LG GS290 Service Manual page 24

GS290 Operational Description
SIM I/F
CC_IO
CC_CLK
CC_RST
I2S2
I2S2_CLK0
GPIO_102
I2S2_RX
I2S2_TX
I2S2_WA0
GPIO_103
External Memory
MMCI_CMD
MMCI_DAT[0]
MMCI_CLK
GPIO_109
IrDA
GPIO_110
GPIO_109
I2S1
I2S1_CLK0
I2S1_CLK1
I2S1_RX
I2S1_TX
I2S1_WA0
External Memory
MMCI_DAT[1]
MMCI_DAT[2]
MMCI_DAT[3]
Audio I/F
EPN1
EPP1
EPPA1
EPREF
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Only for training and service purposes
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SIM_IO SIM CARD I/O
SIM_CLK SIM CARD CLOCK
SIM_RST SIM CARD RESET
Not used
LCD ID LCO Bender Check
Not used
Not used
Not used
Not used
TF_CMD T-flash
TF_DAT0 T-flash
TF_CLK T-flash
CAM_LDO_EN Camera Power LDO Control
BT_PCM_CLK For Bluetooth
MMC_DETECT T-flash Detect
I2S1_RX For Bluetooth
I2S1_TX For Bluetooth
I2S1_WA For Bluetooth
TF_DAT1 T-flash
TF_DAT2 T-flash
TF_DAT3 T-flash
EAR_N For Receiver
EAR_P For Receiver
BBP_SND_L For Speaker
Reference
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3. TECHNICAL BRIEF
Revision B
LGE Internal Use Only
LGE Property