LG KF301 Service Manual

LG Electronics

KF301

Service Manual

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……………….18

3.1 Digital Main Processor(

3.2 Power Amplifier Module(

3.3 Transceiver Module(

3.4 Bluetooth Module (

3.5 Memory Module (

3.6 FM Radio Module (Si4708)…………..38

3.7 LCD Interface……………………….…40

3.8 SIM& Micro SD Card Interface…...….43

3.9 KEYPAD Interface…………………….44

3.10 Battery Charging Block Interface…..45

K5D1H12ACC-A075)

MT6235

SKY77547

AD6548

)…………...28

MT6601

)………….….31

)………..18

)…….27

...…..34

4.15 Camera Trouble………………………82

4.16 USB Trouble…………………………..84

4.17 FM Radio Trouble…………………….86

4.18 Bluetooth Trouble…………………….88

4.19 RF Trouble…………………………….90

5. DOWNLOAD………………...……..95

5.1 Download setup………………………..95

5.2 Download Process…………………….96

6. BLOCK DIAGRAM……………….104

7. CIRCUIT DIAGRMA……………...105

8. BGA IC PIN Check………………107

9. PCB LAYOUT…………………….120

10.ENGINEERING MODE…………122

3.11 Audio Interface……………….….…...46

3.12 Vibrator Interface….…………………48

3.13 Camera Interface…………………….49

4. TROUBLE SHOOTING…………...50

4.1 Power On Trouble……………………..50

4.2 SIM Card Trouble……………………...52

4.3 Vibrator Trouble………………………..54

4.4 Keypad Trouble………………………..56

4.5 RTC Trouble…………………………...58

4.6 Keypad Backlight Trouble…………….61

4.7 LCM Backlight Trouble………………. 63

4.8 LCM Trouble…………………………...65

4.9 Microphone Trouble…………………...67

4.10 Receiver Trouble……………………..69

4.11 Speaker Trouble………………………71

4.12 Headphone Trouble………………….73

4.13

Charging Trouble……………………..77

11. CALIBRATION………………….131

11.1 Test Equipment Setup……………..131

11.2 Calibration Steps…………………...132

12. STAND ALONE TEST…………172

12.1 Test Configuration………………….172

12.2 META tool Install process…………173

12.3 Rx Test………………………………174

12.4 Tx Test……………………………....180

13. EXPLODED VIEW&
REPLACEMENT PART LIST……..182

13.1 Exploded View……………………..182

13.2 Replacement Part list.………….....184

4.14 SD card Trouble………………………80

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

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system and may void any remaining warranty.

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.

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2. PERFORMANCE

2.1 H/W Features

Solution MT6235 Media Tek

Type clamshell

Antenna Type Internal (Trip-Band 900/1800/1900M)

Size Dimension (mm) 94.5*49*16.95 mm TBD

Main Display 2.0”, 176x220 (data bus: parallel)

Sub Display 1.04’’,96x64

GPRS Class 10

MMS Yes, 1.2

Camera 1.3M Pixels

Battery 900 mAh

Audio player Yes (MP3/AAC/AAC+)

FM Receiver Yes, US/Europe band (87.5~108MHz)

MPEG4/H.263 Yes (support 3GP)

H.264 No (no support)

AAC+ Yes

FM as alarm Yes

Scheduled FM recording Yes

MP4 for incoming call/ power on off

Yes

animation and screen saver

Loud Speaker Yes

Audio player--real resuming Yes, for MP3 only

Video recording Yes

Memory Size 1G(NAND)+512Mb(SDRAM)

User memory 64MB

Memory Card O external slot(Micro SD)

Bluetooth Yes, version 2.0

USB Yes, 2.0 (FS)

WAP Yes, 2.0

Java Yes

EMAIL Yes

DRM Yes, V1.0

MPEG4 caller ID Yes

OTA Yes

Music Equalizer Yes

Image Editing Yes

In flight mode Yes

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2.2 S/W Features

2-2-1 General Features

Basic Display

RSSI (7 Level, 0~6) Y

Battery Indicator (4 Level, 0~3) Y

Sound LeveL (8,0-7) Y

Icons Indicator

PLMN/Service Indicator Y

Clock / Calendar Display Small Clock / Big Clock / Dual Clock Y

Wallpaper JPG or GIF Y

Screen Saver JPG or GIF

Power On Animation GIF Y

Power Off Animation GIF Y

Own Number Display Y

Greeting Text Display Y

Profile notification popup Y

Hello UI Y

Idle toolbar Y

Follow : “Low Tier UI

Y

2008_Indicator_v1.0_20090430.xls”

N

Speech

Codec

Keypad

User Profile

(Follow Low

Tier UI V1.0)

AMR-NB Y

AMR-WB Y

EFR Y

FR Y

HR Y

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

4 function keys

4 way navigation keys

2 soft keys

2 side keys

Clear Key N

Center Key Y

International Access (+)(long 0) Y

User Selectable and Customizable Profiles 7 profiles

Y, JD

Y

Follow: “Low Tier UI

2008_Profiles_v1.0_20090717.”

Organizer &

Tools

(Follow Low

Tier UI V1.0)

Calendar Y

To do list Y

Alarm Clock Y

Note ( Memo ) Y

Calculator Y

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Auto update date & time

Auto language

Stopwatch Y

Date finder Y

Converter Y

World time Y

Phone

Personalizatio

n Setting

(Follow Low

Tier UI V1.0)

Date & time Date & time setting

Y

Daylight saving

Auto key lock No key lock for folder type. N

Language

Y

Power save Y

Data backup/import N

Phone info Y

Screen theme Home screen

Y

-Do not show

-Calendar + Clock

-Calendar

-Clock

-Clock + key guide

-Dual clock

-key guide

-Tool bar

-Hello UI

Start-up

Shut-down

Menu style Grid & List style for Main Menu Y

Dialing Y

Font Small, medium, large(only for

Y, JD

english font)

Backlight LCD backlight

Y

Keypad backlight

Handset theme 3 themes.

Y, JD

Do not support download theme

Greeting message Y

Memory manager Y

Primary storage setting Y

Reset setting Y

Phone lock Y Security

Application lock Y

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Scratch Pad Memory(Save an input number

SIM lock Follow LGE SIM lock rule.

Y

(AT command lock, hard lock ,

factory lock)

Input Method

ATMT

Lock if SIM changed

PIN/PIN2

Engine T9 Y

Support Language Depends on customer and market

requirement.

Total supported languages will be

limited to memory condition.

Predictive word input

Game Number of games included 2 default Java Games.

None native game.

Log

(Call History)

(Follow Low

Tier UI V1.0)

Last Dialed Number Max: 50 Y

Last Received Number Max: 50 Y

Last Missed Number Max: 50 Y

Y

in call) : 1

Y

Y

Y

Y

Y

Y

Call Cost

Call

Management

SS

Last Call Time Y

Total Dialed Call Time Y

Total Received Call Time Y

Last Call Cost Y

Total Cost Y

Max Cost Y

Price Per Unit Y

Call waiting Y

Call Swap Y

Call Retrieve Y

Automatic Redial Y

Speed Dialing Y

Last Number Redial Y

Multi party Call (Conference Call) Y

Explicit Call Transfer Y

Call Hold Y

(Supplementa

ry Services)

Call Waiting Y

Calling Line Identity Presentation Y

Calling Line Identity Restriction Y

Connected Identification Restriction Y

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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

(Follow Low

Tier UI V1.0)

Call Barring All Outgoing International Calls

Y

Call Barring All outgoing International

except home

Call Barring All incoming Calls Y

Call Barring All incoming Calls when

Y

roaming

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

Y

conference, 1 on held, 1 waiting)

Line switching (Line1, Line2)

Y

Call reminder (Off, Single, Periodic)

Closed User Group

Name Search contacts Y Contacts

New contact

MAX：1000

Y, JD

Fields:

1. First name

2. Last name

3. Mobile number

4. Home number

5. office number

6. Pager number

7. Fax number

8. General number

9. Email

10. Group

11. Image

12. Ring Tone

13. Homepage URL

14. Home address

15. Company name

16. Job title

17. Company address

18. Memo

19. Birthday

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Contact list settings Location / show image on/off Y

Synchronise contact Y

Copy & Move Y

Backup / Restore / Clear contacts Y

Memory info Y

Groups MAX : 6 groups Y

Speed dails MAX : 9 Y

Message

Service dial number Emergency

Y

Customer service

Own numbers User can change the own numbers

Y

of handset. (Sets of own numbers

depends on SIM)

Business card vCard Version 2.1 Y

SMS/EMS 1. Reply Path

2. Delivery Report

3. Valid period (1 hour/12 hours/1

day/1 week/Maximum)

4. Message Type (Text, Fax, Page,

Email) Message Indication Type refer to

GSM 03.40

5. 1000 records in phone

6. EMS version 5.0

Common option 1. read message

Y

Y

2. write / edit message

3. Send / receive message

4. Reply / forward message

5. Extract number from message

6. Message status

7. Message unread indicator

8. Message center number

9. Voice mail center number

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MMS 1. Version : OMA MMS 1.2

2. Picture Attachable

3. Video attachable

4. Sound attachable

5. File attachable

6. XML parser for SMIL 2.0

7. DRM v1.0

8. Incoming MAX message size :

300 KB

9. Outgoing MAX message size :

300 KB

Y

Broadcast

Cell

Email Supported protocol :

POP3,IMAP4,SMTP

Instant Messaging(IM) N

Chat room Y

Bluetooth message Use file format to transfer via BT. Y

Bluetooth message chat N

Read Cell Broadcast Y

Cell Broadcast Mode: Receive On/Off Y

Cell Broadcast Message Language Y

Channel Setting Y

Y

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2-2-2 Networking Features

9600 bit/s),

Auto, Daylight, Tungsten,

Function Detail Item Specification Support

GPRS GPRS Multi slot Class 10 Y

EDGE N

Data Service BS 24 - 26 (2400-

asynchronous, non-transparent, UDI.

CSD rate up to 9.6K bit/s

GPRS Counter

Network

SIM

Last Sent (unit in Byte) Y

Last Received (unit in Byte) Y

All Sent (unit in Byte) Y

All Received (unit in Byte) Y

Automatic Network Selection Y

Manual Network Selection Y

Network Service Status Y

Preferred Network (User definition) Y

GPRS connection mode selection:

Always, When Needed

SIM Application Toolkit Release 98 Class 2 certified

Prepaid SIM operation Y

PIN / PIN2 Y

Y

Y

Y

Personalization (Service provider lock,

Network lock)

DTMF Signaling Y DTMF

DTMF Enable & Disable Y

2-2-3 Multimedia Features

Function Detail Item Specification Support

Camera / Camera Video

Y

Capture Size 176x220, 320x240,

640X480, 1280x1024

Preview Size Full Screen: 176x220 Y

Quality Low, Normal, High Y

EV +4, +3, +2, +1, 0, -1, -2, -3,

-4

WB

Y

Y

Y

FLUORESCENT, Cloud,

INCANDESCENCE

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Function Detail Item Specification Support

Gallery

Zoom 1280x1024 : 1x

Y

640X480 : 1x, 2x

176x220, 320X240 : 1x, 2x,

4x

Effect Normal, Sepia, Grayscale,

Y

Color invert

Continuous Shot 1 Shot, 3 shot, 6 shot Y

Self Timer 3 seconds, 5 seconds, 10

Y

seconds

Shutter tone Off, tone1, tone2, tone3,

Y

tone 4

Storage Phone/SD card Y

Reset Setting Restore to default setting Y

Video Recording QCIF @ 30 fps Y

Video Playing QCIF @ 15 fps Y

Image viewer 1. view

Y

(Follow Low Tier UI V1.0)

2. Use as

3. edit

4. Print via

5. Slide show

6. Supported format:

JPG,GIF,BMP.

Video player 1. play / view

2. Use as

3. Capture

4. Supported format : MP4

Music file 1. play

2. use as

3. Supported format :

MP3 , MIDI , WAV ,

AAC, AAC+

Y

Y, JD

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Function Detail Item Specification Support

20 level (0 ~

AMR

Music Player

(follow Low Tier UI V1.0)

Common option 1. Add new folder

Y

2. Rename

3. Delete

4. Delete all

5. Sort by

6. Send via

7. Move

8. Copy

9. Lock / Unlock

10. Search

11. Mark / Unmark

12. File info / folder info /

memory info

External memory SD Card, support up to 4GB Y

Player 1. play/pause/resume/stop

Y

2. Next/Previous

3. Repeat Mode

Voice Recorder

(Follow Low Tier UI V1.0)

4. Shuffle Play

5. Volume control :

20, 0 for Mute)

All songs list Y

Artists / Albums / Genres list Y

Track list Y

Playlists Y

Background Play (BGM) Y

Supported format MP3, MIDI, WAV, AAC, AAC+ Y, JD

Storage Selection:

Y, JD

Phone, Memory card

(Only available when

external memory card

supported)

Encode Format

, AMR-WB Y

Record Y

Melody Compose

Pause Y

Resume Recording Y

Stop Y

Edit N

Play N

Save

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N

Function Detail Item Specification Support

in one melody file, so the last

FM Radio

(Follow Low Tier UI V1.0)

Instrument Selection: 10

types

Piano, Guitar, Violin,

Saxophone, Steel Drums,

Flute, Harmonica, Trumpet,

Music Box, Xylophone

Play Speed:

Fast, Normal, Slow

[Notice] Melody composer

only support one instrument

chosen instrument will be

used to play this melody file

Skin 2 Skins Y

Channel List 1. MAX : 50 list

N

N

N

Y

2. Option : Replace / Organise

(Follow Low Tier UI V1.0)

JAVA

Auto Scan Preset Channel List generated

by auto search.

Background Play (BGM) Y

Record 1. Format : AMR / AMR-WB.

2. Limit : Base on user memory.

3. Scheduled recording

AF On/Off support Need RDS support : base HW

Chip

DRM 1.0 1. Forward Lock

2. Separate Delivery

3. Combined Delivery

DRM 2.0 4. N

JTWI 5. MIDP 2.0: JSR-118

6. WMA 1.1: JSR-120

7. MMAPI 1.1: JSR-135

8. CLDC 1.1: JSR-139

Y

Y

N

Y DRM

Y

JSR-75 File & PIM Y

Java Nokia UI support N

JSR-184 N

JSR-205 N

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2-2-4 Connectivity Features

below

* Send a string of DTMF tones

* Add an entry to the telephone

Function Detail Item Specification Support

WAP

WAP 2.0 Spec. Obigo version: Q05A Y

WAP Push OTA/Message Y

WAP Provisioning Service Y

CSD/GPRS data connection Y

Bookmark Y

Wireless Telephony Application

(WTA) support:

Only Public WTA support,

supported functions listing

-

* Make a telephone call

over an established voice

connection

book of the device

Y

Sync ML

Bluetooth

Supports WML, WCSS, XHTML

mp

Contacts sync Y

Calendar sync Y

Email sync N

Device sync N

PC sync N

Bluetooth 2.0 with EDR N

Bluetooth 2.0 without EDR Y

Supported profile 1. GAP

Y

Y

2. SDAP

3. DUN

4. SPP

5. HSP

6. HFP

7. OPP

8. FTP

9. A2DP

10. AVRCP

11. BPP

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Function Detail Item Specification Support

MTP

Mass storage Y

Music sync N

Data service Y

FOTA N

PC Sync tool

Contacts sync PC tools same as other

Y

project

Message sync Y

Scheduler Sync N

USB

Mass Storage Device Y

Com port Y

PICTBRIDGE Y

Web CAM N

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3. TECHNICAL BRIEF

3.1 Digital Main Processor

Figure.3-1-1 MT6235 FUNCTIONAL BLOCK DIAGRAM

-18-

3.1.1 System Overview

MT6235 is a highly-integrated and extremely powerful single-chip solution for

GSM/GPRS/EDGE mobile phones.

Based on the 32-bit ARM926EJ-STM RISC processor, MT6235’s superb processing power,

along with high bandwidth architecture and dedicated hardware support, provides an

unprecedented platform for high performance GPRS/EDGE Class 12 MODEM application.

Overall, MT6235 presents a revolutionary platform for mobile

devices.

.

Platform

MT6235 is capable of running the ARM926EJ-STM RISC processor at up to 208 MHz, thus

providing fast data processing capabilities. In addition to the high clock frequency, separate

CODE and DATA caches are also included to further improve the overall system efficiency.

For large amounts 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 high performance platform for mobile applications, hardware flash content

protection is also provided to prevent unauthorized porting of the software load to protect the

manufacturer’s development investment.

Memory

To provide the greatest capacity for expansion and maximum bandwidth for data intensive

applications such as multimedia features, MT6235 supports up to 4 external state-of-the-art

devices through its 8/16-bit host interface.High performance devices such as Mobile SDRAM and

Cellular RAM are supported for maximum bandwidth.Traditional devices such as burst/page

mode flash, page mode SRAM, and Pseudo SRAM are also supported. For greatest compatibility,

the memory interface can also be used to connect to legacy devices such as Color/Parallel LCD,

and multi-media companion chips are all supported through this interface. To minimize power

consumption and ensure low noise, this interface is designed for flexible

I/O voltage and allows lowering of the supply voltage down to 1.8V. The driving strength is

configurable for signal integrity adjustment.

Multi-media

The MT6235 multi-media subsystem provides a connection to a CMOS image sensor and

supports a resolution up to 2.0 Mpixels. With its high performance application platform, MT6235

allows efficient processing of image and video data.

In addition to image and video features, MT6235 utilizes high resolution DAC, digital audio, and

audio synthesis technology to provide superior audio features for all future multi-media needs.

Connectivity and Storage

To take advantage of its incredible multimedia strengths, MT6235 incorporates myriads of

advanced connectivity and storage options for data storage and communication. MT6235

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supports UART, Fast IrDA, USB 2.0, SDIO,Bluetooth, Touch Screen Controller, WIFI Interface,

and MMC/SD/MS/MS Pro storage systems. These interfaces provide MT6235 users with the

highest degree of flexibility in implementing solutions suitable for the targeted application.

To achieve a complete user interface, MT6235 also brings together all the necessary

peripheral blocks for a multi-media GSM/GPRS/EDGE phone. The peripheral blocks include the

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.

Furthermore, to provide much better configurability and bandwidth for multi-media products, an

additional 18-bit parallel interface is incorporated. This interface enables connection to LCD

panels as well as NAND flash devices for additional multi-media data storage.

Audio

Using a highly integrated mixed-signal Audio Front-End, the MT6235 architecture 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, MT6235 also provides Stereo Input and Analog MUX.

MT6235 supports AMR codec to adaptively optimize speech and audio quality. Moreover,

HE-AAC codec is implemented to deliver CD-quality audio at low bit rates.

On the whole, MT6235’s audio features provide a rich solution for multi-media applications.

Radio

MT6235 integrates a mixed-signal baseband front-end in order to provide a well-organized

radio interface with flexibility for efficient customization. The front-end contains gain and offset

calibration mechanisms, and filters with programmable coefficients for comprehensive

compatibility control on RF modules. This approach allows the usage of a high resolution D/A

Converter for controlling VCXO or crystal, reducing the need for an expensive TCVCXO. MT6235

achieves great MODEM performance by utilizing a 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 the software program with the

ARM926EJ-S core. With this standardized debugging interface, MT6235 provides

developers with a wide set of options in choosing ARM development kits from different third party

vendors.

Power Management

The MT6235 offers various low-power features to help reduce system power consumption.

These features include a Pause Mode of 32 KHz clocking in Standby State, Power Down Mode

for individual peripherals, and Processor Sleep Mode. MT6235 is also fabricated in an advanced

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

Package

The MT6235 device is offered in a 13mm×13mm, 362-ball,

0.5 mm pitch, TFBGA package.

3.1.2 Platform Features

General

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

TFBGA 13mm×13mm, 362-ball, 0.5 mm pitch package

MCU Subsystem

ARM926EJ-S 32-bit RISC processor

High performance multi-layer AMBA bus

Java hardware acceleration for fast Java-based games and applets

Operating frequency: 26/52/104/208 MHz

Dedicated DMA bus

14 DMA channels

512K bits on-chip SRAM

384K bits Instruction-TCM

640K bits Data-TCM

128K bits Instruction-Cache

128K bits Data-Cache

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

PPP Framer coprocessor

External Memory Interface

Supports up to 4 external memory devices

Supports 8-bit or 16-bit memory components with maximum size of up to 128M Bytes each

Supports Mobile SDRAM and Cellular RAM

Supports Flash and SRAM/PSRAM with page mode or burst mode

Industry standard Parallel 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

8-row × 8-column keypad controller with hardware scanner

Supports multiple key presses for gaming

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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)

4 sets of Pulse Width Modulation (PWM) output

Alerter output with Enhanced PWM or PDM

8 external interrupt lines

Security

Supports security key and 126 bit chip unique ID

Connectivity

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

IrDA modulator/demodulator with hardware framer. Supports SIR/MIR/FIR operating speeds.

USB 2.0 capability

Multi Media Card, Secure Digital Memory Card, Memory Stick, Memory Stick Pro host

controller with flexible I/O voltage power

Supports SDIO interface for SDIO peripherals as well as WIFI connectivity

DAI/PCM and I2S interface for Audio application

Power Management

Power Down Mode for analog and digital circuits

Processor Sleep Mode

Pause Mode of 32 KHz clocking in Standby State

4-channel Auxiliary 10-bit A/D Converter for charger and battery monitoring and photo sensing

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

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

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Voice and Modem CODEC

Dial tone generation

Voice memo

Noise reduction

Echo suppression

Advanced sidetone Oscillation Reduction

Digital sidetone generator with programmable gain

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/EDGE modem

Packet Switched Data with CS1/CS2/CS3/CS4 coding schemes

GSM Circuit Switch Data

GPRS/EDGE Class 12

Voice Interface and Voice Front End

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

gain control (AGC) mechanisms

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/NAND Flash Interface

Dedicated Parallel Interface supports 3 external devices with 8-/16-bit NAND flash interface,

8-/9-/16-/18-bit Parallel interface, and Serial interface for LCM

Built-in NAND Flash Controller with 1-bit ECC for mass storage

LCD Controller

Supports simultaneous connection to up to 3 parallel LCD and 2 serial LCD modules

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

Supports LCD module with maximum resolution up to 800x600 at 24bpp

Per pixel alpha channel

True color engine

Supports hardware display rotation

Capable of combining display memories with up to 6 blending layers

Image Signal Processor

8 bit YUV format image input

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Capable of processing image of size up to 2.0 M pixels

IEEE Std 1180-1990 IDCT standards compliance

Supports progressive image processing to minimize storage space requirement

Supports reload-able DMA for VLD stream

Image Data Processing

Supports Digital Zoom

Supports RGB888/565, YUV444 image processing

High throughput hardware scaler. Capable of tailoring an image to an arbitrary size.

Horizontal scaling in averaging method

Vertical scaling in bilinear method

YUV and RGB color space conversion

Boundary padding

2D Accelerator

Supports 32-bpp ARGB8888, 24-bpp RGB888, 16-bpp RGB565, and 8-bpp index color modes

Supports SVG Tiny

Rectangle gradient fill

BitBlt: multi-BitBlt with 7 rotation, 16 binary ROP

Alpha blending with 7 rotation

Line drawing: normal line, dotted line, anti-aliasing

Circle drawing

Bezier curve drawing

Triangle flat fill

Font caching: normal font, italic font

Command queue with max depth of 2047

Audio CODEC

Supports HE-AAC codec decode

Supports AAC codec decode

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

Stereo analog input for stereo audio source

Analog multiplexer for stereo audio

Stereo to mono conversion

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3.1.5 General Description

Figure 3-1-2 depicts the block diagram of MT6235. Based on a dual-processor architecture,

MT6235 integrates both an ARM926EJ-S core and a digital signal processor core. ARM926EJ-S

is the main processor responsible for running high-level GSM/GPRS protocol software as well as

multi-media applications. The digital signal processor manages the

low-level MODEM as well as advanced audio functions. Except for a few mixed-signal circuitries,

the other building blocks in MT6235 are connected to either the microcontroller or the digital

signal processor.

MT6235consists of the following subsystems:

Microcontroller Unit (MCU) Subsystem: includes an ARM926EJ-S RISC processor and its

accompanying memory management and interrupt handling logics;

Digital Signal Processor (DSP) Subsystem: includes a DSP and its accompanying memory,

memory controller, and interrupt controller;

MCU/DSP Interface: the junction at which the MCU and the DSP 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 the

Microcontroller;

DSP Peripherals: hardware accelerators for GSM/GPRS/EDGE channel codec;

Multi-media Subsystem: integrates several advanced accelerators to support multi-media

applications;

Voice Front End: the data path for converting analog speech to and from digital speech;

Audio Front End: the data path for converting stereo audio from an audio source;

Baseband Front End: the data path for converting a digital signal to and from an analog signal

from the RF modules;

Timing Generator: generates the control signals related to the TDMA frame timing; and,

Power, Reset and Clock Subsystem: manages the power, reset, and clock distribution inside

MT6235.

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Figure.3-1-2 MT6235 BLOCK DIAGRAM

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3.2 Power Amplifier Module (SKY77547)

Figure.3-2-1 SKY77547 FUNCTIONAL BLOCK DIAGRAM

The SKY77547 is a transmit and receive front-end module (FEM) with Integrated Power

Amplifier Control (iPAC.) for quad-band cellular handsets comprising GSM850/900 and

DCS1800/PCS1900 operation. Designed in a low profile, compact form factor, the SKY77547

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 GSM850/900 PA block and a DCS1800/PCS1900 PA block,

impedancematching circuitry for 50 Ω input and output impedances, Tx harmonics filtering, high

linearity and a low insertion loss PHEMT RF switch, 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 GSM850/900 bands and the other PA block supports the DCS1800/PCS1900

bands. Both PA blocks share common power supply pads to distribute current. The output of

each PA block and the outputs to the four receive pads are connected to the antenna pad through

a PHEMT RF switch. 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 are performed using four external control

pads. Refer to the block diagram in Figure 1 below. The band select pads, BS1 and BS2, select

GSM850, GSM900, DCS, and PCS modes of operation. Transmit enable Tx_EN controls receive

or transmit mode of the 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 Tx–VCO

while the VCO is being tuned prior to the transmit burst.

The SKY77547 is compatible with logic levels from 1.2 V to VCC for BS1, BS2, 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.

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

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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 Model Temperature

Range

AD6548BCPZ -20°C to +85°C LFCSP-32

AD6549BCPZ -20°C to +85°C LFCSP-32

Package

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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