LG KG280 User manual

Service Manual Model : MG280/KG280
Service Manual
MG280/KG280
Date: August, 2007 / Issue 1.0
Presione tecla Cáma
4:11 am 05/01 Vie
Internal Use Only

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1. INTRODUCTION ...............................5
1.1 Purpose .................................................. 5
1.2 Regulatory Information............................ 5
1.3 Abbreviations .......................................... 7
2. PERFORMANCE...............................9
2.1 H/W Features...........................................9
2.2 Technical Specification ..........................10
3. TECHNICAL BRIEF ........................15
3.1 Power Amplifier (SKY77318, U600).......15
3.2 Transceiver (AD6549, U601) .................17
3.3 FEM for Triband(FL600) ........................19
3.4 26 MHz Clock (VCTCXO, X600)............20
3.5 Baseband Processor (AD6720 , U101)..21
3.6 Battery Charging Block ..........................26
3.7 Display and Interface .............................28
3.8 Camera IC(AIT701G , U401) .................30
3.9 Keypad Switches and Scanning ............32
3.10 Microphone ..........................................34
3.11 Main Speaker.......................................34
3.12 Headset Interface.................................36
3.13 Key Back-light Illumination...................37
3.14 LCD Back-light Illumination..................38
3.15 VIBRATOR...........................................39
3.16 Bluetooth..............................................40
4. TROUBLE SHOOTING ...................41
4.1 RF Component.......................................41
4.2 RX Trouble.............................................42
4.3 TX Trouble .............................................47
4.4 Power On Trouble..................................53
4.5 Charging Trouble ...................................55
4.6 Vibrator Trouble .....................................57
4.7 LCD Trouble...........................................59
4.8 Camera Trouble .....................................62
4.9 Speaker Trouble ....................................65
4.10 SIM Card Interface Trouble..................67
4.11 Earphone Trouble ................................69
4.12 KEY backlight Trouble .........................71
4.13 Receiver Trouble..................................73
4.14 Microphone Trouble .............................75
4.15 RTC Trouble ........................................77
4.16 Slide on/off Trouble..............................79
5. DOWNLOAD.......................................81
5.1 Download ...............................................81
6. BLOCK DIAGRAM ..........................87
7. Circuit Diagram ..............................89
8. pcb layout .......................................99
9. ENGINEERING MODE ..................105
9.1 BB Test [MENU 1]................................106
9.2 RF Test [MENU 2]................................108
9.3 MF mode [MENU 3] .............................108
9.4 Trace option [MENU 4] ........................109
9.5 Call timer [MENU 5] .............................109
9.6 Fact. Reset [MENU 6] ..........................109
9.7 S/W version..........................................109
10. STAND ALONE TEST .................110
10.1 Introduction ........................................110
10.2 Setting Method...................................110
10.3 Means of Test ....................................111
11. AUTO CALIBRATION..................113
11.1 Overview ............................................113
11.2 Equipment List ...................................113
11.3 Test Jig Operation..............................114
11.4 Procedure ..........................................115
11.5 AGC ...................................................118
11.6 APC....................................................118
11.7 ADC ...................................................118
12. EXPLODED VIEW &
REPLACEMENT PART LIST ..... 119
12.1 Exploded View .................................. 119
12.2 Replacement Parts ............................121
12.3 Accessory ......................................... 137
Table Of Contents
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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1. INTRODUCTION
1.1 Purpose
This manual provides the information necessary to repair, calibration, 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 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.
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 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 © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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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
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 Device (ESD), are indicated by the sign.
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 © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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1. INTRODUCTION
1.3 Abbreviations
For the purposes of this manual, following abbreviations apply:
LGE Internal Use Only Copyright © 2007 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 milli watt
DSP Digital Signal Processing
EEPROM Electrical Erasable Programmable Read-Only Memory
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

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1. INTRODUCTION
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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
SAW Surface Acoustic Wave
SIM Subscriber Identity Module
SLR Sending Loudness Rating
SRAM Static Random Access Memory
PSRAM Pseudo SRAM
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

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2. PERFORMANCE
2.1 H/W Features
2. PERFORMANCE
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Feature Comment
Standard Battery Li-ion Polymer, 3.7V 800mAh
Stand by TIME Up to 200 hrs : Paging Period 5, RSSI 85dBm
Talk time Up to 200min : GSM Tx Level 7
Stand by time Up to 200 hours (Paging Period: 5, RSSI: -85 dBm)
Charging time Approx. 3 hours
RX Sensitivity GSM850/EGSM:-109dBm, DCS/PCS: -109dBm
TX output power GSM850/EGSM: 32.5dBm(Level 5),
DCS/PCS: 29.5dBm(Level 0)
GPRS compatibility Class 10
SIM card type 3V Small
Display LCD : TFT 128 × 160 pixel 262K Color
Hard icons. Key Pad
0 ~ 9, #, *, Touch Key(Up/Down Navigation Key
Status Indicator Menu Key, Clear Key, Back Key, Confirm Key
Send Key, Soft Key(Left/Right))
Volume Key, PWR Key, Camera Key
ANT Internal
EAR Phone Jack Yes (mono)
PC Synchronization Yes
Speech coding EFR/FR/HR
Data and Fax Yes
Vibrator Yes
Loud Speaker Yes
Voice Recoding Yes
Microphone Yes
Speaker/Receiver One way speaker
Travel Adapter Yes
MIDI 64 Poly (Mono SPK)
Camera VGA

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2. PERFORMANCE
2.2 Technical Specification
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Description Specification
GSM850
TX: Fl(n)= 824.2+0.2*(n-128), 128 ≤ n ≤ 251
RX: Fu(n)= Fl(n)+45
EGSM
1Frequency Band TX: Fl(n)= 890+0.2*n, 0 n 124
Fl(n)= 890+0.2*(n-1024), 975 n 1023
RX: Fu(n)= Fl(n)+45
DCS
TX: Fl(n)= 1710.2+0.2*(n-512), 512 ≤ n ≤ 885
RX: Fu(n)= Fl(n)+95
PCS
TX: Fl(n)= 1850.2+0.2(n-512), 512 ≤ n ≤ 810
RX: Fu(n)= Fl(n)+80
2Phase Error RMS < 5 degrees
Peak < 20 degrees
3Frequency Error < 0.1 ppm
GSM850/EGSM
Level Power Toler. Level Power Toler.
533 dBm 2dB 13 17 dBm 3dB
631 dBm 3dB 14 15 dBm 3dB
729 dBm 3dB 15 13 dBm 3dB
827 dBm 3dB 16 11 dBm 5dB
925 dBm 3dB 17 9 dBm 5dB
10 23 dBm 3dB 18 7 dBm 5dB
11 21 dBm 3dB 19 5 dBm 5dB
4Power Level 12 19 dBm 3dB
DCS/PCS
Level Power Toler. Level Power Toler.
030 dBm 2dB 8 14 dBm 3dB
128 dBm 3dB 9 12 dBm 4dB
226 dBm 3dB 10 10 dBm 4dB
324 dBm 3dB 11 8 dBm 4dB
422 dBm 3dB 12 6 dBm 4dB
520 dBm 3dB 13 4 dBm 4dB
618 dBm 3dB 14 2 dBm 5dB
716 dBm 3dB 15 0 dBm 5dB

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2. PERFORMANCE
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Description Specification
GSM850, EGSM
Offset from Carrier (kHz). Max. dBc
100 +0.5
200 -30
250 -33
400 -60
600~ <1,200 -60
1,200~ <1,800 -60
1,800~ <3,000 -63
3,000~ <6,000 -65
5Output RF Spectrum 6,000 -71
(due to modulation) DCS/PCS
Offset from Carrier (kHz). Max. dBc
100 +0.5
200 -30
250 -33
400 -60
600~ <1,200 -60
1,200~ <1,800 -60
1,800~ <3,000 -65
3,000~ <6,000 -65
6,000 -73
GSM850, EGSM
Offset from Carrier (kHz) Max. (dBm)
Output RF Spectrum 400 -19
6(due to switching transient) 600 -21
1,200 -21
1,800 -24

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2. PERFORMANCE
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Description Specification
DCS/PCS
Offset from Carrier (kHz). Max. (dBm)
Output RF Spectrum 400 -22
6(due to switching transient) 600 -24
1,200 -24
1,800 -27
7Spurious Emissions Conduction, Emission Status
GSM850, EGSM
8Bit Error Ratio BER (Class II) < 2.439% @-102 dBm
DCS,PCS
BER (Class II) < 2.439% @-100 dBm
9RX Level Report Accuracy 3 dB
10 SLR 8 3 dB
Frequency (Hz) Max.(dB) Min.(dB)
100 -12 -
200 0 -
300 0 -12
11 Sending Response 1,000 0 -6
2,000 4 -6
3,000 4 -6
3,400 4 -9
4,000 0 -
12 RLR 2 3 dB
Frequency (Hz) Max.(dB) Min.(dB)
100 -12 -
200 0 -
300 2 -7
500 *-5
13 Receiving Response 1,000 0 -5
3,000 2 -5
3,400 2 -10
4,000 2
*Mean that Adopt a straight line in between 300 Hz
and 1,000 Hz to be Max. level in the range.

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2. PERFORMANCE
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Description Specification
14 STMR 13 5 dB
15 Stability Margin > 6 dB
dB to ARL (dB) Level Ratio (dB)
-35 17.5
-30 22.5
-20 30.7
16 Distortion -10 33.3
033.7
731.7
10 25.5
17 Side Tone Distortion Three stage distortion < 10%
18 System frequency 2.5ppm
(13 MHz) tolerance
19 32.768KHz tolerance 30ppm
At least 65 dBspl under below conditions:
20 Ringer Volume 1. Ringer set as ringer.
2. Test distance set as 50 cm
21 Charge Current Fast Charge : < 430 mA
Slow Charge : < 160 mA
Antenna Bar Number Power
5-85 dBm ~
4-90 dBm ~ -86 dBm
22 Antenna Display 3 -95 dBm ~ -91 dBm
2-100 dBm ~ -96 dBm
1-105 dBm ~ -101 dBm
0~-105 dBm
Battery Bar Number Voltage
03.48 ~ 3.63 V
23 Battery Indicator 1 3.63 ~ 3.70 V
23.70 ~ 3.76 V
33.76 ~ 3.89 V
43.89 V ~
24 Low Voltage Warning 3.63 0.03V (Call) every 1 minutes
3.48 0.03V (Standby)

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2. PERFORMANCE
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Description Specification
25 Forced shut down Voltage 3.33 0.03 V
1 Li-ion Battery
26 Battery Type Standard Voltage = 3.7 V
Battery full charge voltage = 4.2 V
Capacity: 830mAh
Switching-mode charger
27 Travel Charger Input: 100 ~ 240 V, 50/60 Hz
Output: 5.2 V, 800 mA

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3. TECHNICAL BRIEF
3.1 Power Amplifier (SKY77318, U600)
The SKY77318 Power Amplifier Module (PAM) is designed in a low profile (1.2 mm), compact form
factor for quad-band cellular handsets comprising GSM850/900, DCS1800, and PCS1900 operation.
The PAM also supports Class 12 General Packet Radio Service (GPRS) multi-slot operation. The
module consists of separate GSM850/900 PA and DCS1800/PCS1900 PA blocks,
impedancematching circuitry for 50 Ω input and output impedances, and a Power Amplifier Control
(PAC) block with an internal current-sense resistor. The custom BiCMOS integrated circuit provides
the internal PAC function and interface circuitry. Fabricated onto a single Gallium Arsenide (GaAs) die,
one Heterojunction Bipolar Transistor (HBT) PA block supports the GSM850/900 bands and the other
supports the DCS1800 and PCS1900 bands. Both PA blocks share common power supply pins to
distribute current. The GaAs die, the Silicon (Si) die, and the passive components are mounted on a
multi-layer laminate substrate. The assembly is encapsulated with plastic overmold. RF input and
output ports of the SKY77318 are internally matched to a 50 Ω load to reduce the number of external
components for a quad-band design. Extremely low leakage current (2.5 µA, typical) of the dual PA
module maximizes handset standby time. The SKY77318 also contains band-select switching circuitry
to select GSM (logic 0) or DCS/PCS (logic 1) as determined from the Band Select (BS) signal. In
Figure 1 below, the BS pin selects the PA output (DCS/PCS OUT or GSM850/900 OUT) and the
Analog Power Control (VAPC) controls the level of output power. The VBATT pin connects to an
internal current-sense resistor and interfaces to an integrated power amplifier control (iPAC™)
function, which is insensitive to variations in temperature, power supply, process, and input power.
The ENABLE input allows initial turn-on of PAM circuitry to minimize battery drain. Figure 1.
Functional Block Diagram
3. TECHNICAL BRIEF
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure1. Functional Block Diagram

LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
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SKY77318 PAM Pin Configuration-20-Pin
Leadless (Top View)
Figure 6. Typical Case Makings
Table 4. SKY77328 Pin Names and Signal Descriptions
Pin Mame Description
1BSBand Select
2VCC1A VCC (to GSM 1st stage, DCS/PCS 1st stages, BiCMOS PAC)
3DCS/PCS IN RF input 1710-1910 MHz (DCS1800, PCS1900)
4GND IN RF input 880-915 MHz (GSM)
5GND RF and DC Ground
6VCC1B VCC (to GSM 2nd stage, DCS/PCS 2nd stages)
7GND RF and DC Ground
8GND RF and DC Ground
9GND RF and DC Ground
10 GND RF and DC Ground
11 GSM OUT RF Output 880-915 MHz (GSM)
12 GND RF and DC Ground
13 GND RF and DC Ground
14 GND RF and DC Ground
15 DCS/PCS OUT RF Output 1710-1910 MHz (DCS 1800, PCS1900)
16 GND RF and DC Ground
17 VBATT Battery input to high side of intemal sense resistor
18 ENABLE BiCMOS Enable
19 RSVD(GND) RF and DC Ground
20 VAPC Power Control Bias Voltage
GMD PAD GND Ground Pad, device underside

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3. TECHNICAL BRIEF
3.2 Transceiver (AD6549, U601)
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 com-pact 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 re-ceiver architecture of the OthelloTM family. For Quad band appli-cations the front end
features four fully integrated programmable gain differential LNAs. The RF is then downconverted by quad-rature
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 di-rectly 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. 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 regula-tors (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 2.9V.
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure 2 AD6549 Block Diagram

LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
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Table 1 AD6548/9 Pin Descriptions
No Name Description No Name Description
1VCC_FE Front end supply (IP) 17 VCC_REF Reference Oscillator Supply (IP)
2I I baseband input/output 18 VAFC/ AD6548 Crystal Freq control (IP)
N/C AD6549: Spare Pin
3IBIbaseband input/output 19 REFIN Crystal Connection
4VCC_BBI Baseband I, TX path supply (IP) 20 REFINB Crystal Connection
5SDATA Serial port data 21 REF_OP Reference Frequency Output
6SCLK Serial port clock 22 QB Q baseband input/output
7SEN Serial port enable 23 Q Q baseband input/output
8N/C Not connected 24 VCC_BBQ Baseband Q supply (IP)
9VLDO3 TX LDO Output (1) 25 RX1900B PCS 1900 LNA input
10 TXOP_LO Transmit O/P (850/900MHz) 26 RX1900 PCS 1900 LNA input
11 TXOP_HI Transmit O/P (1800/1900MHz) 27 RX1800B DCS 1800 LNA input
12 VCC_TXVCO TX VCO supply (1) 28 RX1800 DCS 1800 LNA input
13 VDD Serial interface supply 29 RX900B E-GSM LNA input
14 VBAT Battery I/P for LDO reg’s 30 RX900 E-GSM LNA input
15 VLDO1 LDO regulator Output (2) 31 RX850B GSM 850 LNA input
16 VLDO2 LO VCO Supply (3) 32 RX850 GSM 850 LNA input
GOMPLIANT TO JEDEC STANDARDS MO-220-VHHD-2

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3. TECHNICAL BRIEF
3.3 FEM for Triband(FL600)
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Table 3-1 Band SW Logic Table
Figure 3- 2 FEM CIRCUIT DIAGRAM
ANT_SW1 ANT_SW2
GSM_TX High Low
DCS/PCS_TX Low High
GSM_RX Low Low
DCS_RX Low Low
PCS_RX Low Low
R617 100ohm
GND6
19
GND7
20
10
GSM1800_1900_TX
5
GSM1800_RX_OUT1 6
GSM1800_RX_OUT2
GSM1900_RX_OUT1 7
8
GSM1900_RX_OUT2
GSM850_900_TX 12
GSM850_RX_OUT1 1
2
GSM850_RX_OUT2
GSM900_RX_OUT1 3
GSM900_RX_OUT2 4
VC1
14
VC2
15
LSHS-M085FJFL600
17 ANT
GND1
9
GND2
11
13 GND3
GND4
16
18 GND5
C630
39p 39p
C631
100ohmR616
22p
C615
ANT_SW2
ANT_SW1

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3. TECHNICAL BRIEF
3.4 26 MHz Clock (VCTCXO, X600)
The 26 MHz clock(X600) consists of a TCXO(Temperature Compensated Crystal Oscillator) which
oscillates at a frequency of 26 MHz. It is used within the AD6549(U601), base band
processor(AD6720,U101), Midi(U204, YMU792) , BT Module(U702)
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2.2u
C648
C647
1000p
2V75_VVCXO
2GND
3
OUT
VCC 4
VCONT
1
26MHz
TG-5010LH-26M
EXSK0008101
X600
R622
15K
AFC
Figure 3-3. VCTCXO CIRCUIT DIAGRAM

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3. TECHNICAL BRIEF
3.5 Baseband Processor (AD6720 , U101)
• AD6720 is an ADI designed processor
• AD6720 consists of
1. Control Processor Subsystem including:
• 32-bit MCU ARM7TDMI® Control Processor
• 39 MHz operation at 1.8V
• 1Mb of on-chip System SRAM Memory
2. DSP Subsystem including:
• 16-bit Fixed Point DSP Processor
• 91 MIPS[1] at 1.8V
• Data and Program SRAM
• Program Instruction Cache
• Full Rate, Enhanced Full Rate and Half Rate
• Speech Encoding/Decoding
• Capable of Supporting AMR & PDC Speech Algorithms
3. Peripheral Functions
• Parallel and Serial Display Interface
• Keypad Interface
• Flash Memory Interface
• Page-Mode Flash Support
• 1.8V and 3.0V, 64 kbps SIM Interface
• Universal System Connector Interface
• Data Services Interface
• Battery Interface (e.g. Dallas)
4. Other
• Supports 13 MHz and 26 MHz Input Clocks
• 1.8V Typical Core Operating Voltages
• 289-Ball Package (12x12mm), 0.65mm Ball pitch
5. The AD6720 baseband transmit section supports the following mobile station GMSK modulation
power classes:
• GSM 900/850 power classes 4 and 5,
• DCS 1800 power classes 1 and 2, and
• PCS 1900 power classes 1 and 2
LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes