LG GS290 User manual

Service Manual Model : GS290
Internal Use Only
Service Manual
GS290
Date: March, 2010 / Issue 1.0

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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Table Of Contents
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...............................................................11
3. TECHNICAL BRIEF............................................17
3.1 GS290 Functional Block diagram...........................................17
3.2 Baseband Processor (BBP) Introduction..............................18
3.3 Power management IC ..............................................................30
3.4. Power ON/OFF..............................................................................35
3.5. SIM & uSD interface....................................................................37
3.6. Memory...........................................................................................39
3.7. LCD Display....................................................................................40
3.8. Keypad Switching & Scanning...............................................41
3.9. Keypad back-light illumination .............................................42
3.10. LCD back-light illumination..................................................43
3.11. Audio..............................................................................................44
3.13. charging circuit..........................................................................46
3.14 FM radio & BLUETOOTH ..........................................................47
3.15. 5pin u-USB Interface connector..........................................51
3.16. General Description.................................................................54
3.17. Receiver part...............................................................................56
3.18. Transmitter part.........................................................................57
3.19. RF synthesizer.............................................................................58
3.20. Front End Module control .....................................................59
3.21. Power Amplifier Module........................................................60
3.22. PAM Schematic ..........................................................................61
4. TROUBLE SHOOTING ......................................62
4.1 Trouble shooting test setup.....................................................62
4.2 Power on Trouble..........................................................................63
4.3 Charging trouble ..........................................................................66
4.4 LCD display trouble .....................................................................68
4.5 Camera Trouble.............................................................................70
4.6 Receiver & Speaker trouble ......................................................72
4.7 Microphone trouble....................................................................75
4.8 Vibrator trouble.............................................................................77
4.9 Keypad back light trouble.........................................................79
4.10 SIM & uSD trouble......................................................................81
4.11 Touch trouble...............................................................................85
4.12 Trouble shooting of Receiver part.......................................87
4.13 Trouble shooting of Transmitter part.................................93
5. DOWNLOAD & S/W UPGRADE......................101
6. BLOCK DIAGRAM...........................................112
7. CIRCUIT DIAGRAM ........................................113
8. BGA Pin Map..................................................121
9. PCB LAYOUT...................................................129
10.ENGINEERING MODE...................................135
10.1. Test Equipment Setup.......................................................... 135
10.2. Calibration Step...................................................................... 135
11. STAND ALONE TEST ....................................140
11.1 Test Program Setting ............................................................. 140
11.2 Tx Test........................................................................................... 143
11.4 Rx Test.......................................................................................... 145
12. EXPLODED VIEW & REPLACEMENT
PART LIST ....................................................147
12.1 EXPLODED VIEW...................................................................... 147
12.2 Replacement Parts.................................................................. 149

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LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION
GS290 Operational Description Revision B
LG Electronics 7/136 LGE Property
1. Introduction
1.1. Purpose
This manual provides the information necessary to repair, calibration, description and download the features of
the GS290.
1.2. Regulatory Information
1.2.1. 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 you’re 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.
1.2.2. 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.
1.2.3. 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 GS290 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.
1.2.4. Maintenance Limitations
Maintenance limitations on the GS290 must be performed only at the LGE or its authorized agents.
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.

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1.2.5. Notice of Radiated Emissions
The GS290 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.
1.2.6. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly
different.
1.2.7. Interference and Attenuation
An GS290 may interfere with sensitive laboratory equipment, medical equipment, etc. Interference
from unsuppressed engines or electric motors may cause problems.
1.2.8. Electrostatic Sensitive Devices
ATTENTION
Boards, which contains 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 such as EEPROM to the factory,
use the protective package as described.

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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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1. INTRODUCTION
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1.3. ABBREVIATION
For the purposes of this manual, following abbreviations apply:
୛APC Automatic Power Control
୛BB Baseband
୛BER Bit Error Ratio
୛CC-CV Constant Current – Constant Voltage
୛CLA Cigar Lighter Adapter
୛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
୛EGPRS Enhanced General Packet Radio Service
୛EL Electroluminescence
୛ESD Electrostatic Discharge
୛FPCB Flexible Printed Circuit Board
୛GMSK Gaussian Minimum Shift Keying
୛GPIB General Purpose Interface Bus
୛GPRS General Packet Radio Service
୛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
୛LGE LG Electronics
୛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
୛SAW Surface Acoustic Wave

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LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1. INTRODUCTION
GS290 Operational Description Revision B
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1.3. ABBREVIATION
For the purposes of this manual, following abbreviations apply:
୛APC Automatic Power Control
୛BB Baseband
୛BER Bit Error Ratio
୛CC-CV Constant Current – Constant Voltage
୛CLA Cigar Lighter Adapter
୛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
୛EGPRS Enhanced General Packet Radio Service
୛EL Electroluminescence
୛ESD Electrostatic Discharge
୛FPCB Flexible Printed Circuit Board
୛GMSK Gaussian Minimum Shift Keying
୛GPIB General Purpose Interface Bus
୛GPRS General Packet Radio Service
୛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
୛LGE LG Electronics
୛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
୛SAW Surface Acoustic Wave
GS290 Operational Description Revision B
LG Electronics 10/136 LGE Property
୛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
୛DCXO Digitally Controled Crystal Oscillator
୛WAP Wireless Application Protocol
ଝ8PSK 8 Phase Shift Keying

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Copyright © 2010 LG Electronics. Inc. All right reserved.
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LGE Internal Use Only
2. PERFORMANCE
2. PERFORMANCE
GS290 Operational Description Revision B
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2. General Performance
2.1 H/W Feature
Item Feature Comment
Standard Battery Li-ion, 900mAh
AVG TCVR Current 250mA typ @PL5
Standby Current 2.3 mA typ @PP9
Talk time 3 hours (GSM TX Level 7)
Standby time Over 250 hours (Paging Period:9, RSSI: -85dBm)
Charging time Under 3 hours
RX Sensitivity EGSM/GSM850:-105dBm˨,DCS/PCS:-105dBm˨
TX output power EGSM/GSM850 : 33dBm (@PL 5)
DCS/PCS: 30dBm (@PL 0)
GPRS compatibility Class 10
SIM card type 3V Small
Display Main 240 u400 pixels, 3”WQVGA, 262K color
Status Indicator Send Key, Shortcut Key, Volume Up/Down Key,
PWR Key, Camera Key, Lock Key
ANT Built in antenna
EAR Phone Jack 3.5Pi Headset jack
PC Synchronization Yes
Speech coding HR/EFR/FR/AMR
Data and Fax Yes
Vibrator Yes
Buzzer No
Voice Recoding Yes
C-Mic Yes
Receiver Yes
Travel Adapter Yes
Options Bluetooth hands-free kit, Data Kit

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2.2 Technical specification
Item Description Specification
1 Frequency Band
GSM850
TX: 824 + 0.2 x n MHz
RX: 869 + 0.2 x n MHz ( n = 1 ~ 124 )
EGSM
TX: 890 + 0.2 x (n-1024) MHz
RX: 935 + 0.2 x (n-1024) MHz ( n = 975 ~ 1023 )
DCS1800
TX: 1710 + ( n-511 ) u0.2 MHz (n = 512 a885)
RX: TX + 95 MHz
PCS1900
2 Phase Error RMS < 5 degrees
Peak < 20 degrees
3 Frequency Error < 0.1ppm
GSM850/EGSM
Level Power Toler. Level Power Toler.
5 33 dBm ±2dB 13 17 dBm ±3dB
6 31 dBm ±3dB 14 15 dBm ±3dB
7 29 dBm ±3dB 15 13 dBm ±3dB
8 27 dBm ±3dB 16 11 dBm ±5dB
9 25 dBm ±3dB 17 9 dBm ±5dB
10 23 dBm ±3dB 18 7 dBm ±5dB
11 21 dBm ±3dB 19 5 dBm ±5dB
12 19 dBm ±3dB
DCS1800/PCS1900
Level Power Toler. Level Power Toler.
0 30 dBm ±2dB 8 14 dBm ±3dB
1 28 dBm ±3dB 9 12 dBm ±4dB
2 26 dBm ±3dB 10 10 dBm ±4dB
3 24 dBm ±3dB 11 8 dBm ±4dB
4 22 dBm ±3dB 12 6 dBm ±4dB
5 20 dBm ±3dB 13 4 dBm ±4dB
6 18 dBm ±3dB 14 2 dBm ±5dB
4 Power Level
7 16 dBm ±3dB 15 0 dBm ±5dB

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2. PERFORMANCE
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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
6,000 -71
DCS1800/PCS1900
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
5 Output RF Spectrum
(due to modulation)
6,000 -73
GSM850/EGSM
Offset from Carrier (kHz) Max. (dBm)
400 -19
600 -21
1,200 -21
1,800 -24
DCS1800/PCS1900
Offset from Carrier (kHz) Max. (dBm)
400 -22
600 -24
1,200 -24
6
Output RF Spectrum
(due to switching
transient)
1,800 -27

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2. PERFORMANCE
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7 Spurious Emissions Conduction, Emission Status
Conduction, Emission Status
8 Bit Error Ratio
GSM850 / EGSM
BER (Class II) < 2.439% @-102dBm
DCS1800/PCS1900
BER (Class II) < 2.439% @-100dBm
9 Rx Level Report
accuracy r3 dB
10 SLR 8 r3 dB
Frequency (Hz) Max.(dB) Min.(dB)
100 -12 /
200 0 /
300 0 -12
1,000 0 -6
2,000 4 -6
3,000 4 -6
3,400 4 -9
11 Sending Response
4,000 0 /
12 RLR 2 r3 dB
Frequency (Hz) Max.(dB) Min.(dB)
100 -12 /
200 0 /
300 2 -7
500 * -5
1,000 0 -5
3,000 2 -5
3,400 2 -10
4,000 2
13 Receiving Response
* Mean that Adopt a straight line in between 300 Hz and 1,000 Hz to be
Max. level in the range.
14 STMR 13 r5 dB
15 Stability Margin > 6 dB

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dB to ARL (dB) Level Ratio (dB)
-35 17.5
-30 22.5
-20 30.7
-10 33.3
0 33.7
7 31.7
16 Distortion
10 25.5
17 Side tone Distortion Three stage distortion < 10%
18
<Change> System
frequency (26 MHz)
tolerance
d2.5 ppm
19 <Change>32.768KHz
tolerance d30ppm
20 Power consumption Standby
- Normalஆd3 mA(@PP9)
21 Talk Time
EGSM/Lvl 7 (Battery Capacity 800mA):180 min
EGSM/Lvl12(Battery Capacity 800 mA):320min
22 Standby Time
Under conditions, at least 300 hours:
1. Brand new and full 900mAh battery
2. Full charge, no receive/send and keep GSM in idle mode.
3. Broadcast set off.
4. Signal strength display set at 3 level above.
5. Backlight of phone set off.
23 Ringer Volume
At least 65 dB under below conditions:
1. Ringer set as ringer.
2. Test distance set as 50 cm
24 Charge Current
Fast Charge : < 650 mA
Slow Charge: < 120 mA

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2. PERFORMANCE
GS290 Operational Description Revision B
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Antenna Bar Number Power
7 >-92 dBm a
5 -97dBm a–93dBm
4 -100dBm a
–98dBm
2 -103dBm a
–101dBm
1 -105dBm a
–104dBm
0 < –106 dBm
25 Antenna Display
Off No Service
Battery Bar Number Voltage (±0.05V)
3 3.72V~4.2V
2 3.65V~3.71V
1 3.59V~3.64V
26 Battery Indicator
0 3.35V~3.58V
3.59VĻ±0.05V (Call)
27 Low Voltage Warning 3.59VĻ±0.05V (Standby)
28 Forced shut down
Voltage 3.35 r0.05 V
29 Battery Type
Li-ion Battery
Standard Voltage = 3.7 V
Battery full charge voltage = 4.2 V
Capacity: 900mAh
30 Travel Charger
Switching-mode charger
Input: 150 a240 V, 50/60Hz
Out put: 5.1, 0.7A

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* EDGE RF Specification (Option: is not serviced for ”EDGE mode”)
Item Description Specification
1 RMS EVM ≤9%
2 Peak EVM ≤30%
3 95
th
Percentile EVM ≤15%
4 Origin Offset Suppression ≥30dB
GSM900/EGSM
Level Power Toler. Level Power Toler.
5 27dBm ±3dB 13 17dBm ±3dB
6 27dBm ±3dB 14 15dBm ±3dB
7 27dBm ±3dB 15 13dBm ±3dB
8 27dBm ±3dB 16 11dBm ±5dB
9 25dBm ±3dB 17 9dBm ±5dB
10 23dBm ±3dB 18 7dBm ±5dB
11 21dBm ±3dB 19 5dBm ±5dB
12 19dBm ±3dB
DCS1800, PCS1900
Level Power Toler. Level Power Toler.
0 26/25dBm ±3dB 8 14dBm ±3dB
1 26/25dBm ±3dB 9 12dBm ±4dB
2 26/25dBm ±3dB 10 10dBm ±4dB
3 24dBm ±3dB 11 8dBm ±4dB
4 22dBm ±3dB 12 6dBm ±4dB
5 20dBm ±3dB 13 4dBm ±4dB
6 18dBm ±3dB 14 2dBm ±5dB
5 Power Level
7 16dBm ±3dB 15 0dBm ±5dB
GSM900/EGSM
Offset from carrier(kHz) Max. dBc
100 +0.5
200 -30
250 -33
400 -54
600~<1,200 -60
1,200~<1,800 -60
1,800~<3,000 -63
3,000~<6,000 -65
6 Output RF Spectrum
(due to modulation)
6,000 -71

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DCS1800, PCS1900
Offset from carrier(kHz) Max. dBc
100 +0.5
200 -30
250 -33
400 -54
600~<1,200 -60
1,200~<1,800 -60
1,800~<3,000 -63
3,000~<6,000 -65
6,000 -71
GSM900/EGSM
Offset from carrier(kHz) Max. dBm
400 -23
600 -26
1,200 -27
1,800 -30
DCS1800, PCS1900
Offset from carrier(kHz) Max. dBm
400 -23
600 -26
1,200 -27
7 Output RF Spectrum
(due to switching transient)
1,800 -30
6

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Copyright © 2010 LG Electronics. Inc. All right reserved.
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3. TECHNICAL BRIEF
3. TECHNICAL BRIEF
GS290 Operational Description Revision B
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3. Technical brief
3.1. GS290 Functional Block diagram.
The functional component arrangement is mentioned below diagram.
Figure 1 GS290 Functional block diagram

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3. TECHNICAL BRIEF
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3.2. Baseband Processor (BBP) Introduction
Figure 2 Top level block diagram of the S-GOLD3TM (PMB8877)
CONFIDENTIAL
S-GOLD3 Baseband IC
PMB 8877
S-GOLD3 Overview
S-GOLD3 Product Specification 7 Version 3.0, 2005-05-31
2 S-GOLD3 Overview
2.1 Introduction
S-GOLD3TM is a GSM/EDGE single chip mixed signal baseband IC containing all analog and digital functionality
of a cellular radio. Additionally S-GOLD3TM provides multimedia extensions to enable today’s and future feature
phone applications. It is designed as a single chip solution, integrating the digital and mixed signal portions of the
base band in a 1.35V 90nm CMOS technology to meet the ever increasing demands of the GSM/EDGE cellular
subscriber market for feature rich and high performance terminals at low costs.
The Infineon Technologies’ DSP firmware and software modules for FR, HR, EFR and AMR-NB vocoding and
channel encoding allow short time to market. Additionally, the S-GOLD3TM supports multislot operation modes
HSCSD (up to class 10), GPRS for high speed data applications (up to class 12) and EGPRS (up to class 12)
without additional external hardware.
The processing within S-GOLD3TM is handled by an ARM926EJ-S CPU and a TEAKLite® DSP core.
The ARM926EJ-S is a powerful standard controller and particularly suited for wireless systems. It is supported by
a wide range of tools and application SW.
The TEAKLite® is an established DSP core for wireless applications with approved firmware for GSM/EDGE
signal processing.
2.2 Example of Infineon S-GOLD3
TM
Quad-Band E-GPRS Solution
Figure 2-1 E-GPRS Solution
In combination with Infineon Technologies’ SMARTi familiy RF ICs and an S/M-Power battery and power
management IC a complete 3 chip system solution is achieved, which results in extremely compact
implementation, very low power consumption and cost effective system performance.
A wide choice of communication interfaces allows complex data and multimedia system designs. Due to its flexible
interfaces S-GOLD3TM can be set up easily to control a wide variety of RF architectures.
SMARTiPM
PMB 6272
(ED GE GSM/GPRS R F Tra n sceive r)
TEAKLite®
GEA-1/2/3
SRAM
USB FS
OTG
DMA C
GPIOs
USIM
GPTU
RTC
Equalizer
Acc.
I²S / DAI
GSM
Timer
Keypad AFC
CAPCOM
IC U
SPCU
AUX
ADC
SRC
MEM
CTRL
SDIO IF
I²C
CGU
Display
IF
Camera
IF FCDP
Multimedia IC IF
ARM® 926 EJ-S
MOVE CoPro
Fast
IrDA
USIFs
Crypto
box
TSMU
I²S
Sys
Timer
1 Wire
Engine
2D
MMC IF
Channel
Decoder
BB Receiver
Modulator
8 PSK/GMSK
JTAG
CerberusABW
S-GOLD3
PMB 8877
IR-Memory DAC
ADC
Audio FE DAC
DSP
Timer
DSP
ICU
DSP
ICU
ADC
I/Q
DAC
Ph/
Amp
SD
PLL
IF
ADC
3 WI R E
IF
RF
Control IF
GSM
Cipher Unit
3-wire-bus
Analog
Audio In
Analog
Audio Out
SDs
SM-Power3
PMB 6821
USB
AUDIO
AMPLIFIER
BACKLIGHT
I²C
DIGITAL
CONTROL CHARGER
DIG. R ESET
& SLEEP
CONTROL
VRFsVAU D IOs
VMMCVUSB
VSIMVRTC
VVIBVAU X
VAFC
SU
VIOVPLL
REFEREN C E
PA
FEM
DC XO
Core supply (0.95V,1.37V)
Analog Supply(2.5V)
VRTC, VPLL,IO Supply
1.8V,2.5V
LD Os
FLA SH
LIGHT
SD R or D DR
SD-R A M
/ C-R A M
N OR / N A N D
FLA SH
1 32
465
7 98
* #0
SIM
MMC
GS290 Operational Description Revision B
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3.2. Baseband Processor (BBP) Introduction
Figure 2 Top level block diagram of the S-GOLD3TM (PMB8877)

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3.2.1. General Description
S-GOLD3TM is a GSM/EDGE single chip mixed signal Baseband IC containing all analog and digital functionality
of a cellular radio. Additionally S-GOLD3TM 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 fully support the FR, EFR, HR and AMR-NB vocoding.
S-GOLD3TM support multi-slot operation modes HSCSD (up to class 10), GPRS for high speed data application
(up to class 12) and EGPRS (up to class 12) without additional external hardware.
3.2.2. Block Description
zProcessing 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
zARM-Memory
- 32k Byte Boot ROM on the AHB
- 96k Byte SRAM on the AHB, flexibly usable as program or data RAM
- 16k Byte Cache for Program (internal)
- 8k Byte tightly coupled memory for Program(internal)
- 8k Byte Cache for Data(internal)
- 8k Byte tightly coupled memory for Data(internal)
zDSP-Memory
- 104K x 16bit Program ROM
- 8k x 16bit Program RAM
- 60k x 16bit Data ROM
- 37k x 16bit Data RAM
- Incremental Redundancy(IR) Memory of 35904 words of 16bit
zShared Memory Block
1.5K x 32bit Shared RAM(dual ported) between controller system and TEAKLite.
zController 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 the internal and
external memories and with the peripheral buses.

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Only for training and service purposes
3. TECHNICAL BRIEF
GS290 Operational Description Revision B
LG Electronics 22/136 LGE Property
zClock system
The clock system allows widely independent selection of frequencies for the essential parts of the S-GOLD3.
Thus power consumption and performance can be optimized for each application.
zFunctional 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)
- Pulse Number Modulation output for Automatic Frequency Correction(AFC)
- Serial RF Control interface: support of direct conversion RF
- A Universal Serial Interface(USIF) enabling asynchronous (UART) of synchronous (SPI)
serial data transmission
- 3 USIF with autobaud detection, hardware flow control and integrated
- A dedicated Fas IfDA Controller supporting IrDA’s SIR,MIR and FIR standards
(up to 4Mbps)
- I2C-bus interface (e.g. connection to S/M power)
- A fast display interface supporting serial and parallel interconnection
- An ITU-R BT.656 compatible Camera interface.
- Programmable clock output for a camera
- An multimedia/Secure Digital Card Interface (MMCI/SD:SDIO capable)

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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
GS290 Operational Description Revision B
LG Electronics 23/136 LGE Property
3.2.3. External Devices connected to memory interface
Table 1. Memory interface
Device Name Maker Remark
FLASH K522H1HACB-B060 SAMSUNG Synchronous / A synchronous
DDR K522H1HACB-B060 SAMSUNG Synchronous 166MHz
LCD IM300IBN1A LGIT 8bit access 2 times transmission
Melody IC Not Used S/W Infineon Software CODEC
3.2.4. RF Interface (T_OUT)
S-Gold3 uses this interface to control RF IC and Peripherals. 13 signals are provided switch on/off RF ICs
Periodically each TDMA frame.
Table 2. RF Interface Spec.
T_OUT
Resource Interconnection Description
T_OUT0 TXON_PA PAM Power on
T_OUT1 N/A N/A
T_OUT2 PA_BAND TX RF band select
T_OUT3 N/A N/A
T_OUT4 N/A N/A
T_OUT5 Other function -
T_OUT6 PA MODE PAM Mode select
3.2.5. USIF Interface
GS290 have three USIF Drivers as follow :
- USIF1 : Hardware Flow Control / SW upgrade / Calibration
- USIF2 : Not used Rx, Tx and CTS, RTS use BT Interface
- USIF3 : BT Interface