LG X350 Service Manual

APCPCWM_4828539:WP_0000001WP_0000001

LG-X350

Service Manual

LG Electronics

APCPCWM_4828539:WP_0000001WP_0000001

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………………20

3.1 Digital Main Processor(MT6236)……….20

3.2 Power Amplifier Module(SKY77547)…....31

3.3 Transceiver Module(AD6548)…………..33

3.4 Memory Module (K521H12ACB-B060)…….36

3.5 FM Radio Module (AR1200)…………....40

3.6 TV Module(NMI326)……………...…..43

3.7 LCD Interface………………………....45

3.8 SIM & Micro SD Card Interface……...48

3.9 KEYPAD Interface ……………….…...49

3.10 Battery Charging Block Interface…..50

4.13 FM Radio Trouble……………..85

4.14 RX & PAM Trouble……….…...87

4.15 Bluetooth Trouble……………..96

4.16 Camera Trouble……………….98

4.17 ISDB-T(NMI326) Trouble……101

5. DOWNLOAD………………...104

5.1 Download setup………………..104

5.2 Download Process…………….105

6. BLOCK DIAGRAM………….113

7. CIRCUIT DIAGRMA………...114

8. BGA IC PIN Check…………125

9. PCB LAYOUT………………..128

10. ENGINEERING MODE……130

3.11 Audio Interface……………….….…..51

3.12 Vibrator Interface….………………...53

3.13 Camera Interface…………….……...54

3.14 Key LED Interface…………………...56

4. TROUBLE SHOOTING…………..57

4.1 Power On Trouble…………………….57

4.2 SIM Card Trouble……………………..62

4.3 Vibrator Trouble……………………….64

4.4 Keypad Trouble……………………….66

4.5 Key Backlight Trouble………….…….69

4.6 LCM Backlight Trouble…………….…70

4.7 LCM Trouble……………….……….…72

4.8 Microphone Trouble…………………..74

4.9 Receiver Trouble……………………...76

4.10 Speaker Trouble……………………..78

4.11 Headphone Trouble…………...........80

4.12 Charging Trouble……………...........83

11. CALIBRATION……………..143

11.1 Test Equipment Setup……….143

11.2 Calibration Steps……………..144

12. STAND ALONE TEST…….183

12.1 Test Configuration……………183

12.2 META tool Install process…...184

12.3 Rx Test………………………...187

12.4 Tx Test…………………………193

13. #EV#…….…………………..199

Rear Cover Disassemble

14. SOP………………………………201

APCPCWM_4828539:WP_0000001WP_0000001

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.

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

of the 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 MT6236A/B-L A/D Media Tek

Type Bar type

Antenna Type Internal (Quad-Band) 850/900/1800/1900

Main Display 2.3” 320x240 QVGA Tianma

GPRS Class 10 EDGE Rx

ISDB-T NM326AAA NMI

MMS Yes, 1.2

Camera 2.0M FF Hansung (Toshiba 1/5”)

Battery 1500mAh Li-ion inner pack LGC BL-44JN

Audio player Yes MP3/AAC/WAV

FM Receiver Yes

(87.5~108MHz)

MPEG4/H.263 Yes (support 3GP)

H.264 Yes

AAC Yes

AAC+ Yes

FM alarm Yes

Scheduled FM recording Yes

MP4 for incoming call/ power on

Yes

off animation and screen saver

Loud Speaker Yes

Audio player--real resuming Yes

Video recording Yes

Memory Size 1Gb + 512Mb NAND Boot. Samsung 1.8V

Internal NAND Yes

(Maximum is 44M for user memory)

Memory Card Micro SD Up to 16GB

Bluetooth Yes, version 2.1 3.0 W/ EDR.

USB Yes, USB 2.0 full speed

WAP Yes, 2.0 Opera Mobile

Java Yes

EMAIL Yes

DRM Yes DRM 1.0 FL Only

MPEG4 caller ID Yes

OTA Yes

Music Equalizer Yes

In flight mode Yes

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2.2 S/W Features

2.1.1 System Specification

Item Target Specification

Form Factor Bar Type

Size 111 x 61 x 13.5 mm

Weight 115g with battery

85g without battery

Battery 3.7V, 1500mAh Li-Ion

Talk Time (TBC) Up to 8 hrs@1500mAh (PCL:10)

Standby Time (TBC) Up to 800 hrs @ 1500mAh (SIM1 P.P.: 9)

Antenna Embedded type

LCD 2.3” 320x240 QVGA

FM Yes,

Camera 2.0M pixel FF

Auto mode by default setting

Back Light White LED

Keypad Backlight Color White

Vibrator Yes

Loud Speaker Yes, 18*12 , out put : 0.8W over

Microphone Yes

Earphone Jack Yes 3.5Φ

SIM Socket Yes, 1.8/3.0V

Volume Key Side key (up/down)

Basic Accessory

Travel Adaptor(700MA)

Standard Battery (1500mA, Li-Ion)

Stereo Headset with button (FM)

Micro USB Data Cable

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2.1.2 General Features

Function Target Specification

Basic Display

RSSI (7 Level, ‘no service, 0, 1, 2, 4, 5, 7’)

Battery Indicator (4 Level, 0~3)

Battery Indicator

Battery Indicator Voltage

3 -> 2 3.72 ± 0.03V

2 -> 1 3.62 ± 0.03 V

1 -> 0 3.55 ± 0.03 V

Antenna display (7 level settings and the corresponding RSSI)

Icons Indicator

Others reference to "Phone Personalization Setting"

Speech Codec FR/EFR/HR/AMR

Keypad

Number of Keys: 48 Key (include 37 QWERTY keys, 4 function keys, 5 way

navigation keys, 2 side keys)

Soft Function Keys : 2

International Access (+)

User Profile

(Audio

Settings)

User Selectable and Customizable Profiles (4 profiles: Normal, Outdoor, Silent,

Flight mode)

Key Tone

Key Tone Volume (7 Level - 0 ~ 6, 0 for Mute)

Key tone setting (DTMF, English)

Ring Tone

Ring Tone Volume (7 Level - 0 ~ 6, 0 for Mute)

Built-in Ring Tone Pattern: 20

Customizable Ring Tone Link: 1

Alert Type

5 Types - Ring, Vibration Only, Vibration and Ring, Ring after vibration, Silent

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Power on/off tones

Built-in Ring Tone Pattern: 3 (include Silent) Built-in Ring Tone Pattern: 4

Power Off Tone

Built-in Ring Tone Pattern: 3 (include Silent)

Message Tone

Built-in Ring Tone Pattern: 10

Warning Tone

Built-in Ring Tone Pattern: 1

Error Tone

Built-in Ring Tone Pattern: 1

Camp On Tone

Built-in Ring Tone Pattern: 1

Connect Tone

Built-in Ring Tone Pattern: 1

Status LED

Built-in Lighting Pattern: No (None, Pattern 1)

Charger-in Status LED

Built-in Lighting Pattern: No (None, Pattern 1)

Answer Mode

Any Key Answer, Send Key only

Auto (Only available for headset mode while headset plugged in) TBD

Information

Management

Tools and

Utilities

Calendar - Month view only Personal

Schedule - 6 fields (Date, time, Expired Date, Subject, Alarm, Repeat)

Alarm

5 sets of Alarm

4 major fields for each set - On/Off, Time, Repeat type, Audio option

World Clock

Cities list: TBD cities

Daylight saving time support: activated by user selection

Home city set

Calculator

Addition, Subtraction, Multiplication, Division

Unit Converter

Weight, Length

Memo

To do

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Phone

Personalizatio

n Setting

Security Phone Lock

Greeting Text

Shortcuts

Flight Mode

Time and Date Setting

Wallpaper

Screen Saver

Power On Animation

Power Off Animation

LCD Backlight

PLMN/Service Indicator (Display of PLMN Name/Service Provider Name from

SIM)

Date Time Display

Own Number Display

Restore Factory Default Setting

Key Lock

Input Method

Game Java Games, provided by LGE.

Anti-theft

Mobile Tracker

(ATMT)

Engine

T9 (except Chinese)

Support Language

Depends on customer and market requirement.

Total supported languages will be limited to memory condition.

Predictive word input

Provide this feature by following LG spec. (GSM_VVLT 0 5_LMT_20071117_1.ppt)

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2.1.3 GSM/GPRS Features

Function Target Specification

GPRS GPRS Multi slot Class 10

Data Service

Call History

(Dual SIM)

Call Cost

GPRS Counter

BS 24 - 26 (2400-9600 bit/s), asynchronous, non-transparent, UDI.

CSD rate up to 9.6K bit/s

Last Dialed Number: 80 (single SIM:40)

Last Received Number: 80 (single SIM:40)

Last Missed Number: 80 (single SIM:40)

Scratch Pad Memory (Save an input number in call): 1

Last Call Time

Total Dialed Call Time

Total Received Call Time

Last Call Cost

Tot al C os t

Max Cost

Price Per Unit

Last Sent (unit in Byte)

Last Received (unit in Byte)

All Sent (unit in Byte)

All Received (unit in Byte)

Call Management

Call Related Supplementary

Services

Call Swap

Call Retrieve

Automatic Redial

Speed Dialing

Last Number Redial

Support 40-digits Dialing Number from Idle, Phonebook in handset, and Call

Log

1. Idle dial screen: OK

2. Phonebook (Phone): OK

3. Phonebook (SIM): Have limitation, depend on SIM card.

4. Call Log: OK

5. SMS: support 20-digit

6. MMS: support 40-digit

Call Hold

Call Waiting

Calling Line Identity Presentation

Calling Line Identity Restriction

Connected Identification Restriction

Call Divert All voice Calls

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Phone Book

Call Divert if unreachable

Call Divert if no answer

Call Divert if busy

Call Divert all data calls

Cancel all divert

Call Barring All Outgoing Calls

Call Barring All Outgoing International Calls

Call Barring All outgoing International except home

Call Barring All incoming Calls

Call Barring All incoming Calls when roaming

Multi-party Call (up to 7 calls, 5 in conference, 1 on held, 1 waiting)

Miniute minder (On, Off)

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

Access Phone Book in call

Copy & Move

Fixed Dial Number

Service Dial Number

Speed Dial Number

SOS Number

Phone Entry: 1000 names

12 fields – Name, Number, Mobile, Home, Office number, Fax number, Email

Address, Company Name, Associate Picture, Associate Video, Associate

Message

Sound, Birthday

Caller Group-5 caller group- Friends, Family, VIP, Colleagues, School

Own Numbers: User can change the own numbers of handset. (Sets of own

numbers depends on SIM)

vCard:

Note: This phone doesn’t support phone number search.

SMS

Standard SMS

SMS Reply Path

SMS Delivery Report

Valid period (1 hour/12 hours/1 day/1 week/Maximum)

Message Type (Text, Fax, Page, Email) Message Indication Type refer to

GSM 03.40

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Basic text-only SMS as described in 3GPP TS 23.040 R5

Notice: This phone doesn’t support video ring tone via SMS

SMS Character Sets Support

GSM7

UCS-2

Support EMS receiving

EMS Standard as described in 3GPP TS 23.040 R5 excluding WVG

EMS Text Format

Text Style: Normal, Bold, Italic, Underlined, Strikethrough

Text Alignment: Left, Right, Center

Text Size: Normal, Large, Small

EMS Image Support

1-bit small image 16x16 pixels black and white

1-bit large image 32x32 pixels black and white

1-bit variable image in single SMS packet

Extended black and white 1-bit image up to 255x255 pixels

Extended 6-bit image up to 255x255

Pre-defined animation

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

User-defined i-Melody up to 128 bytes

LZSS compression algorithm

Re-use extended object

Object Distribution

User Prompt Indicator

Hyperlink format element

Extended Object Distribution

Notice: This mobile doesn’t support Nokia smart message format (including

WBMP), only support *.ems format"  subject to Nokia smart message license

EMS Character Sets Support

GSM7

UCS-2

EMS Miscellaneous

SMS Concatenation ( 8 Segments for MT/MO)

SMS Compression

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MMS

MMS Standard as described in 3GPP TS 23.140 V4.8.0

Extract media from Message

Insert Media into message

OTA provisioning partially support (Network Profile setting

Auto download mode

Manual download mode

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)

- maximal size for each MMS is limited by300KB

MMS Character Sets Support

US-ASCII

Unicode

ISO-8859-1

UTF-16

UTF-8

MMS Images Support

WBMP Wireless bitmap

GIF87

GIF89a

JPEG

MMS Sound Formats Support

WAV

AMR

MIDI

MP3

i-Melody

MMS Miscellaneous

Multipart binary MIME

Storage

Separated Inbox folder for SMS and MMS

Separated Outbox folder for SMS and MMS

Common Operation

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Cell Broadcast

Write Message

Read Message

Edit Message

(For MMS, Edit only conformance messages, unknown media not supported,

unknown SMIL not supported)

Reply Message

Send Message

Delete Message

Forward Message

Use Sender's Number

Message Templates

Extract media from Message (MMS/EMS)

Store Media (MMS/EMS)

Delete Media (MMS/EMS)

Read Cell Broadcast

Cell Broadcast Mode: Receive On/Off

Network

SIM

Cell Broadcast Message Language

Channel Setting

Automatic Network Selection

Manual Network Selection

Network Service Status

Preferred Network (User definition)

GPRS connection mode selection: Always, When Needed

Common Operation

SIM Application Toolkit (Release 98 Class 2 certified)

Prepaid SIM operation,

Security

Personalization (Service provider lock, Network lock)

DTMF Signaling DTMF

DTMF Enable & Disable

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2.1.4 Multimedia Features

Function Target Specification

Camera

Image size:

320X240, 640X480, 1280x960, 1600x1200. Zoom: 1x ~ 4x, (320x240:4x, 640x480:2x, 1280x960:1x, 1600x1200:1x)

Image Quality:

Super fine, Fine, Normal

White Balance:

Auto, Daylight, Tungsten, Fluorescent, Cloud, Incandescence

Shot: Three Shot Sounds

EV: -4 ~+4

Screen Mode:

Auto, Night

Banding: 60Hz/50Hz

Effect settings: (Total 14 6 types)

Normal, Grayscale, Sepia,

Color Invert, Blackboard, Embossment,

Storage Selection:

Image Viewer

Phone, Memory card

(Only available when external memory card supported)

Delay timer:

Off/ 3/ 5/ 10 Sec

Thumbnail supported

Browse Style:

List, Matrix

View

Use as: To Wallpaper, Caller ID,

Send via: MMS, Bluetooth, Email

Rename

Delete

Delete All

Sort:

By Name, Type, Time, Size, None

Storage Selection:

Get list from Phone, Memory card

(Only available when external memory card supported)

Image Format Support

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JPEG Baseline

GIF87a

GIF89a

WBMP

BMP

Music Player

Play

Pause

Resume

Stop

Fast forward

Rewind

Storage Selection:

Get list from Phone, Memory card

(Only available when external memory card supported)

Auto-Generate Playlist

Skin: 1 skins

Repeat Mode:

Off, One Song, All Songs ,All off

Shuffle Play

Background Play

Video Player

Equalizer Setting: 8 sets

Normal, Bass, Dance, Classical, Treble, Party, Pop, Rock

Volume Control:

21 level (0~20, 0 for Mute)

Playlist Edit:

Add, Remove, Remove All

Sound Format Support

MP3

AMR

MIDI

WAV

AAC

Play

Pause

Stop

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Fast forward

Rewind

Forward:

To MMS, Bluetooth

Rename

Delete

Delete All

Sort:

By Name, Type, Date

Storage Selection:

Get list from Phone, Memory card

Volume Control:

21 level (0~20, 0 for Mute)

White Balance:

Auto, Daylight, Tungsten, Fluorescent, Cloud, Incandescence

Video Recorder

EV: -4 ~+4

Night Mode:

On/Off

Banding: 60Hz/50Hz

Video Quality:

Good

Super fine, Fine, Normal

Record Audio:

On/Off

Encode Format:

MPEG4, H.263

Effect settings: (Total 14 6 types)

Normal, Grayscale, Sepia,

Color Invert, Blackboard, Embossment

Storage Selection:

Phone, Memory card

(Only available when external memory card supported)

Record

Pause

Resume Recording

Stop

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Sound Recorder

Melody Compose

Storage Selection:

Phone, Memory card

(Only available when external memory card supported)

Encode Format:

WAV, AMR, AWB

Record

Pause

Resume Recording

Stop

Edit

Play

Save

Instrument Selection: 10 types

Piano, Guitar, Violin, Saxophone, Steel Drums, Flute, Harmonica, Trumpet,

Music Box, Xylophone

Play Speed:

FM Radio

JAVA

Fast, Normal, Slow

[Notice] Melody composer only support one instrument in one imelody file, so

the last chosen instrument will be used to play this imelody file

Frequencies: 87.5 ~ 108.0

User definable Preset Channel List

Channel Auto Search

Background Play

Record

Record Format:

AMR, WAV, AWB

Record Storage:

Phone, Memory Card

(Only available when external memory card supported)

Preset Channel List generated by auto search

MIDP 2.0

CLDC 1.1

Memory Limit 2MB

Support JSR 139,118,120,135,185,75

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2.1.5 Connectivity Features

Function Target Specification

WAP

WAP 2.0 Spec.

WAP Push OTA/Message

WAP Provisioning Service

CSD/GPRS data connection

Bookmark

Wireless Telephony Application (WTA) 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

Support OTA push and push message

OTA Provisioning & OTA download

Supports WML, WCSS, XHTML mp

Version 3.0 (w/ EDR) Bluetooth

Profile: GAP,SDAP,DUN,SPP,HSP,HFP,OPP,FTP,A2DP, AVRCP

Mass Storage Device 2.0 USB

Virtual COM

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3. TECHNICAL BRIEF

3.1 Digital Main Processor

Figure.3-1-1 MT6236 FUNCTIONAL BLOCK DIAGRAM

3.1.1 System Overview

MT6236 is a monolithic chip that integrates leading edge power management unit,

analog baseband, and radio circuitry based on 65nm low power process.

MT6236 is a feature-rich and extremely powerful single-chip solution for high-end GSM/GPRS and EDGE capability.Based on the 32-bit ARM926EJ-STM RISC processor, MT6236‘s superb processing power, along with high bandwidth architecture and dedicated hardware support, provides a platform for high performance GPRS/EDGE Class 12 MODEM application and leading-edge multimedia applications.

Besides, MT6236 also features a highly integrated Bluetooth transceiver, which is fully compliance with Bluetooth specification v2.1+EDR.

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Platform

MT6236 is capable of running the ARM926EJ-STM RISC processor at up to 312 MHz, thus providing fast data processing capabilities. In addition to the high clock frequency, separate CODE and DATA caches are also added 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.

Memory

To provide the greatest capacity for expansion and maximum bandwidth for data intensive applications such as multimedia features, MT6236 supports up to 3 external memory devices through 16-bit host interface. High performance devices such as Mobile DDR SDRAM and Cellular RAM are supported for maximum bandwidth. Traditional devices such as burst flash 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 multimedia 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. The data bus also employs retention technology to prevent the bus from floating during a turn over.

Multi-media

The MT6236 multimedia subsystem provides both conventional parallel interface and MIPI CSI-2 interface for CMOS sensors. The camera resolution is up to 5Mpixels. With its advanced image signal processing technology, MT6236 offers high quality image and video contents. Built-in JPEG encode hardware enables real-time capture of high-resolution images.

The MT6236 also provides fancy UI capabilities through its hardware 2D accelerator. The 2D accelerator performs high speed linear transforms with filtering. SW based video codecs can be used to process various video types such as MPEG-4,H264, etc. To take advantage of the high MCU performance, GIF and PNG decoders are implemented by software as well.

In addition,MT6236 is implemented with a high performance audio synthesis technology, as well as a high quality audio amplifier to provide superior audio experiences.

Connectivity and Storage

To take advantage of its incredible multimedia strengths, MT6236 incorporates myriads of advanced connectivity and storage options for data storage and communication. MT6236 supports UART, Fast IrDA, USB 2.0 High Speed, SDIO,WIFI Interface, and MMC/SD/MS/MS Pro storage systems. These interfaces provide MT6236 users with the highest level of flexibility in implementing high-end solutions.

To achieve a complete user interface, MT6236 also brings together all the necessary peripheral blocks for a multimedia GSM/GPRS phone. The peripheral blocks include the Keypad Scanner with the capability to detect multiple key presses, SIM Controller, Real Time Clock, PWM, Serial LCD Controller, and General Purpose Programmable I/Os.

Furthermore, to provide better configurability and bandwidth for multimedia products, an additional 18-bit parallel interface is incorporated. This interface enables connection to LCD panels and NAND flash devices on the shared interfacefor additional multimedia data storage.

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Audio

Using a highly integrated mixed-signal Audio Front-End, the MT6236 architecture provides 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, MT6236 also provides Stereo Input and Analog MUX.

MT6236 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.

In addition, an 900mW class-D amplifier is also embedded to save the BOM cost of adopting external amplifier.

Radio

MT6236 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 provides the usage of a high resolution D/A Converter for controlling VCXO or crystal, reducing the need for an expensive TCVCXO. MT6236 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.

Bluetooth radio

MT6236 offers a highly integrated Bluetooth radio and baseband processor. Only a minimum of external components are required. MT6236 provides superior sensitivity and class 1 output power, thus ensures the quality of the connection with a wide range of Bluetooth devices.

MT6236 is fully compliant with Bluetooth v2.1 and offers the enhanced data rates of up to 3Mbps. It also provides the coexistence protocol with 802.11 system, with Mediatek‘s proprietary interface.

MT6236 has rich support of Bluetooth profiles. It enables diversified applications that are widely used on the handset with excellent interoperability.

Debug Function

The JTAG interface enables in-circuit debugging of the software program with the ARM926EJ-STM core. With this standardized debugging interface, MT6236 provides developers with a wide set of options in choosing ARM development kits from different third party vendors.

Power Management

An power management is embedded in MT6236 to provide the rich features that an high-end feature phone supports,including Li-ion battery charger, high performance and low quiescent current LDOs, power efficient switching regulator,and drivers for LED and backlight.

The MT6236 offers various low-power features to help reduce system power consumption. MT6236 is also fabricated in an advanced low power 65nm CMOS process, hence providing an overall ultra low leakage solution.

Package

The MT6236 device is offered in a 12.5mm×12.5mm, 382-ball, 0.5 mm pitch, TFBGA package.

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3.1.2 Platform Features

General

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

　 Integrated full-featured power management unit.

MCU Subsystem

　 ARM926EJ-STM 32-bit RISC processor

　 Java hardware acceleration for fast Java-based games and applets

　 Operating frequency: 13/78/156/312 MHz

　 64K Byte Instruction TCM and 176K Byte Data TCM

　 16K Byte Instruction Cache and 16K Byte Data Cache

　 High performance multi-layer AMBA bus

　 Dedicated DMA bus with 18 DMA channels

　 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 3 external devices

　 Supports 16-bit memory components with maximum size of up to 64M Byte each

　 Supports Mobile DDR SDRAM and Cellular RAM

　 Supports Flash and SRAM/PSRAM with burst mode

　 Industry standard Parallel LCD interface

　 Supports multimedia 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

　 Dual SIM/USIM controller with hardware T=0/T=1 protocol control

　 Real Time Clock (RTC) operating with a low-quiescent-current power supply

　 General Purpose I/Os (GPIOs) available for auxiliary application

　 4 sets of Pulse Width Modulation (PWM) output

　 7 external interrupt lines

　 4-channel auxiliary 10-bit A/D Converter

Security

　 Supports security key and 128 bit chip random ID

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Connectivity

　 3 UARTs with hardware flow control and supports of baud rate up to 921600bps

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

speeds.

　 USB 2.0 high speed 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

　 I2C master interface for peripheral management including image sensor.

　 SPI master interface for peripheral management including digital TV chip.

Power Management

　 Li-ion battery charger

　 High efficiency bulk converter for core power and memory power supply with

programmable voltage scaling

　 13 LDOs for the power supply of memory card, camera, Bluetooth, RF, SIM card, and

other diversified usage

　 One boost regulator and Four Open-Drain Output Switches to Supply/Control the LED

　 LDO type Vibrator

　 One NMOS switch to control R(GB) LED

　 Thermal Overload Protection

　 Under Voltage Lock-out Protection

　 Over Voltage Protection

　 Different level of power down modes with sophisticated software control enables

excellent power saving

performance.

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

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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

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 modem

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

　 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) 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

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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 320x480 at 24bpp

　 Per pixel alpha channel

　 True color engine

　 Supports hardware display rotation

　 Capable of combining display memories with up to 4 blending layers

Image Signal Processor

　 8/10 bit Bayer format image input

　 RGB565/YUV422 format image input

　 Capable of processing image of size up to 5M pixels

　 Color correction matrix

　 Gamma correction

　 Automatic exposure (AE) control 　 Automatic focus control

　 Automatic white balance (AWB) control

　 Programmable AE/AWB windows

　 Edge enhancement support

　 Shading compensation

　 Defect Pixel compensation

JPEG Decoder

　 SW based JPEG decode

　 Supports various YUV format, DC/AC Huffman tables, and quatization tables.

JPEG Encoder

　 ISO/IEC 10918-1 JPEG baseline mode

　 ISO/IEC 10918-2 compliance

　 Supports YUV422 and YUV420 and grayscale formats

　 Supports EXIF/JFIF

　 Standard DC and AC Huffman tables

　 Provides 14 levels of encode quality

　 Supports continuous shooting

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Image Data Processing

　 Supports Digital Zoom

　 Supports RGB and YCbCr image processing

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

　 Horizontal scaling with bicubic interpolation

　 Vertical scaling with bicubic interpolation

　 Simultaneous scaling for video buffer and display buffer

　 YUV and RGB color space conversion

　 Boundary padding

　 Pixel processing: hue/saturation/intensity/color adjustment, Gamma correction and

grayscale/invert/sepia-tone

effects

　 Hardware accelerated image editing

　 Photo frame capability

　 RGB/YCbCr format thumbnail output

MPEG-4/H.263 CODEC

　 Software Video CODEC

　 ISO/IEC 14496-2 simple profile:

　 decode @ level 0/1/2/3

　 encode @ level 0

　 ITU-T H.263 profile 0 @ level 10

　 Encoder resync marker and HEC

　 Supported visual tools for decoder: I-VOP, P-VOP, AC/DC Prediction, 4-MV,

Unrestricted MV, Error Resilience,

Short Header

　 Error Resilience for decoder: Slice Resynchronization, Data Partitioning, Reversible

VLC

　 Supported visual tools for encoder: I-VOP, P-VOP, Half-Pel, DC Prediction,

Unrestricted MV, Reversible VLC,

Short Header

　 Supports encoding motion vector of range up to –64/+63.5 pixels

　 HE-AAC decode support

　 AAC/AMR/WB-AMR audio decode support

　 AMR/WB-AMR audio encode support

H.264 Decode

　 Software Decoder

　 ISO/IEC 14496-10 baseline profile : decode @ level 3

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2D Accelerator

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

modes

　 Rectangle fill with constant or gradient color

　 BitBlt: capable with 7 rotation types, ROP4,, Mask

　 Alpha blending with 7 rotation types, per-pixel alpha and pre-multiplied alpha

　 Font caching: normal and italic font

　 Linear transform : Support perspective transform, truncate/nearest/bi-linear sample

filter.

　 Command queue with max depth of 1024

Audio CODEC

　 Supports HE-AAC codec decode

　 Supports AAC codec decode

　 Wavetable synthesis with up to 64 tones

3.1.5 Bluetooth Features

Radio features

　 Fully compliant with Bluetooth specification 2.1 + EDR

　 Low out-of-band spurious emissions supports simultaneous operation with GPS,

GSM/GPRS worldwide radio systems

　 Low-IF architecture with high degree of linearity and high order channel filter

　 Integrated T/R switch and Balun.

　 Fully integrated PA provides 10dBm output power

　 -90dBm sensitivity with excellent interference rejection performance

　 Hardware AGC dynamically adjusts receiver performance in changing environments

Baseband features

　 Up to 7 simultaneous active ACL links

　 Up to 3 simultaneous SCO and eSCO links with CVSD coding

　 eSCO support

　 Scatternet support: Up to 4 piconets simultaneously with background inquiry/page scan

　 Sniff mode, hold mode, and park mode support

　 AFH and PTA collaborative support for WLAN/BT coexistence

　 Idle mode and sleep mode enables ultra low power consumption

　 PCM interface and built-in transcoders for A-law, μ-law and linear voice with

re-transmission support

　 Built-in hardware modem engine for access code correlation, header error correction,

forward error correction, CRC,whitening, and encryption

　 Channel quality driven data rate adaptation

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　 Channel assessment for AFH

Platform features

　 Embedded ARM7 processor for Bluetooth protocol stack with built-in memory system.

　 Fully verified ROM based system with code patch for feature enhancement.

3.1.6 General Description

Figure 3-1-2 depicts the block diagram of MT6236. Based on a multi-processor

architecture, MT6236 integrates an ARM926EJ-STM core, the main processor running

high-level GSM/EDGE protocol software as well as multimedia applications, two digital

signal processor core, which manages the low-level MODEM as well as advanced audio

functions ,and an ARM7EJ-STM core, the dedicated processor running Bluetooth

baseband and link control protocol, as well as the Bluetooth radio control.

MT6236 consists of the following subsystems:

　 Microcontroller Unit (MCU) Subsystem: includes an ARM926EJ-STM 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 channel codec;

　 Multimedia Subsystem: integrates several advanced accelerators to support multimedia

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 MT6236.

　 Bluetooth subsystem: includes an ARM7EJ-STM RISC processor with embedded

ROM/RAM system, baseband processor, and a high-performance radio block.

　 Power management unit: a self-contained power supply source which also controls the

charging and system startup

Circuitry.

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Figure.3-1-2 MT6236 BLOCK DIAGRAM

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LG X350 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual