LG GD88O User manual
Service Manual Model : GD880
Internal Use Only
Service Manual
GD880
Date: March, 2010 / Issue 1.0
- 3 -
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 Product Name.................................................................................. 9
2.2 Supporting Standard.................................................................... 9
2.3 Main Parts : GSM Solution........................................................... 9
2.4HW Features.....................................................................................10
2.5SW Features .....................................................................................12
2.6 HW SPEC...........................................................................................14
2.7 GD880 Figures ...............................................................................20
3. TECHNICAL BRIEF............................................21
3.1 Digital Baseband(DBB/MSM7227).........................................21
3.2 Hardware Architecture ..............................................................22
3.3 Sub system(MSM7227)...............................................................25
3.4 Power Block.....................................................................................34
3.5 External memory interface.......................................................39
3.6 H/W Sub system............................................................................41
3.7 Audio and sound..........................................................................52
3.8 Camera / LCD..................................................................................58
3.9 Proximity Sensor...........................................................................65
3.10 Luminance Sensor.....................................................................66
3.11 Motion Sensor.............................................................................67
3.12 Vibrators.........................................................................................68
3.13 GSM MODE...................................................................................70
3.14 UMTS MODE.................................................................................72
3.15 GPS RECEIVER ..............................................................................75
3.16 LO GENERATION and DISTRIBUTION CIRCUIT ................75
3.17 OFF-CHIP RF COMPONENTS..................................................76
3.18 LG GD880 Main Features.........................................................80
3.19 GD880 Main Component .......................................................81
4. TROUBLE SHOOTING ......................................86
4.1 RF Component...............................................................................86
4.2 Signal Path.......................................................................................88
4.3 Checking TCXO Block..................................................................92
4.4 Checking FEM Block....................................................................93
4.5 Checking WCDMA Block............................................................96
4.6 Checking GSM Block ................................................................106
4.7 GPS/WIFI/BT/FM Radio RF components .......................... 113
4.8 GPS/WIFI/BT/FM Radio SIGNAL PATH................................ 115
4.9 GPS/WIFI/BT/FM Radio TROUBLE SHOOTING................ 116
4.10 Power ON Troubleshooting ................................................ 122
4.11 Charger Troubleshooting .................................................... 126
4.12 USB trouble................................................................................ 130
4.13 Audio trouble ........................................................................... 133
4. 14 5M Camera trouble ............................................................... 145
4. 15 VGA Camera trouble............................................................. 148
4. 16 Main LCD trouble................................................................... 150
4.17 SIM Detect Troubleshooting .............................................. 153
4.18 Side Key Troubleshooting.................................................... 155
4.19 LINEAR MOTOR ........................................................................ 157
4.20 Proximity Sensor on/off trouble ....................................... 158
4.21 Luminance Sensor on/off trouble.................................... 160
4.22 Motion Sensor on/off trouble............................................ 162
5. DOWNLOAD...................................................164
6. BLOCK DIAGRAM...........................................177
7. CIRCUIT DIAGRAM ........................................185
8. BGA PIN MAP .................................................195
9. PCB LAYOUT...................................................201
10. RF CALIBRATION .........................................205
10.1 Introduction.............................................................................. 206
10.2 Terminology .............................................................................. 206
10.3 Tachyon Main UI ...................................................................... 206
11. EXPLODED VIEW & REPLACEMENT
PART LIST ....................................................215
11.1 EXPLODED VIEW...................................................................... 215
11.2 Replacement Parts.................................................................. 219
11.3 Accessory ................................................................................... 244
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LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 5 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION
ʹΠΡΪΣΚΘΙΥι ͽͶΝΖΔΥΣΠΟΚΔΤͺΟΔͲΝΝΣΚΘΙΥΣΖΤΖΣΧΖΕ
ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ 4/140
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
1. INTRODUCTION
- 6 -
LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1. INTRODUCTION
ʹΠΡΪΣΚΘΙΥι ͽͶΝΖΔΥΣΠΟΚΔΤͺΟΔͲΝΝΣΚΘΙΥΣΖΤΖΣΧΖΕ
ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ 5/140
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.
2. INTRODUCTION
- 7 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
ʹΠΡΪΣΚΘΙΥι ͽͶΝΖΔΥΣΠΟΚΔΤͺΟΔͲΝΝΣΚΘΙΥΣΖΤΖΣΧΖΕ
ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ 6/140
1.3 Abbreviations
For the purposes of this manual, following abbreviations apply:
Offset Phase Locked LoopOPLL
Light Emitting DiodeLED
Low Drop OutputLDO
Liquid Crystal DisplayLCD
Intermediate FrequencyIF
International Portable User IdentityIPUI
Global System for Mobile CommunicationsGSM
General Purpose Interface BusGPIB
Gaussian Minimum Shift KeyingGMSK
Flexible Printed Circuit BoardFPCB
Electrostatic DischargeESD
Electrical Erasable Programmable Read-Only MemoryEEPROM
Digital Signal ProcessingDSP
dB relative to 1 milli wattdBm
Digital Communication SystemDCS
Digital to Analog ConverterDAC
Constant Current – Constant VoltageCC-CV
Bit Error RatioBER
BasebandBB
Automatic Power ControlAPC
1. INTRODUCTION
- 8 -
LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1. INTRODUCTION
ʹΠΡΪΣΚΘΙΥι ͽͶΝΖΔΥΣΠΟΚΔΤͺΟΔͲΝΝΣΚΘΙΥΣΖΤΖΣΧΖΕ
ΟΝΪΗΠΣΥΣΒΚΟΚΟΘΒΟΕΤΖΣΧΚΔΖΡΦΣΡΠΤΖΤ
ͽͶͺΟΥΖΣΟΒΝΆΤΖΟΝΪ 7/140
Wireless Application Protocol
WAP
Voltage Control Temperature Compensated Crystal OscillatorVCTCXO
Voltage Controlled OscillatorVCO
Universal Asynchronous Receiver/TransmitterUART
Time Division Multiple AccessTDMA
Time Division DuplexTDD
Travel AdapterTA
Side Tone Masking RatingSTMR
Pseudo SRAMPSRAM
Static Random Access MemorySRAM
Sending Loudness RatingSLR
Subscriber Identity ModuleSIM
Surface Acoustic WaveSAW
Real Time ClockRTC
Root Mean SquareRMS
Receiving Loudness RatingRLR
Radio FrequencyRF
Public Switched Telephone NetworkPSTN
Phase Locked LoopPLL
Programmable Gain AmplifierPGA
Printed Circuit BoardPCB
Power Amplifier ModulePAM
1. INTRODUCTION
- 9 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2. PERFORMANCE
GD880 Product SPEC
3
2.1 Product Name
GD880 : WCDMA900/2100+EGSM/GSM850/DCS/PCS
(HSDPA 7.2Mbps / GPRS Class 12 / EDGE Class 12)
2.2 Supporting Standard
Item Feature Comment
Supporting Standard WCDMA(FDD1,8)/EGSM/GSM850
/
DCS1800/PCS1900
with seamless handover
Phase 2+(include AMR)
SIM Toolkit: Class 1, 2, 3, C-E
Frequency Range WCDMA(FDD1) TX : 1920 – 1980 MHz
WCDMA(FDD1) RX : 2110 – 2170 MHz
WCDMA(FDD8) TX : 880 – 915 MHz
WCDMA(FDD8) RX : 925 – 960 MHz
EGSM TX: 880 – 915 MHz
EGSM RX: 925 – 960 MHz
GSM850 TX: 824 – 849 MHz
GSM850 RX: 869 – 894 MHz
DCS1800 TX : 1710 – 1785 MHz
DCS1800 RX: 1805 – 1880 MHz
PCS1900 TX: 1850 – 1910 MHz
PCS1900 RX: 1930 – 1990 MHz
Application Standard WAP 2.0, JAVA 2.0
2.3 Main Parts : GSM Solution
Item Part Name Comment
Digital Baseband MSM7227 : Qualcomm
Analog Baseband PM7540 : Qualcomm
RF Chip R
T
R6285 : Qualcomm
- 10 -
LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
GD880 Product SPEC
4
2.4HW Features
Item Feature Comment
Form Factor Bar type
Battery 1) Capacity
Standard : Li-Ion, 900mAh
2) Packing Type : Soft Pack
Size Standard :
102 x 47.6 x 10.6 mm
Weight 99g With Battery
Volume
T
BD
PCB All Layer (10) , 0.75t
Stand by time 2G Up to 340 hrs
3G Up to 300 hrs
@ Paging Period 5 (2G)
@ DRX 7 (3G)
Charging time 3 hrs @ Power Off / 900mAh
T
alk time 2G Up to 190mins
3G Up to 250 mins
@ Power Level 5 (2G)
@ Tx = 12dBm (3G)
RX sensitivity WCDMA(FDD1) : -106.7 dBm
WCDMA(FDD8) : -103.7 dBm
EGSM : -105 dBm
GSM850 : -105 dBm
DCS 1800 : -105 dBm
PCS 1900 : -105 dBm
T
X
output
power
WCDMA/
GSM/
GPRS
WCDMA : 24dBm/3.84MHz,+1/-3dBm
EGSM : 33dBm
GSM850 : 33 dBm
DCS 1800 : 30 dBm
PCS 1900 : 30 dBm
Class3(WCDMA)
Class4 (EGSM)
Class4 (GSM850)
Class1 (PCS)
Class1 (DCS)
EDGE GSM 900 : 27 dBm
DCS 1800 : 26 dBm
PCS 1900 : 26 dBm
E2 (GSM900)
E2 (PCS)
E2 (DCS)
GPRS compatibility GPRS Class 12
EDGE compatibility EDGE Class 12
SIM card type Plug-In SIM
3V /1.8V
Display Main LCD
TFT Main LCD(3.2’, 480 x 854)
Built-in Camera 5M CMOS Camera
1.3M CMOS Camera (VGA)
Status Indicator Yes
Keypad Function Key : 2
Side Key : 2
Function Key:
CAM, Power
Side Key :
Volume up/down
1.3M VGA CMOS Camera
320 hrs
180 mins
225 mins
No
No
- 11 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
GD880 Product SPEC
5
AN
T
Main : Internal Fixed Type
System connector 5 Pin
Ear Phone Jack 3.5Phi, 4 Pole, Stereo
PC synchronization Yes
Memory NAND Flash : 4Gbit
SDRAM : 4Gbit
Speech coding FR, EFR, HR,AMR
Data & Fax Built in Data & Fax support
Vibrator Built in Vibrator
Blue Tooth V2.1+ EDR
MIDI(for Buzzer
Function)
SW Decoded 72Poly
Music Player MP3/AAC/AAC+
Video Player MPEG4, H.263,
Camcorder MPEG4, H.263,
Voice Recording Yes
Speaker Phone mode
Support
Yes
T
ravel Adapter Yes
CDROM Yes
Stereo Headset Yes
Data Cable Yes
T
-Flash
(External Memory)
Yes
- 12 -
LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
GD880 Product SPEC
6
2.5SW Features
Item Feature Comment
RSSI 0 ~ 7 Levels
Battery Charging 0 ~ 3 Levels
Key Volume 0 ~ 7 Level
Audio Volume 1 ~ 20 Level
T
ime / Date Display Yes
Multi-Language Yes English
/
Spanish/Portuguese
/K
orean
Quick Access Mode Dialing / Call Log / Contact / Menu
/
Message / Camera / Favorite
PC Sync Schedule / Phonebook / MEMO / SMS /
Download (Photo, file)
Speed Dial Yes (1~9) Voice mail center -> 1 key
Profile Yes
CLIP / CLIR Yes
Phone Book Name + 5 Numbers + 1 Memo + 2 e-mail
+ 3 Group Select + Picture + Ringtone +
Anniversary day
T
otal 1000 Member
Last Dial Number Yes
T
otal Call DB Max 100
LDN (SIM) N/A
Last Received
Number
Yes
T
otal Call DB Max 100
LDN (SIM) N/A
Last Missed Number Yes
T
otal Call DB Max 100
LDN (SIM) N/A
Search by Number
/ Name
Name and Number
Group 30
Fixed Dial Number Yes
Service Dial Number Yes
Own Number Yes
Voice Memo Yes
Call Reminder Yes
Network Selection Automatic
Mute Yes
Call Divert Yes
Call Barring Yes
Call Charge (AoC) Yes
Call Duration Yes
SMS (EMS) 1000 (10) EMS : Release4
(Except Text align)
SMS Over GPRS Yes
EMS Melody / Picture
Send / Receive / Save
Yes
Receive only
MMS MPEG4
Send / Receive / Save
Yes
Yes
- 13 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
GD880 Product SPEC
7
Long Message MAX 1000 Characters SMS 7pages
Cell Broadcast Yes
Download Over the WAP
Game Yes
Calendar Yes
Memo 50
World Clock Yes
Unit Convert Currency/Surface
/
Length/Volume/Weig
ht/Temperature/Velocity
Stop Watch Yes
Wall Paper Yes
WAP Browser Over WAP 2.0 Obigo
Download Melody /
Wallpaper
Yes Over WAP
SIM Lock Yes Operator Dependent
SIM Toolkit Class 1, 2, 3, C-E
MMS Yes Obigo +LG MMS Client
EONS Yes
CPHS Yes V4.2
ENS No
Camera Yes 5M AF
/
Digital Zoom : x16
JAVA Yes CLDC V1.1 / MIDP V2.0
Download Over WAP
Voice Dial No
IrDa No
Bluetooth Yes V2.0
HSP, HFP, OPP, FTP(server), BPP,
A2DP, AVRCP
FM radio Yes
GPRS Yes Class 12
EDGE Yes Class 12
Hold / Retrieve Yes
Conference Call Yes Max. 6
DTMF Yes
Memo pad Yes
T
TY No
AMR Yes
SyncML Yes
IM No
Email Yes
- 14 -
LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
GD880 Product SPEC
8
2.6 HW SPEC.
1) GSM transceiver specification
Item Specification
Phase Error Rms : 5°
Peak : 20 °
Frequency Error GSM : 0.1 ppm
DCS/PCS : 0.1 ppm
EMC(Radiated Spurious
Emission Disturbance) GSM/DCS : < -28dBm
T
ransmitter Output power and
Burst Timing
GSM : 5dBm – 33dBm ± 3dB
DCS/PCS : 0dBm – 30dBm ± 3dB
Burst Timing <3.69us
Spectrum due to modulation out
to less than 1800kHz offset
200kHz : -36dBm
600kHz : -51dBm/-56dBm
Spectrum due to modulation out
to larger than 1800kHz offset to
the edge of the transmit band
GSM :
1800-3000kHz :< -63dBc(-46dBm)
3000kHz-6000kHz : <-65dBc(-46dBm)
6000kHz < : < -71dBc(-46dBm)
DCS :
1800-3000kHz :< -65dBc(-51dBm)
6000kHz < : < -73dBc(-51dBm)
Spectrum due to switching transient 400kHz : -19dBm/-22dBm(5/0), -23dBm
600kHz : -21dBm/-24dBm(5/0), -26dBm
Reference Sensitivity –
T
CH/FS Class II(RBER) : -105dBm(2.439%)
Usable receiver input level range 0.012(-15 - -40dBm)
Intermodulation rejection –
Speech channels
± 800kHz, ± 1600kHz
: -98dBm/-96dBm (2.439%)
AM Suppression
TGSM : -31dBm
- DCS : -29dBm
-98dBm/-96dBm (2.439%)
T
iming Advance ± 0.5
T
- 15 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
GD880 Product SPEC
9
2) WCDMA transmitter specification
Item Specification
T
ransmit Frequency Band1 : 1920 MHz ~ 1980 MHz
Band8 : 880MHz~915MHz
Maximum Output Power +24 dBm / 3.84 MHz, +1 / -3 dB
Frequency Error within ±0.1 PPM
Open Loop Power Control Normal Conditions : within ±9 dB,
Extreme Conditions : within ±12 dB
Minimum Transmit Power < -50 dBm /3.84 MHz
Occupied Bandwidth < 5 MHz at 3.84 Mcps (99% of power)
Adjacent Channel Leakage
Power Ratio (ACLR)
> 33 dB @ ±5 MHz,
> 43 dB @ ±10 MHz
Spurious Emissions
|f-fc| > 12.5 MHz
< -36 dBm / 1 kHz RW @ 9 kHz ≤ f < 150 kHz
< -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
< -60 dBm / 3.84 MHz RW @ 869 MHz ≤ f ≤ 894 MHz
< -60 dBm / 3.84 MHz RW @ 1930 MHz ≤ f ≤ 1900 MHz
< -60 dBm / 3.84 MHz RW @ 2110 MHz ≤ f ≤ 2155 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
< -41 dBm / 300 kHz RW @ 1884.5 MHz < f < 1919.6 MHz
T
ransmit Intermodulation < -31 dBc @ 5 MHz & < -41 dBc @ 10 MHz
when Interference CW Signal Level = -40 dBc
Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm
Peak Code Domain Error < -15 dB at Pout t-20 dBm
- 16 -
LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
GD880 Product SPEC
10
3) WCDMA receiver specification
Item Specification
Receive Frequency Band1 : 2110 ~ 2170 MHz
Band8 : 925~960MHz
Reference Sensitivity Level Band1 : BER < 0.001 when Îor = -106.7 dBm / 3.84 MHz
Band8 : BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz
Maximum Input Level BER < 0.001 when Îor = -25 dBm / 3.84 MHz
Adjacent Channel Selectivity
(ACS)
ACS > 33 dB where BER < 0.001 when
Îor = -92.7 dBm / 3.84 MHz
& Ioac = –52 dBm / 3.84 MHz @ ±5 MHz
Blocking 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
Spurious Response BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz
& Iblocking = -44 dBm
Intermodulation 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
Spurious Emissions < -57 dBm / 100 kHz BW @ 9 kHz ≤ f < 1 GHz
< -47 dBm / 1 MHz BW @ 1 GHz ≤ f ≤ 12.75 GHz
Inner 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
- 17 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
GD880 Product SPEC
11
4) HSDPA transmitter specification
Item Specification
T
ransmit Frequency Band1 : 1920 MHz ~ 1980 MHz
Band8 : 880MHz~915 MHz
Maximum Output Power Sub
-
T
est
1=1/15, 2=12/15 21~25dBm / 3.84 MHz
3=13/15 4=15/8 20~25dBm / 3.84 MHz
5=15/7 6=15/0 19~25dBm / 3.84 MHz
HS-DPCCH
Sub-test
in table
C.10.1.4
Power
step
Power step slot
boundary
Power
step size,
P [dB]
Transmitter power
step tolerance [dB]
5
1 Start of
Ack/Nack
6 +/- 2.3
2 Start of CQI 1 +/- 0.6
3 Middle of CQI 0 +/- 0.6
4 End of CQI 5 +/- 2.3
Spectrum Emission Mask
Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
Frequency offset
from carrier f Minimum requirement Measurement
Bandwidth
2.5 ~ 3.5 MHz -35-15×(f-2.5)dBc 30 kHz
3.5 ~ 7.5 MHz -35-1×(f-3.5)dBc 1 MHz
7.5 ~ 8.5 MHz -35-10×(f-7.5)dBc 1 MHz
8.5 ~ 12.5 MHz -49dBc 1 MHz
Adjacent Channel Leakage
Power Ratio (ACLR)
Sub
-
T
est : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
> 33 dB @ ±5 MHz
> 43 dB @ ±10 MHz
Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm
5) HSDPA receiver specification
Item Specification
Receive Frequency
Band1 : 2110 ~ 2170 MHz
Band8 : 925 ~ 960Hz
Maximum Input Level
(BLER or R), 16QAM Only
Sub
-
T
est : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
BLER < 10% or R >= 700kbps
- 18 -
LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
GD880 Product SPEC
12
6) WLAN 802.11b transceiver specification
Item Specification
T
ransmit Frequency 2400 MHz ~ 2483.5 MHz ( CH1~CH13 )
T
x Power Level ≤ 20dBm under (Europe), ≤ 30dBm under (USA)
Frequency Tolerance within ±25 PPM
Chip clock Frequency
Tolerance
within ±25 PPM
Spectrum Mask ≤ -30 @ fc-22MHz< f <fc-11MHz and fc+11MHz< f <fc+22MHz
≤ -50 @ f < fc-22MHz and f > fc+22MHz
Power ramp on/off time ≤ 2us
Carrier Suppression ≤ -15dB
Modulation Accuracy
(Peak EVM)
≤ 35%
Spurious Emissions < -36 dBm @ 30MHz ~ 1GHz
< -30 dBm above @ 1GHz ~ 12.75GHz
< -47 dBm @ 1.8GHz ~ 1.9GHz
< -47 dBm @ 5.15GHz ~ 5.3GHz
Rx Min input Sensitivity ≤ -76dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8%
Rx Max input Sensitivity ≥ -10dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8%
Rx Adjacent Channel
Rejection
≥ 35dB @FER ≤ 8%,
interference input signal -70dBm@fc±25MHz(11Mbps)
GD880 Product SPEC
11
4) HSDPA transmitter specification
Item Specification
T
ransmit Frequency Band1 : 1920 MHz ~ 1980 MHz
Band8 : 880MHz~915 MHz
Maximum Output Power Sub
-
T
est
1=1/15, 2=12/15 21~25dBm / 3.84 MHz
3=13/15 4=15/8 20~25dBm / 3.84 MHz
5=15/7 6=15/0 19~25dBm / 3.84 MHz
HS-DPCCH
Sub-test
in table
C.10.1.4
Power
step
Power step slot
boundary
Power
step size,
P [dB]
Transmitter power
step tolerance [dB]
5
1 Start of
Ack/Nack
6 +/- 2.3
2 Start of CQI 1 +/- 0.6
3 Middle of CQI 0 +/- 0.6
4 End of CQI 5 +/- 2.3
Spectrum Emission Mask
Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
Frequency offset
from carrier f Minimum requirement Measurement
Bandwidth
2.5 ~ 3.5 MHz -35-15×(f-2.5)dBc 30 kHz
3.5 ~ 7.5 MHz -35-1×(f-3.5)dBc 1 MHz
7.5 ~ 8.5 MHz -35-10×(f-7.5)dBc 1 MHz
8.5 ~ 12.5 MHz -49dBc 1 MHz
Adjacent Channel Leakage
Power Ratio (ACLR)
Sub
-
T
est : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
> 33 dB @ ±5 MHz
> 43 dB @ ±10 MHz
Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm
5) HSDPA receiver specification
Item Specification
Receive Frequency
Band1 : 2110 ~ 2170 MHz
Band8 : 925 ~ 960Hz
Maximum Input Level
(BLER or R), 16QAM Only
Sub
-
T
est : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
BLER < 10% or R >= 700kbps
- 19 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
GD880 Product SPEC
13
7) WLAN 802.11g transceiver specification
Item Specification
T
ransmit Frequency 2400 MHz ~ 2483.5 MHz ( CH1~CH13 )
T
x Power Level ≤ 20dBm under (Europe), ≤ 30dBm under (USA)
Frequency Tolerance within ±25 PPM
Chip clock Frequency
Tolerance
within ±25 PPM
Spectrum Mask ≤ -20 @ ±11MHz offset (9Mhz ~ 11MHz)
≤ -28 @ ±20MHz offset (11MHz ~ 20Mhz)
≤ -40 @ ±30MHz offset (20MHz ~ 30Mhz)
T
ransmitter constellation error
(rms EVM)
≤ -5dB
Spurious Emissions < -36 dBm @ 30MHz ~ 1GHz
< -30 dBm above @ 1GHz ~ 12.75GHz
< -47 dBm @ 1.8GHz ~ 1.9GHz
< -47 dBm @ 5.15GHz ~ 5.3GHz
Rx Min input Sensitivity PER ≤ 10%
-82dBm@6Mbps, -81dBm@9Mbps, -79dBm@12Mbps
-77dBm@18Mbps, -74dBm@24Mbps, -70dBm@36Mbps
-66dBm@48Mbps, -65dBm@54Mbps
Rx Max input Sensitivity ≥ -20dBm(6,9,12,18,24,36,48,54Mbps) @ PER ≤ 10%
Rx Adjacent Channel
Rejection
PER ≤ 10%,
ACR ≥ 16dB@6Mbps, ACR ≥ 15dB@9Mbps,
ACR ≥ 13dB@12Mbps,ACR ≥ 11dB@18Mbps,
ACR ≥ 8dB@24Mbps, ACR ≥ 4dB@36Mbps
ACR ≥ 0dB@48Mbps, ACR ≥ -1dB@54Mbps
ACR shall be measured by setting the desired signal's strength
3 dB above the rate-dependent
sensitivity specified in min input sensitivity
8) GPS receiver specification
Item Specification
Receive Frequency 1574.42 MHz ~ 1576.42 MHz
Minimum Sensitivity 1 satellite ≥-142dBm, 7 satellites ≥ -147dBm at coarse time aiding
- 20 -
LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
GD880 Product SPEC
14
2.7 GD880 Figures
- 21 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
ZUG{Gi
3. Technical Description
3.1 Digital Baseband(DBB/MSM7227)
3.1.1 General Description
A. Features(MSM7227)
WCDMA Rel ‘99 plus HSDPA and HSUPA
GSM/GPRS/EDGE
High-performance ARM1136JF-S™ application processor at up to 600 MHz; QDSP5000™ at 320 MHz
High-performance ARM926EJ-S™ modem processor at up to 400 MHz; QDSP4000™ at 122.88 MHz
Java® hardware acceleration for faster Java-based games and other applets
Support for Bluetooth® 2.1 EDR via an external Bluetooth System-on-Chip (SoC)
High-speed, serial mobile display digital interface (MDDI) that optimizes the interconnection
cost between the MSM device and the LCD panel
Receive diversity support for WCDMA mode, thereby providing improved capacity and data throughput
USB 2.0 compliant high-speed USB core with limited OTG capabilities
Integrated high-speed USB PHY
Integrated wideband stereo codec for digital audio applications
Direct interface to digital camera module with video front-end (VFE) image processing
GPS position location capabilities
Vocoder support (GSM-HR, FR, EFR, AMR, and AMR-WB/+)
Advanced 12 Ý12 Ý1.05 mm, 0.4 mm pitch, 560 NSP
High-performance ARM1136JF-S 600 MHz application processor
Industry standard ARM926EJ-S 400 MHz embedded microprocessor subsystem
QDSP5000 320 MHz application digital signal processing (ADSP)
QDSP4000 122.88 MHz modem digital signal processing (MDSP)
256 kB internal memory (IMEM) for graphics, internal functions, DSP, etc.
Dual-memory buses separating the high-speed memory subsystem (EBI1) from low-speed
peripherals (EBI2) such as LCD panels
Enhanced EBI1 memory support: 200 MHz bus clock for DDR SDRAM
EBI2 support
All modes and data rates for WCDMA frequency division duplex (FDD), with the following restrictions
Full SF range support from 4 to 256
SMS (CS and PS)
PS data rate – 384 kb/s DL/384 kb/s UL
CS data rate – 64 kb/s DL/64 kb/s UL
AMR (all rates)
3. TECHNICAL BRIEF
Table of contents
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