Panasonic EB-GD90 Guía de inicio rápido

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Order Number: MCUK990801G8

Issue 1

Revision 0

Technical Guide

GD90 Personal Cellular Telephone

Handheld Portable

EB-GD90

Specification

Unless stated these specifications are with Battery Pack (EB-BSD90) fitted.

Battery life figures are dependent on network conditions.

900 MHz 1800 MHz

Frequency range Tx: 890 - 915 MHz

Rx: 935 - 960 MHz

Tx: 1710 - 1785 MHz

Rx: 1805 - 1880 MHz

Tx/Rx frequency separation 45 MHz 95 MHz

RF channel bandwidth 200 kHz

Number of RF channels 124 374

Speech coding Full rate/Half rate/Enhanced

Full rate

Full rate/Half rate

Operating temperature -10°C to +55°C

Type Class 4 Handheld Class 1 Handheld

RF Output Power 2 W maximum 1 W maximum

Modulation GMSK (BT = 0.3)

Connection 8 ch/TDMA

Voice digitizing 13 kbps RPE-LTP / 13 kps ACLEP / 5.6 kps CELP / VSLEP

Transmission speed 270.3 kbps

Diversity Frequency hopping

Signal Reception Double superheterodyne

Intermediate Frequency 282MHz and 45MHz

Antenna Terminal Impedance 50 Ω

Antenna VSWR <2.1 : 1

Dimensions Height: 118 mm

Width: 42 mm

Depth: 16.5 mm

Volume 84.5 cc

Weight 88 g

Display Graphical chip on glass liquid crystal, Alphanumeric 16 x 3

characters, 5 icons and 6 x 1 characters

Illumination Green:

4 LEDs for the LCD

8 LEDs for the keyboards

1 LED Incoming call

Red:

1 LED Charging indicator

Keypad 17 keys, Navigation key

SIM Plug-in type only

External DC Supply Voltage 3.6 V

Battery 3.6 V

Standby Battery Life

DRX 9

95 hrs maximum

Conversation Battery Life

PL 7, DTX 50%

200 minutes

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or

cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or

products dealt with in this service manual by anyone else could result in serious injury or death.

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Issue 1 – ii – MCUK990801G8

Revision 0 Technical Guide

This Technical Guide is copyright and issued on the strict understanding that it is not to be reproduced, copied, or disclosed to

any third party, either in whole or part, without the prior written consent of Matsushita Communication Industrial UK Ltd.

Every care has been taken to ensure that the contents of this publication give an accurate representation of the equipment.

However, Matsushita Communication Industrial UK Ltd. accepts no responsibility for inaccuracies which may occur and

reserves the right to make changes to the specification or design without prior notice.

The information contained in this manual and all rights in any designs disclosed therein, are and remain the exclusive property

of Matsushita Communication Industrial UK Ltd.

Other patents applying to material contained in this publication:

BULL CP8 PATENTS

Comments or correspondence concerning this manual should be addressed to:

Customer Support Department,

Matsushita Communication Industrial UK Ltd.,

Colthrop,Thatcham,

Berkshire. RG19 4ZD.

ENGLAND

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MCUK990801G8 Section Issue 1

Technical Guide – iii – Revision 0

CONTENTS

1 INTRODUCTION

1.1 Purpose of this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Structure of the Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 INTERFACES AND TEST POINTS

2.1 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 RF OVERVIEW

3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 RF & Accessory Connector . . . . . . . . . . . . . . . . . . . . . . 10

4 TRANSMITTER

4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 12

5 RECEIVER

5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 16

6 BASEBAND OVERVIEW

6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.2 Functional Description of the PCB . . . . . . . . . . . . . . . . 19

7 GEMINI

7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 25

8 VEGA

8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 29

9 POWER SUPPLIES

9.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9.3 Power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9.4 Power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

9.5 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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INTRODUCTION

MCUK990801G8 Section 1 Issue 1

Technical Guide – 1 – Revision 0

1 INTRODUCTION

1.1 Purpose of this Guide

This guide contains technical information for the Panasonic GD90 personal cellular telephone system operating on the GSM

network. Procedures for installing, operating and servicing (e.g. disassembly and testing) the telephone system are provided

in the associated Service Manual.

1.2 Structure of the Guide

The guide is structured to provide service-engineering personnel with the following technical information on the GSM mobile

telephone:

1. Interface details and relevant test points.

2. Functional description of each section of the mobile telephone.

3. Detailed description of each section of the mobile telephone.

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INTERFACES AND TEST POINTS

MCUK990801G8 Section 2 Issue A

Technical Guide – 9 – Revision 0

2 INTERFACES AND TEST POINTS

2.1 Interfaces

2.1.1 Main and Keypad PCBs

The interface between Main and Keypad PCBs is made via a 34-way connector as follows:

Figure 2.1: GD90 Interboard Connector

No. Signal Name MAIN <=> KEYPAD Function Connection

1 GROUND -

2 D28V - Power Source for LCD Module

3 KEYBKLT ==> Key Backlight Power Source Charge IC pin 16

4 LCD_GRN ==> LCD Green Backlight Power Charge IC pin 18

5 LCD_RED ==> LCD Red Backlight Power Charge IC pin 17

6 A(1) ==> MPU Address bus (1) GEMINI pin 25

7 RnW ==> MPU Read/nWrite signal GEMINI pin 20

8 KBC(4) ==> Key Column 4 signal for Key scan GEMINI pin 128

9 KBC(3) ==> Key Column 3 signal for Key scan GEMINI pin 129

10 KBC(2) ==> Key Column 2 signal for Key scan GEMINI pin 130

11 KBC(0) ==> Key Column 0 signal for Key scan GEMINI pin 132

12 KBC(1) ==> Key Column 1signal for Key scan GEMINI pin 133

13 D(4) <==> MPU Data bus (4)

14 D(3) <==> MPU Data bus (3)

15 D(2) <==> MPU Data bus (2)

16 D(1) <==> MPU Data bus (1)

17 D(0) <==> MPU Data bus (0)

18 GROUND - l

19 D28V - Power Source for LCD Module

20 nPOWKEY <== Power Key sense signal

21 PAGING_LED ==> Paging LED control signal SIM_PWR IC pin 22

22 CHARGE_LED ==> Charge LED control signal GEMINI pin 105

23 nRESET ==> MPU nRESET signal

24 CS_LCD ==> LCD chip select signal GEMINI pin 55

25 KBR(3) <== Key Row 3 signal for Key scan GEMINI pin 123

26 KBR(2) <== Key Row 2 signal for Key scan GEMINI pin 124

27 KBR(4) <== Key Row 4 signal for Key scan GEMINI pin 122

28 KBR(1) <== Key Row 1 signal for Key scan GEMINI pin 125

29 KBR(0) <== Key Row 0 signal for Key scan GEMINI pin 126

GND

D28V

KEYBKLT

LCD_GRN

LCD_RED

A(1)

RnV

KBC(4)

KBC(3)

KBC(2)

KBC(0)

KBC(1)

D(4)

D(3)

D(2)

D(1)

D(0)

GND

D28V

nPOWKEY

PAGING_LED

CHARGING_LED

nRESET

KBR(3)

KBR(2)

KBR(4)

KBR(1)

KBR(0)

D(5)

D(6)

D(7)

REC_P

REC_N

CS_LCD

10075-1

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INTERFACES AND TEST POINTS

Issue A Section 2 MCUK990801G8

Revision 0 – 10 – Technical Guide

GD90 has two external connectors:

1. a multi-way connector for use with a handsfree data;

2. additional contacts for charging the battery pack while in the desktop charger;

All interfaces are electrically and mechanically compatible with GD90.

Main Unit <==> External I/O

30 D(5) <==> MPU Data bus (5)

31 D(6) <==> MPU Data bus (6)

32 D(7) <==> MPU Data bus (7)

33 REC_P ==> Receiver Positive Output

34 REC_N ==> Receiver Negative Output

No. Name H/H <=> EXT Total Function H/H Circuit

1 GND ==> 6 Ground

2 PA_ON ==> 1 Gating of spectrum analyser for Transmitter

performance testing

L: Off, Hi - Z: On)

3 nLOGIC_PWR ==> 1 Accessory Power Control signal.

In the handsfree this is logical OR’ed with

IGNITION in order that the software can

maintain the Handsfree power-on state if the

user is in a call and that the IGNITION is

switched off. L: Power-on, Hi-Z: Power-off

4 IGNITION <== 1 IGNITION is used in two cases.

1) Determine the mode of operation of the H/H

when the Handsfree accessory is attached.

L: At a suitable time enter dummy sleep mode

and therefore minimise the drain on the car

battery (nLOGIC_POWER = Hi - Z)

H: Normal mode

2) Satisfy 2nd of 2 conditions for sending

initialise Testset command and entering Testset

mode. (see nADP_SENSE for 1st condition)

L: Condition 2 satisfied

H: Enter Testset mode not satisfied

5 VBAT <=> 1 The pin is either an input or an output

depending upon the battery connection.

1) Battery/Dummy battery connected: Output

supply terminal for attached accessories.

2) No connection: Low current input supply

terminal for non-RF performance checking in

Testset Mode or Flash programming.

6 nH/F_SENSE <== 1 Handsfree sense line

L: connected

H (internal pull-up): disconnected

7 nRADIO_MUTE ==> 1 Radio Mute

L: mute, Hi-Z: unmute)

8 RX_AUDIO ==> 1 Accessory Receiving Audio

-16 dBm0 = 76.7m Vrms

9 GND ==> Ground Refer to pin 1

No. Signal Name MAIN <=> KEYPAD Function Connection

10095-1

10k

330p

10096-1

330

10097-1

330

50k

200

10098-1

10099-1

330

100k

10100-1

330

50k

200

10101-1

560

10102-1

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INTERFACES AND TEST POINTS

MCUK990801G8 Section 2 Issue A

Technical Guide – 11 – Revision 0

10 EXT-PWR <== 2 Power supply for battery charging, Power ON/

Off control and accessory control circuits.

Voltage: 5.8 ± 0.2 V

Current: 650 ± 50 mA

11 NON_HOOK <== 1 Indicates if the optional second handset is on or

off hook. In handsfree operation, if the optional

handset is not fitted this signal defaults to on

hook. (Low.)

12 SERIAL_OUT ==> 1 Downlink Serial Data

(Baud rate is same as SERIAL_IN)

13 SERIAL_IN <== 1 Uplink Serial Data

The baud rate is dependant upon the attached

accessory, whether operating in Testset Mode

or Flash Downloading.

SMS cable: 9600 bps

RS232 Direct cable: 38.4 kbps

Data adapter: 33.8 kbps

Testset: 9600 bps

Flash Download: 56 kbps

14 nADP_SENSE <== 1 NADP_SENSE has 5 possible states. The state

is determined by the value of the pull-down

resistor in the attached accessory / test set.

NADP_SENSE has 2 purposes as follows:

1) To identify an attached accessory.

Open (H): No attached accessory

82 kΩ=± 1% (MH): Headset Adapter

56 kΩ=± 1% (M): SMS Cable

33 kΩ=± 1% (ML): RS232C Direct Cable

GND (L): Data Adapter

2) Determine whether the 1st of 2 conditions

are satisfied for sending the initialise Testset

command on SERIAL_OUT, and entering

Testset mode (see IGNITION for 2nd condition).

H/MH: Condition 1 satisfied

M/ML/L: Enter Testset Mode not satisfied

15 NH/F_ON ==> 1 Accessory Sending & Receiving Audio paths

unmute

L: unmute, Hi-Z: mute

16 GND ==> 6 Refer to pin 1 Refer to pin 1

17 TX_AUDIO <== 1 Accessory Sending Audio

-16 dBm0 = 40.4 m Vrms

18 GND ==> 6 Ground connection of Dual Charger Refer to pin 1

No. Name H/H <=> EXT Total Function H/H Circuit

10103-1

Trickle Charge Circuit

Power On/Off Control Circuit

Rapid Charge Circuit

Accessory Control Circuit

330

100k

10100-1

330

2.2k

47k

10104-1

330

4.7 k

10105-1

330

100k

10100-1

330

50k

200

10101-1

11 10k

3k3

10106-1

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INTERFACES AND TEST POINTS

Issue A Section 2 MCUK990801G8

Revision 0 – 12 – Technical Guide

Battery Connector

SIM Interface

19 GND ==> 6 Ground connection of Dual Charger Refer to pin 1

20 GND ==> 6 Ground connection of Dual Charger Refer to pin 1

21 GND ==> 6 Ground connection of Dual Charger Refer to pin 1

22 CHARGE_ON <=> 1 The Dual Charger shall hold CHARGE_ON to

the middle level unit a H/H is inserted into the

front slot.

H: 2.0<=V<=3.0 volts; Dual Charger detects

connection of H/H

M: 1.0<=V<2.0 volts; Unconnected

L: 0.0<=V<1.0 volts; Dual Charger detects

connection of H/H

23 EXT_PWR <== 2 The Dual Charger shall control switching of the

power supply to the front slot (corresponds to

EXT_PWR) based on the state of the

CHARGE_ON signal.

H: EXT_PWR supplied

L: When the H/H can determine whether or not

to set CHARGE_ON. After the insertion of the

H/H, EXT_PWR shall be subsequently supplied

withinTBA hours

Refer to pin 8

No. Name H/H <=> EXT Total Function H/H Circuit

1 VBAT <== 1 Positive battery terminal.

Li+ (2 cells in parallel): 3.6 V nom.

NiMH (3 cells in series): 3.6 V nom.

2 BAT_TEMP <== 1 BAT_TEMP has 2 purposes.

1) Determine whether a battery is attached to

the H/H.

2) Monitor battery temperature for the purposes

of charging.

H: Abnormal battery

M: Li+ or NiMH charging

L: No battery or abnormal battery

3 GND <== 1 Negative battery terminal

4 BAT_ID <== 1 BAT_ID is used to identify the type of attached

battery.

H: Li+ or no battery

L: NiMH

Pin Signal

1GND

25V

3 Not connected

4 Reset

5 Serial input/output

6 Clock

7 Not connected

8 Not connected

No. Name H/H <=> EXT Total Function H/H Circuit

10k

330

CHARGE_ON

0.1µ

10107-1

10108-1

ChargerIC VREFOUT

ESD

Vega_ADIN2

ESD

Protection

10109-1

10110-1

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RF OVERVIEW

MCUK990801G8 Section 3 Issue 1

Technical Guide – 7 – Revision 0

3 RF OVERVIEW

3.1 Introduction

3.1.1 General Specifications

GD90 is a Dual Band product incorporating two switchable transceivers, one for the GSM900 band and another for the

GSM1800 (DCS1800) band. The transmit and receive bands for the mobile are given in the table below:

Other salient technical features are as follows:

3.1.2 Description of Main PCB

All components required for the RF and Logic circuits, excluding the LCD module and backlight LEDs, are contained on the

Main PCB. The Main PCB has six layers made from FR4 material (Epoxide woven glass fabric copper-clad laminate as

specified in BS4584 Part 102 and prepeg as specified in BS4584 Part 103). Top and bottom layer tracks are gold-plated to

prevent oxidisation and enable better soldering. The board thickness is 0.9 mm (± 0.1 mm).

The RF components are located on both sides of the upper area of the Main PCB. To provide RF shielding, most of one side

of the Keypad PCB comprises a printed circuit groundplane. The Main board is connected to the Keypad PCB via a 34-way

dual in-line connector. A metallised plastic chassis is used to separate the Main and the Keypad PCB’s. When the chassis is

sandwiched between the Main and the Keypad PCB’s, the groundplane of the Main board together with the chassis forms an

effective shielded enclosure which prevents spurious emissions. The chassis has also been designed to provide smaller walled

sections which are used to isolate sensitive RF areas such as the VCTCXO and the VCO from high level interferers such as

the PA output.

3.2 Functional Description

3.2.1 Frequency Plan

The GD90 frequency plan is shown below

Tx Rx

GSM900 890-915 MHz 935-960 MHz

GSM1800 1710-1785 MHz 1805-1880 MHz

GSM900 GSM1800 Units

Rx Bandwidth 25 75 MHz

Tx Bandwidth 25 75 MHz

Duplex Spacing 45 95 MHz

Number of Channels 124 374

ARFCN (Channel Numbers) 1-124 512-885

1st Tx Channel 890.2 1710.2 MHz

Last Tx Channel 914.8 1784.8 MHz

1st Rx Channel 935.2 1805.2 MHz

Last Rx Channel 959.8 1879.8 MHz

Maximum Tx Power 33.0

(Class 4) (PL5)

30.0

(Class 1) (PL0)

dBm

Minimum Tx Power 5.0

(PL19)

0.0

(PL15)

dBm

Tx Tx IF RFLO Tx IFLO Tx Unit

GSM900 890-915 270 1160-1185 540 MHz

GSM1800 1710-1785 130 1580-1655 520 MHz

Rx Rx 1st IF Rx 2nd IF RFLO Rx IFLO Rx Unit

GSM900 935-960 225 45 1160-1185 540 MHz

GSM1800 1805-1880 225 45 1580-1655 540 MHz

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RF OVERVIEW

Issue A Section 3 MCUK990801G8

Revision 0 – 14 – Technical Guide

Figure 3.1: RF Block Diagram

V_PAON

DATA

RAMP DATA

IF SAW

Demod

PGC

(225MHz)

PHASE

DETECTOR

PLL IC

Ref.

Clock

AFC

TX DUAL VCO

UY76044

LOOP

FILTER

LOOP

FILTER

1/2

1/6

13MHz

1/2

PCNnGSM

CLOCK

STROBE

PCNnGSM

V_PAON

DATA

CLOCK

STROBE

PCNnGSM

GSM:540MHz

DCS TX:520MHz

RX:540MHz

GSM:1160~1185MHz

DCS:1580~1655MHz

45MHz

GSM:890~915MHz

DCS:1710~1785MHz

ANT

GSM

LNA

DCS

LNA

(DCS)

EFCH225MDQP2

(MACO)

PLL

PCNnGSM

PGC Gain

PCNnGSM

TXON1

RXON1

RXON2

2nd LOCAL VCO

(MACO)

10076-1

PLL IC

MB15F03SL

[SSOP Package]

(Fujitsu)

Diplexer + 2

LMC36-07A0503A

(MURATA)

(GSM)

DUAL LOCAL VCO

UY76043A

(MACO)

DUAL RX SAW

Filter 3.8*3.8mm

(MACO)

DUAL LNA IC

GN01073B

(MEC)

DUAL RX SAW

3.8*3.8mm

(MACO)

DCS

Mixer

2nd

Mixer

GSM

Mixer

HITACHI

BRIGHT-2

HD155123F

13MHz VCXO

7.0*5.0mm

(NDK)

3 wire bus control

1st, 2nd Mixer Gain

I&Q

MODULATOR

LOOP

FILTER

PCNnGSM

MIXER

DUAL TX SAW

Filter

3.8*3.8mm

(MACO)

Exciter

MGA-81563

(HP)

LPF Coupler

(GSM)

LDC15H200J0897

(MURATA)

Dual PA

PF08103B

(HITACHI)

LPF Coupler

(DCS)

LDC15H200J0897

(MURATA)

DUAL APC IC

HD155171T

(HITACHI)

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