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LGE Internal Use Only Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Table Of Contents
1. INTRODUCTION ..................................................................3
1.1 Purpose ............................................................................................... 3
1.2 Regulatory Information ............................................................... 3
1.3 Abbreviations ................................................................................... 5
2. PERFORMANCE ...................................................................7
2.1 H/W Features .................................................................................... 7
2.2 Technical Specification ................................................................. 8
3. TECHNICAL BRIEF .............................................................15
3.1 GT350f Functional Block diagram .........................................15
3.2 Baseband Processor (BBP) Introduction..............................16
3.3 Power management IC ..............................................................28
3.4. Power ON/OFF ..............................................................................34
3.5. SIM & uSD interface ....................................................................35
3.6. Memory ...........................................................................................37
3.7. LCD Display ....................................................................................38
3.8. Keypad Switching & Scanning ...............................................39
3.9. Keypad back-light illumination .............................................40
3.10. LCD back-light illumination ..................................................42
3.11. Audio ..............................................................................................43
4.5 Camera Trouble .............................................................................71
4.6 Receiver & Speaker trouble ......................................................73
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 ................................................................... 102
6. BLOCK DIAGRAM ........................................................... 115
7. CIRCUIT DIAGRAM ........................................................ 116
8. BGA PIN MAP ................................................................
9. PCB LAYOUT ................................................................... 128
10.ENGINEERING MODE ................................................... 134
10.1. Test Equipment Setup ..........................................................134
10.2. Calibration Step ...................................................................... 134
125
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 .....................................................................69
11. STAND ALONE TEST .................................................... 139
11.1 Test Program Setting ............................................................. 139
11.2 Tx Test ........................................................................................... 142
11.4 Rx Test .......................................................................................... 144
12. EXPLODED VIEW & REPLACEMENT PART LIST
12.1 EXPLODED VIEW ...................................................................... 146
12.2 Replacement Parts.................................................................. 147
12.3 Accessory ................................................................................... 170
......... 146
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1. INTRODUCTION
I. Introduction
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the features
of the GT350.
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 GT350 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 GT350 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.
1.2.5. Notice of Radiated Emissions
The GT350 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. INTRODUCTION
GT350f.
GT350f
GT350f
GT350f
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LGE Internal Use Only Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1. INTRODUCTION
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.
GT350f
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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- 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
1. INTRODUCTION
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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
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
8PSK 8 Phase Shift Keying
1. INTRODUCTION
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2. PERFORMANCE
II. General Performance
2.1 H/W Feature
Item Feature Comment
Standard Battery Li-ion polymer, 950mAh
AVG TCVR Current 250mA typ @PL5
Standby Current 2.0 mA typ @PP9
Talk time 4 hours (GSM TX Level 7)
Standby time Over 450 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 (Plug in type)
Display
Main 240 u 400 pixels, 3” WQVGA, 262K TFT
Status Indicator
Send Key, End key, Shortcut Key, Volume
Up/Down Key, PWR Key, Camera 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
2. PERFORMANCE
3V (Plug in type)
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2. PERFORMANCE
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 ) u 0.2 MHz (n = 512 a 885)
RX: TX + 95 MHz
PCS1900
TX: 1850.2 + ( n-512 ) u 0.2 MHz (n = 512 a 810)
RX: TX + 80MHz
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
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
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
r 3 dB
10 SLR
8 r 3 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 r 3 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 r 5 dB
15 Stability Margin > 6 dB
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
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17
Side tone Distortion Three stage distortion < 10%
18
<Change> System frequency (26 MHz)
tolerance
d 2.5 ppm
19
<Change>32.768KHz tolerance
d 30ppm
20
Power consumption
Standby
- Normalஆd 2 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 950mAh 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
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 3.76V~4.2V
2 3.68V~3.75V
1 3.62V~3.67V
26 Battery Indicator
0 3.36V~3.61V
3.61VĻ±0.05V (Call)
27 Low Voltage Warning
3.61VĻ±0.05V (Standby)
28 Forced shut down Voltage
3.35 r 0.05 V
2. PERFORMANCE
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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 95th 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
6,000 -71
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
Output RF Spectrum
(due to modulation)
6,000 -71
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2. PERFORMANCE
Only for training and service purposes
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3. TECHNICAL BRIEF
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-GOLD3
TM
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
z 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
z ARM-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)
z DSP-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
z Shared Memory Block
1.5K x 32bit Shared RAM(dual ported) between controller system and TEAKLite.
z 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 the internal
and external memories and with the peripheral buses.
z Clock 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.
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3. TECHNICAL BRIEF
z 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)
- 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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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 IM300IBN4A 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
T_OUT2 PA_BAND TX RF band select
T_OUT3
T_OUT4 BT_WAKEUP BT wake up
T_OUT5 VIB_PWM Motor control
T_OUT6 PA MODE PAM Mode select
3.2.5 USIF Interface
GT350 have three USIF Drivers as follow :
- USIF1 : Hardware Flow Control / SW upgrade / Calibration
- USIF2 : Not used Rx, CTS & RTS use BT Interface
- USIF3 : WLAN Data
Table 3. USIF Interface Spec.
Resource Name Remark
USIF1
USIF1_TXD TXD Transmit Data
USIF1_RXD RXD Receive Data
USIF1_CTS USB_DM USB
USIF1_RTS USB_DP USB
USIF2
USIF2_TXD VIB_EN Motor control
USIF2_RXD Other function USIF2_CTS BT_CTS BT
USIF2_RTS BT_RTS. BT
USIF3
USIF3_TXD WLAN_D[1] WLAN Data
USIF3_RXD WLAN_D[2] WLAN Data
3. TECHNICAL BRIEF
GT350f
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3.2.7 GPIO map
Over a hundred allowable resources, GT350 is using as follows except dedicated to SIM and Memory.
GPIO(General Purpose Input/Output) Map, describing application is shown in below table
Table 5 S-Gold3 GPIO pin Map
Port function Net name Description
#Keypad
G G
KP_IN0
G
G
KP_IN1
G
G
KP_IN2
IF_MODE0
LCD Interface mode 0
KP_IN3
G
G
KP_IN4
G G
KP_IN5
G
KP_IN6
KEY_INT Key coder IC interrupt
KP_OUT0
JACK_DETECT
Ear-mic jack detect
KP_OUT1
G
G
KP_OUT2
KEY_I2C_SCL
Key coder IC’s I2C clock
KP_OUT3
KEY_I2C_SDA
Key coder IC’s I2C data
#USIF1: Universal
Serial IF
#USB
G G
USIF1_RXD_MRST
UART_RX
UART, RS232 Data
USIF1_TXD_MTSR
UART_TX
UART, RS232 Data
USIF1_RTS_N
USB_DAT_VP
USB Data
USIF1_CTS_N
USB_SE0_VM
USB Data
#USIF2: Universal
Serial IF
G G
USIF2_RXD_MRST
G
G
USIF2_TXD_MTSR
VIB_EN
Moter enable
USIF2_RTS_N
UART_BT_RTS
Bluetooth RTS
USIF2_CTS_N
UART_BT_CTS
Bluetooth CTS
#USIF3: Universal
Serial IF
G G
USIF3_RXD_MRST
G
USIF3_TXD_MTSR
G
USIF3_SCLK
G
#MMCI2: Intrachip
G G
MMCI2_CMD
G
MMCI2_DAT[0]
G
MMCI2_CLK
G
#CIF: Camera Interface G G
CIF_D0
CIF_D0
Camera DATA[0]
CIF_D1
CIF_D1
Camera DATA[1]
CIF_D2
CIF_D2
Camera DATA[2]
GT350f
3. TECHNICAL BRIEF
LGE Internal Use Only Copyright © 2011 LG Electronics. Inc. All right reserved.
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Only for training and service purposes
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3. TECHNICAL BRIEF
SWIF_TXRX
G G
#MMCI1:
Card Connector
G G
MMCI1_CMD
MMC_CMD T-flash command
MMCI1_DAT[0]
MMC_D[0] T-flash data[0]
MMCI1_CLK
MMC_CLK T-flash clock
#MMCI1:
SD-Extension
G G
MMCI1_DAT[1]
MMC_D[1] T-flash data[1]
MMCI1_DAT[2]
MMC_D[2] T-flash data[2]
MMCI1_DAT[3]
MMC_D[3] T-flash data[3]
#I2S1
G G
I2S1_CLK0
I2S1_CLK For Bluetooth
I2S1_CLK1
_MMC_DET T-flash detect
I2S1_RX
I2S1_RX For Bluetooth
I2S1_TX
I2S1_TX For Bluetooth
I2S1_WA0
I2S1_WA0 For Bluetooth
#I2S2
G G
I2S2_CLK0
_CHG_EOC End of charge from charging IC
I2S2_CLK1
UART_BT_RX For Bluetooth
I2S2_RX
_PPR Power good output from charging IC
I2S2_TX
KEY_EN For PMIC
I2S2_WA0
SLIDE_OPEN Slide open/close detect
I2S2_WA1
UART_BT_TX For Bluetooth
#Voiceband: Analog
Interface
G G
EPN1
RCV_N
For Receiver
EPP1
RCV_P
For Receiver
EPPA1
BB_SND_L For Speaker
EPREF
G G
EPPA2
BB_SND_R For Speaker
MICN1
MAIN_MIC_N
For Main Mic
MICP1
MAIN_MIC_P
For Main Mic
MICN2
HS_MIC_N
For Headset Mic
MICP2
HS_MIC_P
For Headset Mic
AUXN1
G G
AUXP1
G G
AUXN2
G
G
AUXP2
G G
AUXGND
G G
VMICP
VMIC_P
Power for MIC
VMICN
VMIC_N
Power for MIC
#I/Q-Signale: Analog
Interface, Baseband
G G
PAOUT1
PA_LEVEL G
BB_I
I G
BB_IX
IX G
LGE Internal Use Only Copyright © 2011 LG Electronics. Inc. All right reserved.
- 23 -
Only for training and service purposes
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LGE Internal Use Only Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
3.3 Power management IC
3.3.1 General Description
SM-POWER is a highly integrated Power and Battery Management IC for mobile handsets. It has been
specially designed for usage with S-Gold3. Although optimized for usage with the Infineon S-GOLD
baseband device it is suitable for the S-GOLDlite and the E-GOLD+ baseband devices as well. It also supports
the cellular RF devices like SMARTi-DC, SMARTi-DC+, SMARTi-SD and the Bluemoon Single, Infineon’s single
chip solution for Bluetooth. If used with S-GOLD3 it provides all power supply functions (except for the RF PA)
for a complete advanced GSM Edge smart phone minimizing external device count.
Block Description
• Highly efficient step-down converter for main digital baseband supply including Core, DSP and
memory interface (External Bus Unit).
• Support of S-GOLD standby power-down concept
• Low-drop-out (LDO) regulators for Flash and mobile RAM memory devices
• Voltage independent switching of two SIM cards
• LDO regulators for baseband I/O supply
• LDO regulator for analog mixed-signal section of S-GOLD
• Low-noise LDO regulators for RF devices
• Supply for Bluemoon Single, Infineon’s single chip solution for Bluetooth
• Audio amplifier 8 Ohms for handsfree operation and ringing
• Charge Control for charging Li-Ion/Polymer batteries under software control
• Pre-charge current generator with selectable current level
• RTC regulator with ultra-low quiescent current
• USB interface support for peripheral and mini-host mode
• Backlight LEDs driver with current selection and PWM dimming function
• Two single LED driver outputs for signaling
• Vibrator driver with adjustable voltage
• Fully controlable by software via I2C – Bus
• Temperature and battery voltage sensors
• Interrupt channels for peripherals
• System debug mode
• VQFN 48 package with heat sink and non-protruding leads
• Compatible with the Infineon E-GOLD+ V2 and V3
SM-POWER is a further step on the successful E-Power product line with enhanced and optimized
functionality.
SM-POWER features a baseband supply concept with a DC/DC step-down converter cascaded by two linear
regulators
–SM-POWER’s DC/DC converter makes up to 40 % reduction of battery current for smart phone functions
(e.g. organizer functions, games, MP3 decoding) possible.
– SDBB has high efficiency up to 95% and also a power save mode.
– Memory Interface is directly supported by the SDBB
– SDBB can also act as main supply voltage for E-GOLD+ or S-GOLDlite baseband devices.
– For S-GOLD two linear regulators for DSP and Core are cascaded after the SDBB.
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3. TECHNICAL BRIEF
SM-POWER supports the standby power-down concept of S-GOLD by temporarily switching off the linear
regulator for the DSP during mobile standby whenever this subsystem is not used. In this phase the ARM
controller and most peripherals including parts of the on-chip SRAM are kept powered-up with power being
supplied by the other linear regulator.
SM-POWER includes a fully differential audio amplifier able to drive loads down to a nominal value of 8 Ohm
for usage in hands-free phones and for ringing
– 450 mW maximum output power
– adjustable gain
– mute switch SM-POWER also integrates a charging function for Li-Ion, Li-Polymer batteries
– click and pop -protection SM-POWER also integrates a charging function for Li-Ion, Li-Polymer batteries
– Precharge current source with two current levels
– Constant current / constant voltage charging with 3 different termination voltages
– Programable charge current limitation for use with different batteries
– Freely programable pulse charging to reduce the thermal power dissipation in the constant voltage charging
phase
– Top-off charge current sensing SM-POWER completes the USB interface of S-GOLD
– Regulated voltage for S-GOLD USB interface including reverse current and overvoltage protection
– Switch to supply USB pull-up resistor
– Mini-host pull down resistor functionality
– Charge pump with internal switching capacitor for USB host VBUS supply voltage SM-POWER fully supports LED
and Vibra Motor functionality
– no external components needed
– driver for backlight LEDs adjustable in steps up to 140mA and with soft turn on and off by PWM dimming
– two driver outputs for single LEDs for precharge indication and signaling with i.e. change of colour
–driver for Vibra Motor with adjustable voltages, soft startup / shutdown and current limitation
SM-POWER offers several control functions
– Power-on Reset Generator with logic state machine
– I2C bus interface
– I2C bus configurable mode control logic with ON (push-button or RTC), VCXOEN and LRF3EN (wake-up by
Bluetooth) inputs
– Programable interrupt channels to handle peripherals like SIM, MMC and USB
– Monitoring of charging functions
– Undervoltage Shut-Down
– Errorflags (volatile or non-volatile) from many power-supply functions and thermal sensor in order to debug
system
– Overtemperature Shut-Down
– Overtemperature Warning
– Support of S-GOLD standby power-down concept
– Support of S-GOLD Power-Down Pad Tristate Function
LGE Internal Use Only Copyright © 2011 LG Electronics. Inc. All right reserved.
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Only for training and service purposes
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LGE Internal Use Only Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
Table 6. LDO Output Table of SM-Power
LDO Net name Output Voltage Output Current Usage
SD1 1V35_VCORE 1.35V 600mA Core & for LDO
SD2 1V8_VSD 1.8V 300mA Memory
VAUX 2V9_VAUX 2.9V 100mA Linear motor driver
VIO 2V62_VIO 2.62V 100mA Peripherals
VSIM 2V9_VSIM 2.9V 70mA SIM card
VMME 2V9_VMME 2.9V 150mA u-SD
VUMTS 2V85_VCAMIO 2.85V 110mA Camera IO
VUSB 3V1_VUSB 3.1V 40mA VUSB
VLED - 2.9V 10mA Not used
VAUDIOa 2V5_VAUDA 2.5V 200mA Analog parts of S-Gold
VAUDIOb 2V5_VAUDB 2.5V 50mA
Analog parts of S-Gold
Headset MIC
VRF1 2V85_VRF 2.85V 150mA
2.85 V supply for SMARTi-PM
RF transceiver
VRF2 1V53_VRF 1.53V 100mA
1.5 V supply for SMARTi-PM
RF transceiver
VRF3 2V7_VBT 2.7V 150mA BT/FM Radio
VPLL 1V35_VPLL 1.35V 30mA S-GOLD3 PLL
VRTC 2V0_VRTC 2.11V 4mA Real Time Clock
VAFC 2V65_VTOUCH 2.65V 5mA Touch
VVIB 2V8_VCAM_A 2.8V 140mA Camera analog