Panasonic EB-GD93 Technical Manual
  1. Manuals
  2. Brands
  3. Panasonic Manuals
  4. Cell Phone
  5. EB-GD93
  6. Technical manual
Panasonic EB-GD93 Technical Manual

Panasonic EB-GD93 Technical Manual

Personal cellular telephone
Hide thumbs Also See for EB-GD93:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Service Manual
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.
Issue 1
Revision 0
Personal Cellular Telephone
EB-GD93
Specification
Frequency Range
Tx/Rx frequency separation
RF Channel Bandwidth
Number of RF channels
Speech coding
Operating temperature
Type
RF Output Power
Modulation
Connection
Voice digitizing
Transmission speed
Diversity
Signal Reception
Intermediate Frequencies
Antenna Terminal Impedance
Antenna VSWR
Dimensions
Volume
Weight
Display
Illumination
Keys
SIM
External DC Supply Voltage
Battery
Standby Battery Life
DRX 9
Conversation Battery Life
PL 7, DTX 50%
Battery life figures are dependent on network conditions.
WARNING
© 2000 Matsushita Communication Industrial UK
Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
Order Number: MCUK001001G8
900 MHz
1800 MHz
Tx: 890 - 915MHz
Tx: 1710 - 1785 MHz
Rx: 935 - 960 MHz
Rx: 1805 - 1880 MHz
45 MHz
95 MHz
200 kHz
124
374
Full rate/Half rate/Enhanced Full rate
-10 °C to +55 °C
Class 4 Handheld
Class 1 Handheld
2 W maximum
1 W maximum
GMSK (BT = 0.3)
8 ch/TDMA
13 kbps RPE-LTP / 13 kps ACLEP / 5.6 kps CELP /
VSLEP
270.3 kbps
Frequency hopping
Double superheterodyne
225 MHz and 45 MHz
50 τ
<2.1 : 1
Height: 120 mm
Width:
45 mm
Depth:
16.4 mm
81 ml
80 g
Graphical chip on glass liquid crystal, Alphanumeric,
16 x 4 characters + 2 lines of icons.
4 LEDs for the LCD (7-colour)
8 LEDs for the keypad (Green)
1 LED Incoming call (Green)
1 Charging LED (Red)
18-key Keypad, Navigation key, Memo key.
Plug-in type only
5.8 V
3.7 V nominal, 650mAh, Li-Ion
170 hrs maximum
210 minutes

Advertisement

Table of Contents
loading

Related Manuals for Panasonic EB-GD93

Summary of Contents for Panasonic EB-GD93

  • Page 1 Order Number: MCUK001001G8 Personal Cellular Telephone EB-GD93 Specification 900 MHz 1800 MHz Frequency Range Tx: 890 - 915MHz Tx: 1710 - 1785 MHz Rx: 935 - 960 MHz Rx: 1805 - 1880 MHz Tx/Rx frequency separation 45 MHz 95 MHz...
  • Page 2 Company Liability This Technical Guide is copyright and issued on the strict understanding that it is not be reproduced, copied, or disclosed to any third party, either in whole or in part, without the prior written consent of Matsushita Communication Industrial UK Ltd. Every care has been taken to ensure that the contents of this manual give an accurate representation of the equipment.

  • Page 3: Table Of Contents

    CONTENTS 1 INTRODUCTION Purpose of this Guide ......1 Structure of the Guide ......1 2 INTERFACES AND TEST POINTS Interfaces .
  • Page 4 This page is left intentionally blank. Issue 1 Section MCUK001001G8 Revision 0 – iv – Technical Guide...

  • Page 5: Introduction

    INTRODUCTION 1 INTRODUCTION 1.1. Purpose of this Guide This Technical Guide contains technical information for the Panasonic GD93 personal cellular telephone operating on the GSM Digital Cellular Network. 1.2. Structure of the Guide The manual is structured to provide service engineering personnel with the following technical information: Interface details and relevant test points.
  • Page 6 INTRODUCTION This page is intentionally blank. Issue 1 Section 1 MCUK001001G8 Revision 0 – 2 – Technical Guide...

  • Page 7: Interfaces And Test Points

    INTERFACES AND TEST POINTS 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 33-way connector. GROUND V[5] VBAT V[4] KBR(4) V[3] KBR(3) V[2] KBR(2) V[1] KBR(1) CAP2+ CAP2- CAP1-...
  • Page 8 INTERFACES AND TEST POINTS 2.1.2 External I/O CASE FRONT 10225-1 Figure 2.2: External I/O Connector Name HH <==>EXT Function H/H Circuit AGND Audio Ground 10095-1 TX-AUDIO <== Sending Audio RX-AUDIO ==> Received Audio 10222-1 VBAT IN / <== Battery Voltage Supply input / DATA_MODE0 Data Accessory Recognition 0 nACC_SENSE...

  • Page 9: Test Points

    INTERFACES AND TEST POINTS 2.1.3 SIM Interface Signal SIMPWR (3V / 5V) SIM_RST SIM_CLK Not connected Ground Not connected SIM-I/O Not connected 2.2. Test Points 2.2.1 Main PCB TP No. Signal TP No. Signal TP601 nAUDIO_ON TP637 EXT_PWR TP602 DTR/DATA_MODE1 TP638 BL[1] TP603...

  • Page 10: Keypad Pcb

    INTERFACES AND TEST POINTS 2.2.2 Keypad PCB TP No. Signal TP801 VBAT TP802 DS801 / R801 TP803 DS802 / R801 TP804 DS803 / R802 TP805 DS804 / R802 TP806 DS805 / R803 TP807 DS806 / R803 TP808 DS807 / R804 TP809 DS808 / R804 TP810...

  • Page 11: Rf Overview

    RF OVERVIEW 3 RF OVERVIEW 3.1. Introduction 3.1.1 General Specifications The telephone is a Dual Band product incorporating two switchable transceivers, one for the GSM 900 band and another for the GSM 1800 (DCS 1800) band. The transmit and receive bands for the mobile are given in the table below: GSM 900 890-915 MHz 935-960 MHz...
  • Page 12 RF OVERVIEW Dual Rx Bright III RF IC LC BPF IF SAW SAW BPF HD155133TFEB 225 MHz 935 ~ 960 MHz 1,805 ~ 270 MHz 45 MHz 1,880 MHz GSM: 1,160 ~ 1,185 MHz DCS: Rx 1,580 ~ 1,655 MHz Tx 1,575 ~ 1,650 MHz Synthe Synthe...
  • Page 13 RF OVERVIEW Rx 1st IF Rx 2nd IF 1805-1880 MHz 45 MHz 225 MHz 90 MHz 45 MHz 270 MHz ÷6 ÷2 Rx RF LO 1580-1655 MHz ÷2 Fdiff 135 MHz IF LO VCO 270 MHz 540 MHz ÷2 Tx RF LO 1575-1650 MHz 135 MHz Fcomparison...
  • Page 14 RF OVERVIEW This page is intentionally blank. Issue 1 Section 3 MCUK001001G8 Revision 0 – 10 – Technical Guide...

  • Page 15: Transmitter

    TRANSMITTER 4 TRANSMITTER 4.1. Introduction This section provides a technical description of the transmitter circuits of the Main PCB. A circuit diagram of the whole system is provided in the Service Manual. 4.2. Uplink Frequencies These assemblies MUST be performed by qualified service personnel at an authorised service centre. The following Warnings and Cautions MUST be observed during all disassembly / reassembly operations: 4.2.1 GSM 900...

  • Page 16: Functional Description

    TRANSMITTER 4.3. Functional Description 4.3.1 Circuit Description Dual Band Transceiver (PART) U104 Modulator U150 Mixer Antenna Diplexer Phase + Sw. U102 Detector Coupler E101 Loop Dual Band Filter Tx VCO U103 1800 Coupler E102 Dual Band PA U101 10220-1 Figure 4.1: Transmitter Block Diagram The transmitter design is based on an IQ Modulator and operates at Class 4 (2W) in the GSM 900 band and at Class 1 (1W) in the GSM 1800 band.
  • Page 17 TRANSMITTER 4.3.2. GSM 900 Signal Levels The transmitter signal levels for the GSM 900 band are as follows: 30.0 10.0 -10.0 -30.0 -50.0 Splitter Attenuator HP Filter Coupler Switch H/F Switch Wanted 10218-1 Figure 4.2: GSM 900 Transmitter Signal Levels 4.3.3.
  • Page 18 TRANSMITTER This page is intentionally blank Issue 1 Section 4 MCUK001001G8 Revision 0 – 14 – Technical Guide...

  • Page 19: Receiver

    RECEIVER 5 RECEIVER 5.1. Introduction This Section provides a technical description of the receiver section of the Main PCB. A complete circuit diagram is provided in the Service Manual. 5.2. Downlink Frequencies 5.2.1. GSM 900 The downlink frequencies for the GSM 900 band are as follows: CHANNEL DOWNLINK FREQUENCIES (MHz) NUMBERS...

  • Page 20: Functional Description

    RECEIVER 5.3. Functional Description 5.3.1. Dual Band Receiver IC The main building block for the Dual Band receiver is the Hatchi Bright III GSM transceiver IC (U104). The receiver is a superheterodyne type with the 1st IF at 225 MHz and 2nd IF at 45 MHz. The intermediate frequencies are common to both frequency bands.
  • Page 21 RECEIVER IF amplifier output is fed into two quadrature mixers where it is converted down to baseband. The IF LO is generated at 540 MHz using an external VCO module. An on-chip divider on the Bright III IC divides this signal by six and then by two. It also produces two outputs in quadrature to generate the baseband I and Q signals.
  • Page 22 RECEIVER This page is intentionally blank. Issue 1 Section 5 MCUK001001G8 Revision 0 – 18 – Technical Guide...

  • Page 23: Baseband Overview

    BASEBAND OVERVIEW 6 BASEBAND OVERVIEW 6.1. Introduction The main Baseband circuitry is located within the RF circuits on the Main PCB, while the keypad, LCD and backlights are located on the Keypad PCB. A metallised plastic chassis is used to separate the Main and Keypad PCBs. The continuous chassis design is important for EMC purposes.

  • Page 24: Subscriber Identity Module

    BASEBAND OVERVIEW 6.3. Subscriber Identity Module (SIM) The SIM interface is designed to support 3 V and 5 V SIMs. HERCULES operates from a 2.85 V supply. OMEGA has level translators for 3 V and 5 V SIMs. $FFFE:0000 REG_SIM_CMD SIM control register Write only $FFFE:0002...

  • Page 25: Lcd

    BASEBAND OVERVIEW 6.6. LCD The LCD modules consists of a LCD glass and driver chip on a flexible PCB with connection to the Main PCB. The LCD has a format of 96 x 65 pixels to provide maximum information. It can display up to three lines of 16 characters plus two lines of icons.

  • Page 26: Microphone

    BASEBAND OVERVIEW 6.8. Microphone To provide improved speech pick-up, noise immunity and reduced echo, the microphone is a noise cancelling type which requires a FLIP for acceptable frequency response. The GSM Standard requires that when in handheld mode, the transmitter audio frequency response must fit within the mask shown below: 1000 10000...

  • Page 27: Speaker

    BASEBAND OVERVIEW 6.9. Speaker 6.9.1. Handheld Mode Because OMEGA is powered from a 2.7 V supply, a low impedance (dynamic) speaker must be used. The GSM Standard requires that the receiver audio frequency response must fit within the mask shown below. 1000 10000 Frequency (Hz)

  • Page 28: Timers

    BASEBAND OVERVIEW Ringing Tones are played through the DTHF speaker. The volume level of ringing tones is defined by the 6-bit PWM register setting in HERCULES I/O and by the ASIC IC. Timer 1 in HERCULES is used to time the period between switching the ringing on, and off to make the tone. For more complex buzzer ringing tones, the buzzer volume level can also be altered after each time-out of Timer 1.

  • Page 29: Acessory Asic

    BASEBAND OVERVIEW 6.12. Accessory ASIC 6.12.1. General Information U602 OMEGA (part) U604 ACC. ASIC RTC IC uWIRE I/F HEADSET JACK (not GD52) DRIVER PATH ACC. I/F CTRL DTHF BACKLIGHT DRIVER DRIVER UART UART CTLR Modem ACCESSORY CONNECTOR 10206-1 Figure 6.7: Accessory ASIC (U604) The Accessory ASIC (U604) consists of the following: •...
  • Page 30 BASEBAND OVERVIEW Serial Interface bit Bit function R0 Bit function R1 Bit function R2 Bit function R3 CHARGING_LED Not used PWM_ON nPHF_DETECT BLCONT4 DTHF ON EN_UART SENSE1 BLCONT3 HF_SELECT BUCONT4 SENSE1 BLCONT2 HF_RX_ON BUCONT3 AUDIO_CONT1 BLCONT1 HF_TX_ON BUCONT2 AUDIO_CONT0 (nACC_SENSE) PA_ON_SEL MIC_BIAS BUCONT1...

  • Page 31: Hercules

    HERCULES 7 HERCULES 7.1. Introduction Hercules contains the DSP, CPU and GSM timing functions, and many peripheral functions. The software for the DSP is contained in masked ROM. U601 HERCULES-ROM2 LEAD Megamodule BASEBAND SERIAL I/F TEST & PLL & JTAG JTAG EMULATION CLOCKS...

  • Page 32: Memory Interface

    HERCULES 7.4. Memory Interface The memory interface allows the 32-bit CPU access to 16 and 8-bit devices, and allows the addition of wait states to memory access. The memory interface allows between 0 and 31 wait states to be added. The ROM area is hardware write-protected, a FLASH write enable bit in the ROM wait state configuration register can be used to enable write access to the ROM area.

  • Page 33: Interrupt Handler

    HERCULES 7.5. Interrupt Handler The ARM CPU has two interrupts. FIQ is a Fast non-maskable interrupt and IRQ is a standard maskable interrupt. HERCULES has 16 interrupt sources. The interrupt handler assigns priorities to these interrupts and routes them to either the FIQ or IRQ inputs of the ARM CPU.

  • Page 34: General Purpose I/O

    HERCULES 7.6. General Purpose I/O The general purpose I/O includes keypad scanning, two PWM ports and 16 general purpose I/O lines. The I/O lines are multiplexed onto other functions - if one I/O is selected, the other function is unavailable. I/O Pin Assignments Signal Function...

  • Page 35: Omega

    OMEGA 8 OMEGA 8.1. Introduction Omega contains the interface circuits to the Audio, RF and auxiliary functions for the baseband circuit. U602 OMEGA 10-Bit BURST DIFF GMSK I DAC 10-Bit STORE ENCODE Q DAC ANTIALIASING FILTER SIGMA-DELTA FILTER ANTIALIASING FILTER SIGMA-DELTA FILTER PARAMP...

  • Page 36: Downlink I And Q

    OMEGA 8.3. Downlink I and Q Offset Offset Calibration Register DLIP Antialiasing Sigma_Delta SINC Filter Modulator Filter Filter DLIN To baseband serial interface fs1=6.5 MHz fs2=1.08 MHz fs3=270.8 kHz DLQP Antialiasing Sigma_Delta SINC Filter Modulator Filter Filter DLQN Offset Offset Calibration Register 10090-1...

  • Page 37: Afc Control

    OMEGA 8.5. AFC Control The 13 MHz system clock frequency is controlled by a 13-bit sigma-delta D/A in the OMEGA chip. 3/5V 1-BIT DAC 13-BIT DIGITAL & LOW-PASS MODULATOR FILTER OUTPUT SWING CONTROL VTCXO RINT1 RINT2 PROGRAMMATION REGISTER CEXT 10092-1 Figure 8.5: AFC Block Diagram 8.6.

  • Page 38: Auxiliary A/D

    OMEGA 8.6.2. Voice Downlink Path Auxiliary AUXO Amplifier EARP Smoothing From voice Earphone Sigma_Delta SINC One bit Filter serial Bandpass Interpolation Volume Cont interface EARN Modulator Amplifier Filter Filter & PGA fs1=1MHz fs2=40KHz fs3=8.0KHz 10094-1 Figure 8.7: Voice ADC Block Diagram - Downlink Path 8.7.

  • Page 39: Power Supplies

    POWER SUPPLIES 9 POWER SUPPLIES 9.1. Introduction This section describes the Power Supply Unit (PSU) used on the Main PCB and the method by which it is controlled. The Battery life during GSM 1800 operation benefits from lower transmit power and higher PA efficiency and is therefore more efficient than when operating in GSM 900.

  • Page 40: Power-Down

    POWER SUPPLIES Battery Voltage (V) Temp Reading EXT_PWR Result X (don't care) invalid <VBAT + 0.4 V Power-down (battery fault) invalid >VBAT + 0.4 V Sleep (battery fault) <3.0 <VBAT + 0.4 V Power-down (low battery) <3.5 valid <VBAT + 0.4 V >3.5 valid 9.3.3.

  • Page 41: Power Management

    POWER SUPPLIES Battery Current mode nACC_SENSE KBR0 EXT_PWR power-down New mode Voltage < VBAT + 0.4 V normal emergency < VBAT + 0.4 V normal active <3.4 V > VBAT + 0.4 V normal restricted active <3.5 V > VBAT + 0.4 V normal charge active...
  • Page 42 POWER SUPPLIES IPTAT OSCAS VRPC_STAT VPRC_STAT RESPWRONZ ON_OFF DEBOUNCE TESTRESET INT1 RPWON INT2 PWON RSTZ RTC ALARM Enable REG VREF, IREF Enable CP UVLO, IPTAT VREF IREF UVLO VPRC_ST BGTRIM BGTRIM VCHG MADC XTPWR 1.5 scaling 10 bits ERROR AMPLIFIER 10 bit DAC Calibration ICHG...

  • Page 43: Voltage Regulation

    POWER SUPPLIES 9.5.3. Power On-Off Control The hardware model for the Power On/Off Control and Power Source Failure functions can be expressed by the following boolean expression and logic diagram. On/Off = VBAT + ((nPOWKEY · RTC_INT · EXT_PWR) + nLVA_INT) nLVA_INT nPOWKEY nIGNITION...
  • Page 44 POWER SUPPLIES DV28VB: Power Supply for Hercules ASIC I/O Voltage: 2.9 V ±0.2 V Current: 120 mA max. Dropout: 150 mV max (max. load) Provides power for the ASIC I/Os in Hercules. D18V: Power Supply for Hercules LMM block Voltage: 1.8 V ±0.15 V Current: 120 mA max.
  • Page 45 POWER SUPPLIES 9.5.7. Accessory Control The telephone can detect accessories connected to the I/O connector and control the power supply to them. These are controlled by the signal lines detailed in the following table. Note that the software needs to set ACC_PWR high before checking DATA_MODE0 and DATA_MODE1. Inputs (Pin No.) Outputs Peripherals...
  • Page 46 Printed in UK UK001001500PJ...

Table of Contents