LG GB161 Service Manual

LG Electronics

Service Manual

GB161

1

Table Of Contents

1. INTRODUCTION…………………...3

1.1 Purpose…………………………………3

1.2 Regulatory Information………………..3

2. PERFORMANCE…………………..5

2.1 H/W Features…………………………..5

2.2 S/W Features…………………………..6

3. TECHNICAL BRIEF………………19

3.1 Digital Main Processor(

3.2 Power Amplifier Module(

3.3 Transceiver Module(

3.4 Memory Module (

3.5 Antenna Switch Module (

3.6 LCD Interface………………………....35

3.7 SIM Card Interface…..……………….37

3.8 KEYPAD Interface……………….…...38

3.9 Battery Charging Block Interface…...39

3.10 Audio Interface……………….….….40

TV00570002CDGB)

MT6223

SKY77518

AD6548

)…………..28

B9308

)……….19

)…....27

……..31

)……...34

4.11 Speaker Trouble……………….65

4.12 Headphone Trouble…………...68

4.13 Charging Trouble……………...71

4.14 Torch LED Trouble…………….73

4.15 RF Trouble……………………..75

5. DOWNLOAD………………....87

5.1 Download setup…………………87

5.2 Download Process……………...88

6. BLOCK DIAGRAM…………..96

7. CIRCUIT DIAGRMA………….97

8. BGA IC PIN Check…………102

9. PCB LAYOUT………………..104

10.ENGINEERING MODE…….105

3.11 Vibrator Interface….………………...41

3.12 Key LED Interface…………………..42

4. TROUBLE SHOOTING…………..43

4.1 Power On Trouble……………………43

4.2 SIM Card Trouble…………………….46

4.3 Vibrator Trouble………………………48

4.4 Keypad Trouble………………………50

4.5 RTC Trouble………………………….52

4.6 Key Backlight Trouble……………….54

4.7 LCM Backlight Trouble……………...56

4.8 LCM Trouble……………….………...58

4.9 Microphone Trouble…………………60

4.10 Receiver Trouble…………………...62

11. CALIBRATION……………..109

11.1 Test Equipment Setup……….109

11.2 Calibration Steps……………..110

12. STAND ALONE TEST…….149

12.1 Test Configuration……………149

12.2 META tool Install process…...150

12.3 Rx Test………………………...154

12.4 Tx Test…………………………156

13. EXPLODED VIEW&

REPLACEMENT PART LIST....158

13.1 Exploded View………………..158

13.2 Replacement Part…………….160

2

1. INTRODUCTION

1.1 Purpose

This manual provides information necessary to repair, description and download the features

of this model.

1.2 Regulatory Information

A. Security

Toll fraud, the unauthorized use of telecommunications system by an unauthorized part(for

example ,persons other than your company’s employees, agents, subcontractors, or person

working on your company’s behalf) can result in substantial additional charges for your

telecommunications services.

System users are responsible for the security of own system. There are may be risks of toll

fraud associated with your telecommunications system. System users are responsible for

programming and configuring the equipment to prevent unauthorized use .The manufacturer

dose not warrant that this product is immune from the above case but will prevent unauthorized

use of common-carrier telecommunications service of facilities accessed through or connected

to it.

The manufacturer will not be responsible for any charges that result from such unauthorized

use.

B. Incidence of Harm

If a telephone company determines that the equipment provided to customer is faulty and

possibly causing harm or interruption in service to the telephone network, it should disconnect

telephone service until repair can be done. A telephone company may temporarily disconnect

service as long as repair is not done.

C. Changes in Service

A local telephone company may make changes in its communications facilities or procedure. If

these changes could reasonably be expected to affect the use of the this phone or compatibility

with the network, the telephone company is required to give advanced written notice to the user,

allowing the user to take appropriate steps to maintain telephone service.

D. Maintenance Limitations

Maintenance limitations on this model must be performed only by the manufacturer or its

authorized agent . The user may not make any changes and/or repairs expect as specifically

noted in this manual.

Therefore, note that authorized alternations or repair may affect the regulatory status of the

system and may void any remaining warranty.

3

E. Notice of Radiated Emissions

This model complies with rules regarding radiation and radio frequency emission as defined

by local regulatory agencies. In accordance with these agencies, you may be required to provide

information such as the following to the end user.

F. Pictures

The pictures in this manual are for illustrative purposes only; your actual hardware may look

slightly different.

G. Interference and Attenuation

Phone may interfere with sensitive laboratory equipment, medical equipment, etc.

Interference from unsuppressed engines or electric motors may cause problems.

H. Electrostatic Sensitive Devices

ATTENTION

Boards, which contain Electrostatic Sensitive Devices(ESD),are indicated by the

sign .

Following information is ESD handing:

. Service personnel should ground themselves by using a wrist strap when exchange system

boards.

. When repairs are made to a system board , they should spread the floor with anti-static mat

which is

also grounded .

. Use a suitable, grounded soldering iron .

. Keep sensitive parts in these protective packages until these are used.

. When returning system boards or parts like EEPROM to the factory, use the protective

packages as

described.

4

2. PERFORMANCE

2.1 H/W Features

Solution MT6223D Media Tek

Form Factor Bar type

Dimension (mm) 103x46x12.5 mm

RF Band Dual Band 900/1800 Internal Antenna

Data GPRS Class 12

Main Display 1.5” TFT 262K color, 128x128 Pixels

Battery 950 mA h

Camera No

Video player No

Video Recorder No

Audio player Yes

Loud Speaker Yes

Memory Size 128Mb NOR Flash +32Mb PSRAM

User Memory Yes 2M Bytes

WAP Yes V2.0

MMS Yes

OTA Yes

In flight mode Yes

Serial Interface

Same as

LG6/7/Sapphire-F

MP3/64

polyphonic Midi

5

2.2 S/W Features

2.2.1 General Features

Function Target Specification Parameter Support

Basic Display

RSSI

(6 Level, 0~5)

Battery Indicator (4 Level, 0~3) Y

Icons Indicator Y

Others reference to "Phone Personalization

Y

Setting"

Speech Codec FR/EFR/HR/AMR-NB Y

Keypad

Number of Keys: 21Key (include 12

alphanumeric/number keys (0-9,#,*), 4

function keys, 4 way navigation

Y

keys)

Clear key N

International Access (+)(long 0) Y

User Profile

(Audio Settings)

User Selectable and Customizable Profiles

(4 profiles: Normal, Meeting, Outdoor,

Vibrate only, Headset, Silent, Flight

Mode)

Y

Y

Follow common UI

Auto-detect and activated profiles (1

N

profile: Headset)

Key Tone

Key Tone Volume (6 Level - 0 ~ 5, 0 for

Y

Mute)

Key tone setting (4 sets: Silent, DTMF,

Y

Piano, English human voice, Spanish

human voice)

Ring Tone

Ring Tone Volume (6 Level - 0 ~ 5, 0 for

Y

Mute)

Built-in Ring Tone Pattern: 7 Not finalized

Y

Customizable Ring Tone Link: 5 Y

Intelligent Call Alert N

Digits To Sound Synthesizing Y

Alert Type

5 Types - Ring, Vibration Only, Vibration

Y

and Ring, Ring after vibration, Silent,

Light Only, Beep Once

6

Function Target Specification Parameter Support

Personal Information

Power On Tone

Built-in Ring Tone Pattern: 3 (include

Silent)

Power Off Tone

Built-in Ring Tone Pattern: 3 (include

Silent)

Message Tone

Built-in Ring Tone Pattern: 6 (include

Silent)

Warning Tone

Built-in Ring Tone Pattern:

1 (Only On/Off operation)

Error Tone

Built-in Ring Tone Pattern:

1 (Only On/Off operation)

Camp On Tone

Y

Y

Y

Y

Y

Management

Built-in Ring Tone Pattern:

1 (Only On/Off operation)

Connect Tone

Built-in Ring Tone Pattern:

1 (Only On/Off operation)

Status LED N

Charger-in Status LED

Answer Mode Y

Any Key Answer Y

Auto (Only available for headset mode

while headset plugged in)

Calendar - Month view only Y

Scheduler - 6 fields (Date, Start time,

End time, Subject, Alarm, Repeat,

expiration date)

To do list - 4 fields (Due date, note,

Y

Y

N

Y

Y

Y

Follow common UI

Priority, Status)

Alarm

5 sets of Alarm

7

Tools and Utilities

Y

Function Target Specification Parameter Support

6 major fields for each set:

On/Off, Time, Repeat type, Audio option

of Tone, Snooze, Alert type

World Clock

Cities list: 74 cities Y

Daylight saving time support: activated by

user selection(only for world clock)

Home city set Y

Calculator

Addition, Subtraction, Multiplication,

Division

Unit Converter

Weight, Length Y

Currency Converter

Health N

BMI, Menstrual

Y

Y

Y

N

N

Phone

Personalization

Setting

Security Phone Lock Y

Greeting Text Y

Shortcuts Y

Flight Mode Y

Time and Date Setting Y

Wallpaper Y

Screen Saver

Power On Animation Y

Power Off Animation Y

LCD Backlight Y

PLMN/Service Indicator (Display of

PLMN Name/Service Provider Name from

SIM)

Date Time Display Y

Own Number Display Y

Restore Factory Default Setting Y

Y

N

Input Method

Engine

T9 Y

Support Language

8

Function Target Specification Parameter Support

2.2.2 Networking Features

Function Target Specification Parameter Support

GPRS GPRS Multi slot Class 12 Y

Data Service BS 24 - 26 (2400-9600 bit/s),

Depends on customer and market

requirement.

Total supported languages will be limited

to memory condition.

Predictive word input Y

2 embedded game Y Game

Settings:

BGM, Sound Effect, Vibration

asynchronous, non-transparent, UDI.

CSD rate up to 9.6K bit/s

Y

N

Y

Call History

Call Cost

GPRS Counter

Last Dialed Number : 50 Y

Last Received Number : 50 Y

Last Missed Number : 50 Y

Scratch Pad Memory(Save an input

number in call) : 1

Last Call Time Y

Total Dialed Call Time Y

Total Received Call Time Y

Last Call Cost Y

Total Cost Y

Max Cost

Price Per Unit Y

Last Sent (unit in Byte) Y

Last Received (unit in Byte) Y

All Sent (unit in Byte) Y

All Received (unit in Byte) Y

Y

NNNN

Call Management

Call Swap Y

Call Retrieve Y

Automatic Redial Y

Speed Dialing Y

9

Function Target Specification Parameter Support

Last Number Redial Y

Call

Related Supplement

ary Services

Call Hold Y

Call Waiting Y

Calling Line Identity Presentation Y

Calling Line Identity Restriction Y

Connected Identification Restriction Y

Call Divert All voice Calls Y

Call Divert if unreachable Y

Call Divert if no answer Y

Call Divert if busy Y

Call Divert all data calls Y

Cancel all divert Y

Call Barring All Outgoing Calls Y

Call Barring All Outgoing International

Calls

Call Barring All outgoing International

except home

Y

Phone Book

Call Barring All incoming Calls Y

Call Barring All incoming Calls when

roaming

Multi-party Call (up to 7 calls, 5 in

conference, 1 on held, 1 waiting)

Line switching (Line1, Line2)

Call reminder (On/Off Single, Periodic)

Closed User Group

Quick Search (Notice: Quick search

function only works in Phonebook, SMS

and MMS. In other application, this

phone supports regular search.)

Alpha Store and Recall Y

Access Phone Book in call Y

Copy & Move Y

Fixed Dial Number Y

Service Dial Number Y

Speed Dial Number Y

SOS Number Y

Y

Y

Y

Y

10

Function Target Specification Parameter Support

Group1, Group2,

Own Numbers: User can change the own

Message Indication Type refer

Notice: This phone doesn’t support video

Entry : 500 names (10 fields – Name,

Mobile, Home, Email address, Office

number, Fax number, Associate Picture,

Associate Sound, Caller group, memo)

Caller Group-7 caller group- Friends,

Family, College, VIP,

No Group (4 fields – Name, Ring,

Picture,

Member list)

numbers of handset. (Sets of own

numbers depends on SIM)

vCard: (Edit, Send and Receive. 7

fields – Name, Mobile, Home, Company

Name, Email Address, Office Number,

Fax Number)

Y

Y

Y

Version 2.1 Y

Message

Note: This phone doesn’t support phone

number search.

SMS

Standard SMS Y

SMS Reply Path Y

SMS Delivery Report

Valid period (1 hour/6 hours/12

hours/1 day/3 days/1 week/Maximum)

Message Type (Text, Fax, Page,

Email)

to GSM 03.40

Basic text-only SMS as described in

3GPP TS 23.040 R5

ring tone via SMS

SMS Character Sets Support

GSM7 Y

UCS-2 Y

EMS

EMS Standard as described in 3GPP TS

23.040 R5 excluding WVG

Y

Y

Y

Y

Y

Y

11

Function Target Specification Parameter Support

bit small image 16x16 pixels black and

bit image up

EMS Text Format

Text Style : Normal, Bold, Italic,

Underlined, Strikethrough

Text Alignment : Left, Right, Center Y

Text Size : Normal, Large, Small Y

EMS Image Support

1-

white

1-bit large image 32x32 pixels black and

white

1-bit variable image in single SMS

packet

Extended black and white 1-

to 255x255 pixels

Extended 6-bit image up to 255x255 Y

Pre-defined animation Y

User-defined small animation 8x8 pixel

4-frame black and white

User-defined large animation 16x16

pixel 4-frame black and white

Pre-defined sound Y

User-defined i-Melody up to 128 bytes Y

Y

Y

Y

Y

Y

Y

Y

LZSS compression algorithm Y

Re-use extended object Y

Object Distribution Y

User Prompt Indicator Y

Hyperlink format element Y

Extended Object Distribution Y

EMS Character Sets Support

GSM7 Y

UCS-2 Y

EMS Miscellaneous

SMS Concatenation ( 8 Segments for

MT/MO)

SMS Compression Y

MMS

Y

Y

Y

Y

12

Function Target Specification Parameter Support

MMS Standard as described in 3GPP TS

23.140 V4.8.0

Extract media from Message Y

Insert Media into message Y

OTA provisioning partially support

(Network Profile setting

Auto download mode Y

Manual download mode Y

Operator can pre-configure the delivery

mode

MMS notification with icon or Pop-up

message display)

MMS Message Format

MMS SMIL (A subset of SMIL descried

in the MMS Conformance Document

1.2)

MMS Character Sets Support

US-ASCII Y

Unicode Y

ISO-8859-1 Y

UTF-16

Y

Y

Y

Y

Y

Y

Y

N

UTF-8 Y

MMS Images Support

WBMP Wireless bitmap Y

GIF87

GIF89a

JPEG (sw decode) Y

MMS Sound Formats Support

WAV Y

AMR Y

MIDI Y

MP3 Y

MMS Miscellaneous

Multipart binary MIME Y

Storage

Y

Y

Y

Y

Y

Y

13

Function Target Specification Parameter Support

Separated Inbox folder for SMS and

MMS

Separated Outbox folder for SMS and

MMS

Total 300 SMS in the storage of phone

plus SIM including Inbox, outbox, sent

and draft

Total max 100 (up to 300KB)MMS in

the phone storage including Inbox, draft

and Outbox

Notice: Total MMS count need depends

on user memory space.

Common Operation

Write Message Y

Read Message Y

Edit Message

Y

Y

Y

Y

Y

Y

Cell Broadcast

(For MMS, Edit only conformance

messages, unknown media not

supported, unknown SMIL not

supported)

Reply Message Y

Send Message Y

Delete Message Y

Forward Message Y

Use Sender's Number Y

Message Templates Y

Extract media from Message

(MMS/EMS)

Store Media (MMS/EMS) Y

Delete Media (MMS/EMS) Y

Read Cell Broadcast Y

Cell Broadcast Mode: Receive On/Off Y

Y

Cell Broadcast Message Language Y

Channel Setting Y

Automatic Network Selection Y Network

Manual Network Selection Y

14

Function Target Specification Parameter Support

Function

(Only available when external memory card

Network Service Status Y

Preferred Network (User definition) Y

GPRS connection mode selection:

Always, When Needed

SIM

Common Operation

SIM Application Toolkit (Release 98

Class 2 certified)

Prepaid SIM operation Y

Security

PIN Y

Personalization (Service provider lock,

Network lock)

DTMF Signaling Y DTMF

DTMF Enable & Disable Y

2.2.3 Multimedia Features

Y

Y

Y

Y

Y

Target Specification Parameter Support

Camera N

Image Viewer

Thumbnail supported

Browse Style:

Y

Y

List, Matrix

View Y

Forward:

Y

To Wallpaper, Phonebook, Screen Saver,

Power On Display, Power Off Display,

MMS, Bluetooth

Rename Y

Delete Y

Delete All Y

Sort:

Y

By Name, Type, Date, Time, Size, None,

Storage Selection:

Get list from Phone, Memory card

supported)

Image Format Support

15

N

Function

Target Specification Parameter Support

(Only available when external memory card

Music Player

(follow common UI)

JPEG Baseline (SW decode) Y

GIF87a Y

GIF89a Y

WBMP Y

BMP Y

Play Y

Pause Y

Resume Y

Stop Y

Next Y

Previous Y

Storage Selection:

Get list from Phone, Memory card

N

supported)

Auto-Generate Playlist Y

Skin: 2 skins Y

Repeat Mode:

Off, One Song, All Songs

Shuffle Play Y

Background Play Y

Equalizer Setting: 8 sets

Normal, Bass, Dance, Classical, Treble,

Party, Pop, Rock

Volume Control:

20 level (0 ~ 19, 0 for Mute)

Playlist Edit:

Add, Remove, Remove All

Sound Format Support Y

MP3 Y

Y

Y

Y

Y

Video Player N

AMR Y

MIDI Y

WAV Y

16

Function

Target Specification Parameter Support

(Only available when external memory card

elody file, so the last chosen instrument will be used

(Only available when external memory card

Video Recorder N

Sound Recorder

Melody Compose

Storage Selection:

N

Phone, Memory card

supported)

Encode Format:

Y

AMR, WAV

Record Y

Pause Y

Resume Recording Y

Stop Y

Edit

Play

Save

Instrument Selection: 10 types

Y

Y

Y

Y

Piano, Guitar, Violin, Saxophone, Steel

Drums, Flute, Harmonica, Trumpet, Music

(Not available)

FM Radio

Box, Xylophone

Play Speed:

Y

Fast, Normal, Slow

[Notice] Melody composer only support one instrument in

one m

to play this melody file

Frequencies: 87.5 ~ 108.0

Y

N

Skin: 2 skins

User definable Preset Channel List N

Channel Auto Search N

Background Play N

Record N

Record Format:

N

AMR(0.7K/s) Limit:2850sec (Based on

user memory)

Record Storage:

Only Memory Card

N

Phone memory, SD card (Option, follow

common UI)

supported)

Only in phone

memory,

not selectable

17

Function

Target Specification Parameter Support

Preset Channel List generated by auto

N

search

JAVA N

2.2.4 Connectivity Features

Function Target Specification Parameter Support

WAP

WAP 2.0 Spec. Y

WAP Push OTA/Message Y

WAP Provisioning Service Y

CSD/GPRS data connection Y

Bookmark Y

Wireless Telephony Application (WTA)

Y

support:

Only Public WTA support, supported

functions listing below -

* Make a telephone call

* Send a string of DTMF tones over an

established voice connection

* Add an entry to the telephone book of

the device

Supports WML, WCSS, XHTML mp Y

Mass Storage Device N USB

Virtual COM (PCSync)

N

18

3. TECHNICAL BRIEF

3.1 Digital Main Processor

Figure.3-1-1 MT6223 FUNCTIONAL BLOCK DIAGRAM

19

3.1.1 System Overview

MT6223D is an entry level chipset solution with class 12 GPRS/GSM modem. It integrates not

only analog baseband but also power management blocks into one chip and can greatly reduce the

component count and make smaller PCB size. Besides, MT6223D is capable of SAIC (Single

Antenna Interference Cancellation) and AMR speech.

Based on 32 bit ARM7EJ-STM RISC processor, MT6223D provides an unprecedented

platform for high quality Modem performance.

Platform

MT6223D runs the ARM7EJ-STM RISC processor at up to 52Mhz, thus providing best trade-off

between system performance and power consumption.

For large amount of data transfer, high performance DMA (Direct Memory Access) with

hardware flow control is implemented, which greatly enhances the data movement speed while

reducing MCU processing load.

Targeted as a modem-centric platform for mobile applications, MT6223D also provides hardware

security digital rights management for copyright protection. For further safeguarding, and to protect

manufacturer’s development investment, hardware flash content protection is also provided to

prevent unauthorized porting of software load.

Memory

MT6223D supports up to 2 external state-of-the-art devices through its 16-bit host interface.

Devices such as burst/page mode Flash, page mode SRAM, and Pseudo SRAM are supported. To

minimize power consumption and ensure low noise, this interface is designed for flexible I/O

voltage and allows lowering of supply voltage down to 1.8V. The driving strength is configurable for

signal integrity adjustment. The data bus also employs retention technology to prevent the bus

from floating during turn over.

Multi-media

MT6223D utilize high resolution audio DAC, digital audio, and audio synthesis technology to

provide superior audio features., e.g. MP3 ring tone.

Connectivity, and Storage

MT6223D supports UART as well as Bluetooth interface. Also, necessary peripheral blocks are

embedded for a voice centric phone: Keypad Scanner with the capability to detect multiple key

presses, SIM Controller, Alerter, Real Time Clock, PWM, Serial LCD Controller, and General

Purpose Programmable I/Os.

Audio

Using a highly integrated mixed-signal Audio Front-End, architecture of MT6223D allows for

easy audio interfacing with direct connection to the audio transducers. The audio interface

integrates D/A and A/D Converters for Voice band, as well as high resolution Stereo D/A

Converters for Audio band. In addition, MT6223D also provides Stereo Input and

Analog Mux. MT6223D also supports AMR codec to adaptively optimize speech and audio quality.

20

Radio

MT6223D integrates a mixed-signal Baseband front-end in order to provide a well-organized

radio interface with flexibility for efficient customization. It contains gain and offset calibration

mechanisms, and filters with programmable coefficients for comprehensive compatibility control on

RF modules. This approach also allows the usage of a high resolution D/A Converter for controlling

VCXO or crystal, thus reducing the need for expensive TCVCXO. MT6223D achieve great

MODEM performance by utilizing 14-bit high resolution A/D Converter in the RF downlink

path. Furthermore, to reduce the need for extra external current-driving component, the driving

strength of some BPI outputs is designed to be configurable.

Debug Function

The JTAG interface enables in-circuit debugging of software program with the ARM7EJ-S core.

With this standardized debugging interface, MT6223D provides developers with a wide set of

options in choosing ARM development kits from different third party vendors. Low Power Features

MT6223D offers various low-power features to help reduce system power consumption. These

features include Pause Mode of 32KHz clocking at Standby State, Power Down Mode for individual

peripherals, and Processor Sleep Mode. In addition, MT6223D are also fabricated in advanced low

leakage CMOS process, hence providing an overall ultra low leakage solution.

Power Management

MT6223D integrates all regulators that a voice-centric phone needs. Seven LDOs optimized for

Specific GSM/GPRS baseband sub-systems are included, and a RF transceiver needed LDO is

also built-in. Besides Li-Ion battery charge function, SIM card level shifter interface, two open-drain

output switches to control the LED and vibrator are equipped. Other power management schemes

such as thermal overload protection, Under Voltage Lock-out Protection (UVLO), over voltage

protection and oower-on reset and start-up timer are also MT6223D features. Besides, 3 NMOS

switches controlling the RGB LEDs are also embedded to reduce BOM coount.

Package

The MT6223D device is offered in 9mm×9mm, 224-ball,

0.5 mm pitch, TFBGA package.

3.1.2 Platform Feature

General

Integrated voice-band, audio-band and base-band analog front ends

TFBGA 9mm×9mm, 224-ball, 0.5 mm pitch package

MCU Subsystem

ARM7EJ-S 32-bit RISC processor

High performance multi-layer AMBA bus

Java hardware acceleration for fast Java-based games and applets

Operating frequency: 26/52 MHz

21

Dedicated DMA bus

7 DMA channels

320K bits on-chip SRAM

On-chip boot ROM for Factory Flash Programming

Watchdog timer for system crash recovery

3 sets of General Purpose Timer

Circuit Switch Data coprocessor

Division coprocessor

External Memory Interface

Supports up to 2 external devices

Supports 16-bit memory components with maximum size of up to 128M Bytes each

Supports Flash and SRAM/PSRAM with Page Mode or Burst Mode

Industry standard serial LCD Interface

Supports multi-media companion chips with 8/16 bits data width

Flexible I/O voltage of 1.8V ~ 2.8V for memory interface

Configurable driving strength for memory interface

User Interfaces

5-row × 7-column keypad controller with hardware scanner

Supports multiple key presses for gaming

SIM/USIM Controller with hardware T=0/T=1 protocol control

Real Time Clock (RTC) operating with a separate power supply

General Purpose I/Os (GPIOs)

2 Sets of Pulse Width Modulation (PWM) Output

Alerter Output with Enhanced PWM or PDM

6 external interrupt lines

Security

Supports security key and 59 bit chip unique ID

Connectivity

3 UARTs with hardware flow control and speed up to 921600 bps

DAI/PCM and I2S interface for Audio application

Low Power Schemes

Power Down Mode for analog and digital circuits

Processor Sleep Mode

Pause Mode of 32KHz clocking at Standby State

3-channel Auxiliary 10-bit A/D Converter for application usage other than battery monitoring

Power and Supply Management

2.8V to 5.5V Input Range

Charger Input up to 8V

Seven LDOs Optimized for Specific GSM

22

Sub-systems

One LDO for RF transceiver

High Operation Efficiency and Low Stand-by Current

Li-Ion Battery Charge function

SIM Card Interface

Two Open-Drain Output Switches to Control the LED and Vibrator

Three NMOS switches to control RGB LEDs

Thermal Overload Protection

Under Voltage Lock-out Protection

Over Voltage Protection

Power-on Reset and Start-up Timer

Test and Debug

Built-in digital and analog loop back modes for both Audio and Baseband Front-End

DAI port complying with GSM Rec.11.10

JTAG port for debugging embedded MCU

3.1.3 MODEM Features

Radio Interface and Baseband Front End

GMSK modulator with analog I and Q channel outputs

10-bit D/A Converter for uplink baseband I and Q signals

14-bit high resolution A/D Converter for downlink baseband I and Q signals

Calibration mechanism of offset and gain mismatch for baseband A/D Converter and D/A

Converter

10-bit D/A Converter for Automatic Power Control

13-bit high resolution D/A Converter for Automatic Frequency Control

Programmable Radio RX filter with adaptive bandwidth control

Dedicated Rx filter for FB acquisition

2 Channels Baseband Serial Interface (BSI) with 3-wire control

Bi-directional BSI interface. RF chip register read access with 3-wire or 4-wire interface.

10-Pin Baseband Parallel Interface (BPI) with programmable driving strength

Multi-band support

Voice and Modem CODEC

Dial tone generation

Voice Memo

Noise Reduction

Echo Suppression

Advanced Sidetone Oscillation Reduction

Digital sidetone generator with programmable gain

23

Two programmable acoustic compensation filters

GSM/GPRS quad vocoders for adaptive multirate (AMR), enhanced full rate (EFR), full rate (FR) and

half rate (HR)

GSM channel coding, equalization and A5/1, A5/2 and A5/3 ciphering

GPRS GEA1, GEA2 and GEA3 ciphering

Programmable GSM/GPRS Modem

GSM Circuit Switch Data

GPRS Class 12

Voice Interface and Voice Front End

Two microphone inputs sharing one low noise amplifier with programmable gain and automatic

gain control (AGC) mechanism

Voice power amplifier with programmable gain

2nd order Sigma-Delta A/D Converter for voice uplink path

D/A Converter for voice downlink path

Supports half-duplex hands-free operation

Compliant with GSM 03.50

3.1.4 Multi-Media Features

LCD Interface

Dedicated Serial Interface supports 1 external Serial interface for LCM

LCD Controller

Supports LCM format: RGB332, RGB444, RGB565, RGB666, RGB888

Supports LCD module with maximum resolution up to 176x220 at 16bpp

2 layer blending

Supports hardware display rotation for each layer

Audio CODEC

Wavetable synthesis with up to 64 tones

Advanced wavetable synthesizer capable of generating simulated stereo

Wavetable including GM full set of 128 instruments and 47 sets of percussions

PCM Playback and Record

Digital Audio Playback

Audio Interface and Audio Front End

Supports I2S interface

High resolution D/A Converters for Stereo Audio playback

Stereo analog input for stereo audio source

Analog multiplexer for Stereo Audio

FM Radio Recording

Stereo to Mono Conversion

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3.1.5 General Description

Figure3-1-2 details the block diagram of MT6223D. on a dual-processor architecture,

MT6223D integrates both an ARM7EJ-S core and 2 digital signal processor cores. ARM7EJ-S is

the main processor that is responsible for running 2G and 2.5G protocol software. Digital signal

processors handle the MODEM algorithms as well as advanced audio functions.

Except for some mixed-signal circuitries, the other building blocks in MT6223D are connected to

either the microcontroller or one of the digital signal processors.

Specifically, MT6223D consist of the following subsystems:

 Microcontroller Unit (MCU) Subsystem - includes an ARM7EJ-S RISC processor and

its accompanying memory management and interrupt handling logics.

 Digital Signal Processor (DSP) Subsystem - includes 2 DSP cores and their

accompanying memory, memory controller, and interrupt controller.

 MCU/DSP Interface - where the MCU and the DSPs exchange hardware and

software information.

 Microcontroller Peripherals - includes all user interface modules and RF control

interface modules.

 Microcontroller Coprocessors - runs computing-intensive processes in place of

Microcontroller.

 DSP Peripherals - hardware accelerators for GSM/GPRS/EGDE channel codec.
 Voice Front End - the data path for converting analog speech from and to digital

speech.

 Audio Front End - the data path for converting stereo audio from stereo audio source
 Baseband Front End - the data path for converting digital signal from and to analog

signal of RF modules.

 Timing Generator - generates the control signals related to the TDMA frame timing.
 Power, Reset and Clock subsystem - manages the power, reset, and clock

distribution inside MT6223D



LDOs, Power-on sequences, swicthes and SIM level shifters.

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Figure.3-1-2 MT6223 BLOCK DIAGRAM

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3.2 Power Amplifier Module (SKY77518)

Figure.3-2-1 SKY77518 FUNCTIONAL BLOCK DIAGRAM

The SKY77518-21 is a transmit and receive front-end module (FEM) with Integrated Power
Amplifier Control (iPAC.) for dual-band cellular handsets comprising GSM900 and DCS1800
operation.
Designed in a low profile, compact form factor, the SKY77518-21 offers a complete Transmit
VCO-to- Antenna and Antenna-to-Receive SAW filter solution. The FEM also supports Class 12
General Packet Radio Service (GPRS) multi-slot operation.

The module consists of a GSM900 PA block and a DCS1800 PA block, impedance-matching

circuitry for 50 Ω input and output impedances, TX harmonics filtering, high linearity and low
insertion loss PHEMT RF switches, diplexer and a Power Amplifier Control (PAC) block with

internal current sense resistor. A custom BiCMOS integrated circuit provides the internal PAC
function and decoder circuitry to control the RF switches. The two Heterojunction Bipolar Transistor
(HBT) PA blocks are fabricated onto a single Gallium Arsenide (GaAs) die. One PA block supports
the GSM900 band and the other PA block supports the DCS1800 band. Both PA blocks share
common power supply pads to distribute current. The output of each PA block and the outputs to
the two receive pads are connected to the antenna pad through PHEMT RF switches and a
diplexer. The GaAs die, PHEMT die, Silicon (Si) die and passive components are mounted on a
multi-layer laminate substrate. The assembly is encapsulated with plastic overmold.

Band selection and control of transmit and receive modes are performed using two external
control pads. Refer to the functional block diagram in Figure 3-2-1 below. The band select pad (BS)
selects between GSM and DCS modes of operation. The transmit enable (TX_EN) pad controls
receive or transmit mode of the respective RF switch (TX = logic 1). Proper timing between transmit
enable (TX_EN) and Analog Power Control (VRAMP) allows for high isolation between the antenna
and TXVCO while the VCO is being tuned prior to the transmit burst.

The SKY77518-21 is compatible with logic levels from 1.2 V to VCC for BS and TX_EN pads,
depending on the level applied to the VLOGIC pad. This feature provides additional flexibility for
the designer in the selection of FEM interface control logic.

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3.3 Transceiver Module (AD6548)

Figure.3-3-1 AD6548 FUNCTIONAL BLOCK DIAGRAM

3.3.1 General Descriptions

The AD6548/9 provides a highly integrated direct conversion radio solution that combines, on a

single chip, all radio and power management functions necessary to build the most compact GSM

radio solution possible. The only external components required for a complete radio design are the

Rx SAWs, PA, Switchplexer and a few passives enabling an extremely small

cost effective GSM Radio solution.

The AD6548/9 uses the industry proven direct conversion receiver architecture of the OthelloTM

family. For Quad band applications the front end features four fully integrated programmable gain

differential LNAs. The RF is then downconverted by quadrature mixers and then fed to the

baseband programmable-gain amplifiers and active filters for channel selection. The Receiver

output pins can be directly connected to the baseband analog processor. The Receive path

features automatic calibration and tracking to remove DC offsets.

The transmitter features a translation-loop architecture for directly modulating baseband signals

onto the integrated TX VCO. The translation-loop modulator and TX VCO are extremely low noise

removing the need for external SAW filters prior to the PA.

The AD6548/9 uses a single integrated LO VCO for both the receive and the transmit circuits.

The synthesizer lock times are optimized for GPRS applications up to and including class 12.

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To dramatically reduce the BOM both TX Translational loop and main PLL Loop Filters are fully

integrated into the device.

AD6548 incorporates a complete reference crystal calibration system. This allows the external

VCTCXO to be replaced with a low cost crystal. No other external components are required. The

AD6549 uses the traditional VCTCXO reference source.

The AD6548/9 also contains on-chip low dropout voltage regulators (LDOs) to deliver regulated

supply voltages to the functions on chip, with a battery input voltage of between 2.9V and 5.5V.

Comprehensive power down options are included to minimize power consumption in normal use.

A standard 3 wire serial interface is used to program the IC. The interface features low-voltage

digital interface buffers compatible with logic levels from 1.6V to 3.0V.

The AD6548/9 is packaged in a 5mm × 5mm , 32-lead LFCSP package.

ORDERING GUIDE

AD6548BCPZ

Model TemperatureRange Package

-20°C to +85°C

LFCSP-32

AD6549BCPZ -20°C to +85°C LFCSP-32

3.3.2 Features

Fully Integrated GSM Transceiver including

Direct Conversion Receiver

4 Differential LNAs

Integrated Active RX Channel Select Filters

Programmable Gain Baseband Amplifiers

Translation Loop Direct VCO Modulator

Integrated TX VCO and tank

External TX filters eliminated

Integrated Loop filter components

High performance multi band PLL system

Fast Fractional-N Synthesizer

Integrated Local Oscillator VCO

Fully Integrated Loop filters

Crystal Reference Oscillator & Tuning System (AD6548)

Power Management

Integrated LDOs allow direct battery supply connection

Small footprint

32-Lead 5 X 5 mm Chipscale Package

APPLICATIONS

Dual, Triple and Quad Band Radios

- GSM850, E-GSM 900, DCS1800 and PCS1900

- GPRS to Class 12- EDGE RX

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3.3.3 Pin Descriptions

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