speed of which is controlled by C57. The µCBIC A/D converter measures
the level of acceptance from ERPDET line. The same detector also serves to
control HF fu n c ti on.
5.1.3.4 AFC
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The AFC function is performed by an internal µCBIC frequency counter. A 450
kHz intermediat e frequency is amplified to a square-wave form by Q5. The
4
frequency is adjusted by µCBIC D/A 1 signal. This approx. 1.5 Vdc voltage is
fed to the synthesiser AFC pin.
5.1.3.5 Sleep Timer
The phone puts the central functions to sleep for a time. Although everything
seems normal to th e user, but mo st of the fun ctions are closed dow n. The radio
and audio units are closed down completely. The processor still has a power
supply, but the processor is halted and has minimal power consumption. Only
the µCBIC circuit sleep timer and its 32 kHz crystal oscilla tor remain in active
mode. The phone is "woken up" by interrupting the sleep timer or by changing
the keyboard state. Th e sleep time r 32 kHz clock fr eque ncy is pr oduced by the
oscillator made by crystal X1.
5.1.3.6 Warm start
C32 and R38 meas ure th e l en gt h of a voltage break. The vol ta ge dr op s dur i ng
a break, after which it is measured by the A/D (AN2) converter. The time
constant is approx. 10 s. Thus a "warm start" is detected.
Product: TDP70WN / OC2285 Processor/Audio/RF
5.9.2000
5.1.3.7 Reset
The output (VCC) of the main voltage regulator I11 is connected to the power
supply reset monitor I1. The output of I1 resets (stops) the processor and
zeroes the controls when the battery voltage drops below 2.6 V. When the
voltage rises again, the processor restarts.
5.1.3.8 Power Switch
When the power switch is pressed, th e PWRSW line goes to high state and
drives the regulator to operate. The program commences and checks the
PWRSW line to ensure that the switch is being pressed, and sets hold on the
regulator for the PWRON line. Wh en the switch is d ep ressed fo r a lo ng er time,
the program directs power to the PWROFF line. During a short voltage break,
C1 remembers the previous control, i.e. C1 keeps the control voltage high
when the battery voltage is restored within 10 seconds. C1 also serves as a
watch-dog should the voltage drop or processor error-state continue; after 10
seconds, the radio will shut down completely.
Note1! When the phone is operative, the same power power switch acts also
the # key.
Note2! The µCBIC circuits have their own power supply voltage connected to
the battery to e nsu re an u ni nte r rupte d power supply. The µCBIC power su pp ly
is ensured during a battery-back change by the battery B 1.
5.1.3.9 Battery Voltage Measurement
The battery voltage is measured by an A/D converter (AN7). The reference
voltage for the measurement is provided by the main regulator 2.8 V supply.
Calibration is done by the program against a precisely known battery voltage.
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5.1.3.10 I/O ports
The µCBIC I/O ports PA PF are 8-bit hold circuits. Data is fed to the addresed
output. When the RESET line is down (0 V) all the µCBIC ports are ze roed (0V).
As RESET rises again, all of th e two-way I/O p orts are inputs un til the prog ram
sets them to the desired state. With the radio in OFF state, RESET is down so
all of the controls are also down although µCBIC is still provided with
operational voltage VRAM.
5.1.3.11 SIS
SIM is performed by a BENEFON ASIC IG2048 manufactured by Atmel.
Integrated circui t IG 20 48 is E2 logic arra y. Th is typ e o f ar ra y i n corpo ra tes bo th
an electrically erasable and programmable read only memory (EEPROM) and
a gate array for SIM function.
SIM has 256 bytes internal EEPROM di vided to tw o part s: 224 byte s EEPROM
for universal use and 32 bytes EEPROM for SIS calculations are secured by
programmable fuse function.
Product: TDP70WN / OC2285 Processor/Audio/RF
5.9.2000
User specific information is stored in EEPROM which CANNOT be read from
outside the chip. All external attemps to read the information clear both.
EEPROM and RAM (fill with FF).
5.1.3.12 Power Adjustment
The transmitter control logic switches TX power and also adjusts it to the
correct level. The TXS_REG signal sets the transmitter to ready mode. Power
is controlled by the µCBIC analog output A/D 0 through the TXPWR line. 0 V
corresponds to "no power" and 2.8 V to maximum transmitter power. The
power levels are calibrated by the program at the source of me asurement.
5.1.3.13 Charging Control
The charger is con trol led by th e pro gram. The char ger is detect ed by a volta ge
at the CHGDET pin. The chargin g curr en t is con tro l led w ith Q10 which acts as
a switch. The switch Q10 is controlled by Q4 through the charge_on -line.
5.1.3.14 Temperature Measurement
The radio has one temperature sensor R72, situated just under the battery
pack. Inside the radio the NTC resisto r R72 voltage is measu red by the µCBIC
A/D converter (AN6). This value is converted by a programmed table to a
temperature reading.
5.1.3.15 Real-time Clock
A real-time clock is pr ovided with in µCBIC to give the ti me and dat e. The alarm
function can also be programmed to the ALARM pin. This will initiate the main
regulator and thus also the radio although it is in OFF state.
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