LG KP270 User manual

Service Manual Model : KP270
Service Manual
KP270
Date: October, 2008 / Issue 1.0
Internal Use Only

LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 3 -
1. INTRODUCTION ...............................5
1.1 Purpose .................................................. 5
1.2 Regulatory Information............................ 5
1.3 Abbreviations .......................................... 7
2. PERFORMANCE...............................8
2.1 Supporting Standard ................................8
2.2 Main Parts: Solution.................................8
2.3 HW Feature..............................................9
2.4 HW Spec................................................11
3. TECHNICAL BRIEF ........................15
3.1 Functional Block Diagram ......................15
3.2 Baseband Processor Introduction..........16
3.3 Power management IC ..........................28
3.4 Power ON/OFF ......................................35
3.5 SIM Interface..........................................36
3.6 MICRO SD connector ............................37
3.7 Memory ..................................................38
3.8 LCD Display ...........................................39
3.9 Keypad switching & scanning ................40
3.10 keypad back-light illumination ..............41
3.11 LCD back-light illumination ..................43
3.12 Battery voltage monitor ........................44
3.13 Audio....................................................45
3.14 BLUETOOTH .......................................48
3.15 18PIN Interface connector ...................51
3.16 General Description .............................52
3.17 GSM Part .............................................55
3.18 WCDMA Part .......................................60
3.19 GSM Power Amplifier Module..............62
3.20 WCDMA Band1 Power Amplifier
Module .................................................63
3.21 WCDMA Band1 Low Noise
Amplifier ..............................................64
3.22 WCDMA Band1 Duplexer ....................65
4. TROUBLE SHOOTING ...................66
4.1 Trouble shooting test setup....................66
4.2 Power on trouble....................................67
4.3 Charging Trouble ...................................70
4.4 UBS Trouble ..........................................73
4.5 SIM Detect Trouble ................................75
4.6 Number Key Sense Trouble...................78
4.7 Multi Key sense Trouble ........................80
4.8 Keypad backlight Trouble ......................82
4.9 Micro SD Trouble ...................................84
4.10 Audio Trouble.......................................86
4.11 Microphone Trouble .............................90
4.12 Camera Trouble ...................................94
4.13 Main LCD Trouble................................97
4.14 Bluetooth Trouble.................................99
4.15 RF Component...................................102
4.16 RF SIGNAL PATH .............................103
4.17 Trouble Shooting of GSM Part...........104
4.18 Trouble Shooting of WCDMA Part .....112
5. DOWNLOAD .....................................118
5.1 USB Driver Installation to Download....118
5.2 Device Detection..................................120
5.3 USB Port Mapping ...............................121
5.4 Configuration to Download...................122
5.5 Nexus setting .......................................124
6. CIRCUIT DIAGRAM ......................125
7. BGM PIN MAP...............................133
8. PCB LAYOUT ................................139
9. RF Calibration ..............................145
9.1 Test Equipment Setup .........................145
9.2 Calibration Step ...................................145
10. EXPLODED VIEW &
REPLACEMENT PART LIST ......151
10.1 Exploded View ...................................151
10.2 Replacement Parts ............................153
10.3 Accessory ..........................................174
Table Of Contents

- 4 -
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 5 -
1. INTRODUCTION
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the
features of the KP270.
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. LGE
does not warrant that this product is immune from the above case but will prevent unauthorized use of
common carrier telecommunication service of facilities accessed through or connected to it. LGE 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 KP270 or compatibility with the net
work, 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 the KP270 must be performed only by the LGE or its authorized agent. The
user may not make any changes and/or repairs expect as specifically noted in this manual.
Therefore,note that unauthorized alternations or repair may affect the regulatory status of the system
and may void any remaining warranty.
1. INTRODUCTION
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 6 -
1. INTRODUCTION
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
An KP270 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 Device (ESD), are indicated by the Following
information is ESD handling:
• 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 package as
described.
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 7 -
1. INTRODUCTION
1.3 Abbreviations
For the purposes of this manual, following abbreviations apply:
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
APC Automatic Power Control
BB Baseband
BER Bit Error Ratio
CC-CV Constant Current - Constant Voltage
DAC Digital to Analog Converter
DCS Digital Communication System
dBm dB relative to 1 milliwatt
DSP Digital Signal Processing
EEPROM Electrical Erasable Programmable Read-Only Memory
EL Electroluminescence
ESD Electrostatic Discharge
FPCB Flexible Printed Circuit Board
GMSK Gaussian Minimum Shift Keying
GPIB General Purpose Interface Bus
GSM Global System for Mobile Communications
IPUI International Portable User Identity
IF Intermediate Frequency
LCD Liquid Crystal Display
LDO Low Drop Output
LED Light Emitting Diode
OPLL Offset Phase Locked Loop
PAM Power Amplifier Module
PCB Printed Circuit Board
PGA Programmable Gain Amplifier
PLL Phase Locked Loop
PSTN Public Switched Telephone Network
RF Radio Frequency
RLR Receiving Loudness Rating
RMS Root Mean Square
RTC Real Time Clock
FEM Front End Module
SIM Subscriber Identity Module
SLR Sending Loudness Rating
SRAM Static Random Access Memory
STMR Side Tone Masking Rating
TA Travel Adapter
TDD Time Division Duplex
TDMA Time Division Multiple Access
UART Universal Asynchronous Receiver/Transmitter
VCO Voltage Controlled Oscillator
VCTCXO Voltage Control Temperature Compensated Crystal Oscillator
WAP Wireless Application Protocol

LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
2. PERFORMANCE
- 8 -
2.1 Supporting Standard
2.2 Main Parts: Solution
Item Feature Comment
Supporting Standard WCDMA 2100
EGSM900/DCS1800/PCS1900 with
seamless handover
Phase 2+(include AMR)
SIM Toolkit : Class 1, 2, 3, A-E
Frequency Range EGSM900 TX : 880 - 915 MHz
EGSM900 RX : 925 - 960 MHz
DCS1800 TX : 1710 - 1785 MHz
DCS1800 RX : 1805 - 1880 MHz
PCS1900 TX : 1850 - 1910 MHz
PCS1900 RX : 1930 - 1990 MHz
WCDMA2100 TX : 1920 - 1980 MHz
WCDMA2100 RX : 2110 - 2170 MHz
Application Standard WAP 2.0, JAVA 2.0
Item Part name Comment
Digital Baseband PMB8868 (Infineon)
Analog Baseband PMB8868 (Infineon)
RF chip PMB6952 (Infineon)

- 9 -
2. PERFORMANCE
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2.3 HW Feature
Item Feature Comment
Form Factor Slide type
Battery 1) Capacity
Standard : Li-Ion, 900mAh
2) Packaging Type : Soft Pack
Size 98 x 48 x 16.9 mm
Weight 98 g With Battery
GSM 200hours @paging period 5
WCDMA 210 hours @DRX=1.28
GSM 160min @ Power Level 7
WCDMA 160min @Tx=12dBm
Charging time 3 hours @power OFF/900mAh
RX sensitivity EGSM900 : -105 dBm
DCS1800 : -105 dBm
PCS1900 : -105 dBm
PCS1900 : -105 dBm
WCDMA2100 : -106.7 dBm
EGSM900 : 33 dBm Class4 (EGSM900)
DCS1800 : 30 dBm Class1(DCS)
PCS1900 : 30 dBm Class1(PCS)
EGSM900 : 27 dBm E2 (EGSM900)
DCS1800 : 26 dBm E2 (DCS)
PCS1900 : 26 dBm E2 (PCS)
GPRS compatibility GPRS Class 12
EDGE compatibility EDGE Class 12
Display Main LCD(2”, 176 x 220)/TFT
Built-in Camera 1.3 Mega pixel
ANT Main : Internal Fixed Type
System connector 18 Pin
Ear Phone Jack 18pin, 4 Pole, Stereo
PC synchronization Yes
TX output
power
GSM/
GPRS
EDGE
Stand-by
time
Talk time

- 10 -
2. PERFORMANCE
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Feature Comment
Speech coding FR, EFR, HR, AMR
Vibrator Built in Vibrator
Blue Tooth V1.2, A2DP
Voice Recording Yes
Speaker Phone mode Yes
Support
Travel Adapter Yes
CDROM Yes
Stereo Headset Yes
Data Cable No
T-Flash Yes Not Equipped

- 11 -
2. PERFORMANCE
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2.4 HW Spec.
2.4.1 GSM Transmitter/Receiver spec.
Item Specification
1Frequency Band EGSM900
TX : 880 - 915 MHz
RX : 925 - 960 MHz
DCS1800
TX : 1710 - 1785 MHz
RX : 1805 - 1880 MHz
PCS1900
TX : 1850 - 1910 MHz
RX : 1930 - 1990 MHz
2Phase Error Rms : 5°
Peak : 20°
3Frequency Error GSM : 0.1 ppm
DCS/PCS : 0.1 ppm
4EMC(Radiated Spurious GSM/DCS : < -28dBm
Emission Disturbance)
5Transmitter Output power and GSM : 5dBm - 33dBm 3dB
Burst Timing DCS/PCS : 0dBm - 30dBm 3dB
6Burst Timing < 3.69us
7Spectrum due to modulation out 200kHz : -36dBm
to less than 1800kHz offset 600kHz : -51dBm/-56dBm
8Spectrum due to modulation out GSM
to larger than 1800kHz offset to 1800-3000kHz :< -63dBc(-46dBm)
the edge of the transmit band 3000kHz-6000kHz : <-65dBc(-46dBm)
6000kHz < : < -71dBc(-46dBm)
DCS
1800-3000kHz :< -65dBc(-51dBm)
6000kHz < : < -73dBc(-51dBm)

- 12 -
2. PERFORMANCE
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Specification
9 Spectrum due to switching 400kHz : -19dBm/-22dBm(5/0), -23dBm
transient 600kHz : -21dBm/-24dBm(5/0), -26dBm
10 Reference Sensitivity - TCH/FS Class II(RBER) : -105dBm(2.439%)
11 Usable receiver input level range 0.012(-15 - -40dBm)
12 Intermodulation rejection - 800kHz, 1600kHz : -98dBm / -96dBm (2.439%)
Speech channels
13 AM Suppression -98dBm/-96dBm (2.439%)
- GSM : -31dBm
- DCS : -29dBm
14 Timing Advance 0.5T

- 13 -
2. PERFORMANCE
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2.4.2 WCDMA Transmitter spec.
Item Specification
1 Transmit Frequency 1920 MHz ~ 1980 MHz
2Maximum Output Power +24 dBm / 3.84 MHz, +1 / -3 dB
3Frequency Error within 0.1 PPM
4Open Loop Power Control Normal Conditions : within 9 dB,
Extreme Conditions : within 12 dB
5Minimum Transmit Power < -50 dBm / 3.84 MHz
6Occupied Bandwidth < 5 MHz at 3.84 Mcps (99% of power)
7Adjacent Channel Leakage > 33 dB @ 5 MHz,
Power Ratio (ACLR) > 43 dB @ 10 MHz
8Spurious Emissions < -36 dBm / 1 kHz RW @ 9 kHz ≤ f < 150 kHz
|f-fc| > 12.5 MHz < -36 dBm / 10 kHz RW @ 150 KHz ≤ f < 30 MHz
< -36 dBm / 100 kHz RW @ 30 MHz ≤ f < 1 GHz
< -30 dBm / 1 MHz RW @ 1 GHz ≤ f < 12.75 GHz
< -41 dBm / 300 kHz RW @ 1893.5 MHz < f < 1919.6 MHz
< -67 dBm / 100 kHz RW @ 925 MHz ≤ f ≤ 935 MHz
< -79 dBm / 100 kHz RW @ 935 MHz < f ≤ 960 GHz
< -71 dBm / 100 kHz RW @ 1805 MHz ≤ f ≤ 1880 MHz
9Transmit Intermodulation < -31 dBc @ 5 MHz & < -41 dBc @ 10 MHz
when Interference CW Signal Level = -40 dBc
10 Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm
11 Peak Code Domain Error < -15 dB at Pout ≥ -20 dBm

LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
- 14 -
2.4.3 WCDMA Receiver spec.
Item Specification
1 Receive Frequency 2110 ~ 2170 MHz
2Reference Sensitivity Level BER < 0.001 when Îor = -106.7 dBm / 3.84 MHz
3Maximum Input Level BER < 0.001 when Îor = -25 dBm / 3.84 MHz
4Adjacent Channel Selectivity ACS > 33 dB where BER < 0.001 when Îor =
(ACS) -92.7 dBm / 3.84 MHz
& Ioac = -52 dBm / 3.84 MHz @ 5 MHz
5Blocking Characteristic BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz
& Iblocking = -56 dBm / 3.84 MHz @ Fuw(offset)
= 10 MHz
or Iblocking = -44 dBm / 3.84 MHz @ Fuw(offset)
= 15 MHz
6Spurious Response BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz &
Iblocking = -44 dBm
7Intermodulation BER < 0.001 when Îor= -103.7 dBm / 3.84 MHz
& Iouw1 = -46 dBm @ Fuw1(offset) = 10 MHz
& Iouw2 = -46 dBm / 3.84 MHz @ Fuw2(offset) =
20 MHz
8Spurious Emissions < -57 dBm / 100 kHz BW @ 9 kHz ≤ f < 1 GHz
< -47 dBm / 1 MHz BW @ 1 GHz ≤ f ≤ 12.75 GHz
9nner Loop Power control in uplink Adjust output(TPC command)
cmd 1dB 2dB 3dB
+1 +0.5/1.5 +1/3 +1.5/4
0 -0.5/+0.5 -0.5/+0.5 -0.5/+0.5
-1 -0.5/-1.5 -1/-3 -1.5/-4
group(10equal command group)
+1 +8/+12 +16/+24

LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
- 15 -
3.1 Functional Block Diagram
3. TECHNICAL BRIEF
[Figure 3.1] Functional Block Diagram
MP-EH
PMB8868
CAMERA
(1.3M)
RCV/SPK
MIC
LCD
QCIF
176X220
18Pin MMI
Connector
18Pin MMI
Connector
KEYPAD I/F
UART/
PCM
MOTOR_EN
A
TA
D
DN
A
N
ATAD_MARDS
RDDA_UBE
Ear-Phone
UART0
USB
Filter
BT
AMP
EPP1
EPN2
USIM I/F
SDRAM
512Mbit
NAND
Flash
1Gbit
)51:0(ATAD
)82:0(A
)51
:
0(
A
TA
D
LCDD[0:7]
RESET
CS/CD/WR
VSYNC
32K
26M 32K
I2C
MMC I/F
PMIC
PMB6821
RF
EDGE
PAM
FEM
Duplex UMTS
PAM
Transceiver
PMB6952
EDGE
26M
UMTS 2100
GSM900/1800/1900
MOTOR
EPPA1
EPPA2
MICP1
MICN1
MICP2
MICN2
Ear-Phone
MIC
CAMD[0:7]
PWR_EN
RESET
P/MCLK
H/VSYNC
RADIO_OUT_L
RADIO_OUT_R
HS_L
HS_R
REC_P
REC_N
I2C
HALL SW
Charge
PUMP
Backup
Bat
SLIDE DETECT
Charging IC
BATTERY
TA
CHG_EN
_PPR
I2C
LDO
ON_OFF
UMTS
LNA
2G I/Q
3G Tx I/Q
3G Rx I/Q
ANT_SEL (1:6)
PA_LEVEL (2G)
3G_VGC_TX
2G_EN / 2G_DATA / 2G_CLK
3G_LD / 3G_MASTERON
3G_EN / 3G_DATA / 3G_CLK
USB
LDO
MP-EH
PMB8868
CAMERA
(1.3M)
RCV/SPK
MIC
LCD
QCIF
176X220
18Pin MMI
Connector
18Pin MMI
Connector
KEYPAD I/F
UART/
PCM
MOTOR_EN
A
TA
D
DN
A
N
ATAD_MARDS
RDDA_UBE
A
TA
D
DN
A
N
ATAD_MARDS
RDDA_UBE
Ear-Phone
UART0
USB
FilterFilter
BT
AMP
EPP1
EPN2
USIM I/F
SDRAM
512Mbit
NAND
Flash
1Gbit
SDRAM
512Mbit
NAND
Flash
1Gbit
)51:0(ATAD
)82:0(A
)51
:
0(
A
TA
D
LCDD[0:7]
RESET
CS/CD/WR
VSYNC
32K
26M 32K
I2C
MMC I/F
PMIC
PMB6821
RF
EDGE
PAM
FEM
Duplex UMTS
PAM
Transceiver
PMB6952
EDGE
26M
UMTS 2100
GSM900/1800/1900
MOTOR
EPPA1
EPPA2
MICP1
MICN1
MICP2
MICN2
Ear-Phone
MIC
CAMD[0:7]
PWR_EN
RESET
P/MCLK
H/VSYNC
RADIO_OUT_L
RADIO_OUT_R
HS_L
HS_R
REC_P
REC_N
I2C
HALL SW
Charge
PUMP
Backup
Bat
SLIDE DETECT
Charging IC
BATTERY
TATA
CHG_EN
_PPR
I2C
LDO
ON_OFF
UMTS
LNA
2G I/Q
3G Tx I/Q
3G Rx I/Q
ANT_SEL (1:6)
PA_LEVEL (2G)
3G_VGC_TX
2G_EN / 2G_DATA / 2G_CLK
3G_LD / 3G_MASTERON
3G_EN / 3G_DATA / 3G_CLK
USBUSB
LDO

- 16 -
3. TECHNICAL BRIEF
3.2 Baseband Processor Introduction
3.2.1 General description
S-GOLD3H-LC is a HSDPA/WCDMA/EDGE/GPRS/GSM system in package solution consisting of a
mixed signal baseband IC with a 3G coprocessor IC.
l Baseband IC containing all analog and digital functionality of a cellular radio. Additionally SGOLD3TM
Provides multimedia extensions such as camera, software MIDI, MP3 sound. It is designed as a single
chip solution, integrating the digital and mixed signal portions of the base band in 0.09um, 1.2V
technology.
The chip will support the FR, EFR, HR and AMR-NB vocoding.
S-GOLD3™ support multi-slot operation modes HSCSD (up to class 10), GPRS for high speed data
application (up to class 12), EGPRS (up to class 12) and DTM(class11) without additional external
hardware.
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
[Figure 3.2] Top level block diagram of the MPEH(PMB8868)

- 17 -
3. TECHNICAL BRIEF
3.2.2 Block Description
• Processing core
ARM926EJ-S 32 bit processor core for controller functions. The ARM926EJ-S includes an MMU,
and the Jazelle Java extension for Java acceleration.
- TEAKLite DSP core
• ARM-Memory
- 32k Byte Boot ROM on the AHB
- 128k Byte SRAM on the AHB, flexibly usable as program or data RAM
- 32k Byte Instruction Cache
- 32k Byte Data Cache
- 8k Byte Instruction Tightly coupled Memory(I-TCM)
- 8k Byte Data tightly coupled memory (D-TCM)
• DSP-Memory
- 120k x 16bit Program ROM
- 8k x 16bit Program RAM
- 72k x 16bit Data ROM
- 48k x 16bit Data XRAM
-5k x 16bit Data YRAM
- Incremental Redundancy(IR) Memory of 35904 words of 16bit
• Shared Memory Block
1.5K x 32bit Shared RAM(dual ported) between controller system and TEAKLite.
• Controller Bus system
The processor cores and their peripherals are connected by powerful buses.
-Multi-layer AHB for connecting the ARM and the other master capable building blocks with
theinternal and external memories and with the peripheral buses.
-An FPI-Bus for connecting GSM peripherals, called hereafter FPI3 bus.
-A controller FPI bus for connecting the low performance controller peripherals such as keypad,
Called hereafter fPI2 bus.
-FPI2 and FPI3 are connected asynchronously to the AHB buses.
• Clock system
The clock system allows widely independent selection of frequencies for the essential parts of the
SGOLD3H-LC. Thus power consumption and performance can be optimized for each application.
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

- 18 -
3. TECHNICAL BRIEF
• Functional Hardware block
- CPU and DSP Timers
- MOVE coprocessor performing motion estimation for video encoding algorithms(H.263, MPEG-4)
- Programmable PLL with additional phase shifters for system clock generation
- GSM Timer Module that off-loads the CPU from radio channel timing
- GMSK / 8-PSK Modulator according to GSM-standard 05.04 (5/2000)
- GMSK Modulator: gauss-filter with B*T=0.3
- EDGE Modulator: 8PSK-modulation with linearized GMSK-Pulse-Filter
- Hardware accelerators for equalizer and channel decoding.
- Incremental Redundancy memory for EDGE class 12 support
- A5/1, A5/2, A5/3 Cipher unit
- GEA1, GEA2, GEA3 Cipher Unit to support GPRS data transmission
- Advanced static and dynamic power management features including TDMA-Frame synchronous
low power mode and enhanced CPU modes(idle and sleep modes)
3.2.3 RF Interface(T_OUT)
S-Gold3H-LC uses this interface to control RF IC and Peripherals.
[Table 3.2.3-1] RF Interface Spec.
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
T_OUT
Resource Interconnection Description
T_OUT0 TXON_PA PAM Power on
T_OUT1 -
T_OUT2 ANT_SEL1
T_OUT3
T_OUT4 FEM control
T_OUT5 FEM control
T_OUT6 PA_MODE PAM Mode select
T_OUT7 ANT_SEL2
T_OUT8 ANT_SEL3
T_OUT9
T_OUT10

- 19 -
3. TECHNICAL BRIEF
3.2.4 ADC channel
ADC block is composed of 11 external ADC channel. This block operates charging process and other
related process by reading battery voltage and other analog values.
[Table 3.2.4-1] S-Gold3 ADC channel usage
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
ADC channel
Resource Interconnection Description
M0 BAT_ID Battery temperature measure
M1 RF_TEMP RF block temperature measure
kM2 N.C
M3 JACK_TYPE Accessory type detect
M4 N.C
M5 N.C
M6 N.C
M7 H/W VERSION H/W version detect
M8 VBAT Battery supply voltage measure
M9 N.C
M10 N.C

3.2.5 GPIO map
Over a hundred allowable resources, KP270 is using as follows except dedicated to SIM and Memory.
KP2700 GPIO(General Purpose Input/Output) Map, describing application, I/O state, and enable level,
is shown in below table
[Table 3.2.5-1] S-Gold3H-LC GPIO pin Map
- 20 -
3. TECHNICAL BRIEF
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Port Function Net Name Description
KEY MATRIX
KP_IN0 KEYIN0
KP_IN1 KEYIN1
KP_IN2 KEYIN2
KP_IN3 KEYIN3
KP_IN4 KEYIN4
KP_IN5 KEYIN05
KP_IN6 KEYOUT5
KP_OUT0 KEYOUT0
KP_OUT1 KEYOUT1
KP_OUT2 KEYOUT2
KP_OUT3 KEYOUT3
USIF1
USIF1_RXD_MRST UART_RX UART Data
USIF1_TXD_MTSR UART_TX UART Data
USIF1_RTS_N USB_ DAT_VP USB Data
USIF1_CTS_N USB_SE0_VM USB Data
USIF2
USIF2 _RXD_MRST BT_UART_RX Bluetooth UART Data
USIF2 _TXD_MTSR BT_UART_TX Bluetooth UART Data
USIF2_RTS_N BT_UART_RTS Bluetooth RTS
USIF2_CTS_N BT_UART_CTS Bluetooth CTS
USIF3
GPIO_19 FM_RESET FM radio reset
USIF3 _TXD_MTSR
GPIO_21 VT_PWR_EN VT camera power enable
CLK
CLK32K CLK32k For FM Radio, BT CLK32K

- 21 -
3. TECHNICAL BRIEF
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
GPIO_22 Not used
CAMERA I/F
CIF_D0 CAM_D0 Camera DATA[0]
CIF_D1 CAM_D1 Camera DATA[1]
CIF_D2 CAM_D2 Camera DATA[2]
CIF_D3 CAM_D3 Camera DATA[3]
CIF_D4 CAM_D4 Camera DATA[4]
CIF_D5 CAM_D5 Camera DATA[5]
CIF_D6 CAM_D6 Camera DATA[6]
CIF_D7 CAM_D7 Camera DATA[7]
CIF_PCLK CAM_PCLK Camera pixel clock
CIF_HSYNC CAM_HSYNC Camera H sync
CIF_VSYNC CAM_VSYNC Camera V sync
CLKOUT2 CAM_MCLK Camera main clock
CIF_PD CAM_PWR_EN Camera power down(active high)
CIF_RESET CAM_RESET Camera reset
LCD I/F
DIF_D0 LCD_D0 LCD data[0]
DIF_D1 LCD_D1 LCD data[1]
DIF_D2 LCD_D2 LCD data[2]
DIF_D3 LCD_D3 LCD data[3]
DIF_D4 LCD_D4 LCD data[4]
DIF_D5 LCD_D5 LCD data[5]
DIF_D6 LCD_D6 LCD data[6]
DIF_D7 LCD_D7 LCD data[7]
DIF_D8 DIF_ID LCD data[8]
DIF_CS1 _LCD_CS1 MAIN LCD chip select
EINT4 FM_INT FM radio interrupt
DIF_CD LCD_CD Command Data switch
DIF_WR _LCD_WR LCD Write
GPIO_98 VT_CAM_RESET VT camera reset
DIF_HD LCD Reset
DIF_VD LCD_VSYNC LCD Vsync
DIF_RESET1 _LCD_RESET LCD Reset
DIF_RESET2 A_RESET 3G reset