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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. BB Circuit Technical brief
3. BB Circuit Technical brief
GM310f service manual
3.1 Functional Block Diagram
[Figure 3.1] Functional Block Diagram
3.2 Baseband Processor Introduction
[Figure 3.2] Top level block diagram of the MPEH(PMB8868)
BaseBand Processor
PMB8868
18Pin-MMI
3.5
Φ
BT / FM
PMIC
PMB6821
Mot
Charging
BATTER
Y
U
TA
Micro
S
Memory
1Gb Nand
Ba
MP3 Chip
TCC8121
USB
Audio
RF
EDGE
FEM
Duplex
UMTS
Transceiver
PMB6952
UMTS
Duplex
UMTS
Switc
Fu
ll
F
N
BaseBand Processor
PMB8868
18Pin -MMI
Connector
18Pin-MMI
Connector
RCV/SPK
3.5
Φ
Ear-phone
Filter
BT / FM Radio
RBCA-B561A
32K
PMIC
PMB6821
Motor
Charging IC
ISL9221
BATTERY
900mAh
USIM
USIM
Hall IC
Hall IC
Motor IC
Motor IC
TA
TA
Micro SD
Micro SD
Switch
Switch
Charge
Pump
Charge
Pump
Memory
1Gb Nand
512Mb SDRam
Backup
Battery
QVGA LCD(240 x 320)
MP3 Chip
TCC8121
USB
USB
Audio Amp
LM49150
LDO
LDO
Switch
3M Camera
Mic
Full
speed U
S
B
High speed USB
Main Keypad
Sub Keypad
Touch IC
Touch IC
FM Re
co
rd
in
g
Na
vi
Key
RF Part
GSM/EDGE 850/900/1800/1900
EDGE
PAM
FEM
Duplex
UMTS
PAM
Transceiver
PMB6952
26M
UMTS 1900 or 2100
UMTS
LNA
Duplex
UMTS 850 or 900
BaseBand Processor
PMB8868
18Pin -MMI
Connector
18Pin-MMI
Connector
RCV/SPK
RCV/SPK
3.5
Φ
Ear-phone
Filter
Filter
BT / FM Radio
RBCA-B561A
32K
32K
PMIC
PMB6821
Motor
Charging IC
ISL9221
BATTERY
900mAh
USIM
USIM
Hall IC
Hall IC
Motor IC
Motor IC
TA
TA
Micro SD
Micro SD
Switch
Switch
Charge
Pump
Charge
Pump
Memory
1Gb Nand
512Mb SDRam
Backup
Battery
QVGA LCD(240 x 320)
QVGA LCD(240 x 320)
MP3 Chip
TCC8121
USB
USB
Audio Amp
LM49150
LDO
LDO
Switch
3M Camera
3M Camera
Mic
Full
speed U
S
B
High speed USB
Main Keypad
Main Keypad
Sub Keypad
Touch IC
Touch IC
FM Re
co
rd
in
g
Na
vi Key
RF Part
GSM/EDGE 850/900/1800/1900
EDGE
PAM
FEM
Duplex
UMTS
PAM
Transceiver
PMB6952
26M
UMTS 1900 or 2100
UMTS
LNA
Duplex
UMTS 850 or 900
RF Part
GSM/EDGE 850/900/1800/1900
EDGE
PAM
FEM
Duplex
UMTS
PAM
Transceiver
PMB6952
26M
UMTS 1900 or 2100
UMTS
LNA
Duplex
UMTS 850 or 900