Only For Training And Service Purposes - LG GT500 Service Manual

3. TECHNICAL DESCRIPTION
G. GT500 Bluetooth Schematic
Careful routing of BT_CLK
Keep away from noise signals
BT_CLK
VDDE_1V8
BT_CLKREQ_n
APP_GP_FM_GPIO2
RESOUT1_n
RTCCLK
APP_I2C_SCL
Clock
- Clock request
Connected to CLKREQ of DB3200 and AB3100, input to RF3300
- Fast clock : 26MHz
Supplied MCLK from RF3300
Frequency deviation : ±20ppm
- Low power clock : 32.768kHz
Supplied RTCCLK from AB3100
Power
- Supplied 2.75V, 1.8V from internal regulators of AB3100
Reset
- RESOUT2n signal of DB3200 controls STLC2593C reset.
SPI
- Connected to SPI of DB3200
- HCI interface between DB3200 and STLC2593C
PCM
- Audio signal interface between DB3200/AB3100 and STLC2593C
ANT
- 2.4GHz, 50 ohm matching
LGE Internal Use Only
U730 SN74LVC1G125DRLR
5
1
BT_CLKREQ_n _OE VCC
2
MCLKSEC A
4
3
GND Y
C730
0.1u
U731
K7
RESOUT2_n BT_RESETN
F6
BT_REF_CLK_IN
K9
RTCCLK BT_LP_CLK
L9
BT_WAKEUP
H9
ACC_SPI_MOSI BT_UART_RXD
K6
ACC_SPI_CLK BT_UART_CTS
N4
PCM_SYNC BT_PCM_SYNC
M4
PCM_CLK BT_PCM_CLK
K5
PCM_DLD BT_PCM_A
M5
PCM_ULD BT_PCM_B
M3
BT_GPIO_9
K3
PTA_BT_PRIO BT_GPIO_11
K4
PTA_BT_STATE BT_GPIO_10
J3
PTA_WLAN_ACTIVE BT_GPIO_16
L3
WLAN_SLEEPn BT_GPIO_8
R733 DNI
G9
BT_GPIO_0
VDDE_1V8 E7
BT_CLK_REQ_IN_1
F9
BT_CLK_REQ_IN_2
E8
ACC_GP_SPI_BT_IRQ BT_HOST_WAKEUP
L7
BT_CONFIG_1
M7
BT_CONFIG_2
N6
BT_CONFIG_3
J8
BT_CLK_REQ_OUT_2
B2
BT_RSVR_CL1
VDDK_2V75
VDD_BT C3
BT_RSVR_CL2
M8
BT_RSVR_D
C1
BT_RSVR_DSM
C2
BT_RSVR_N
M2
BT_RSVR_RF
J4
BT_REG_CTRL
N7
BT_HVD
E6
BT_VDD_CLD
VDDE_1V8 VBAT VDDE_1V8 D4
NC1
F7
NC2
F8
NC3
L4
NC4
L5
NC5
L6
NC6
A4
FM_VA
B3
FM_VD
A7
FM_GPIO1
A6
FM_GPIO2
A5
FM_GPIO3
B8
FM_FMIP
C9
FM_RSTB
D7
FM_RCLK
D9
FM_SENB
R741
E9
FM_SCLK
110
Figure 3-1-11. Schematic of STLC2593C
VDDE_1V8
VDD_BT
R730
BT_CLK
33
C731
4.7u
VDDE_1V8
ACC_SPI_MISO
ACC_GP_SPI_BT_CSn
STLC2593
J7
BT_CLK_REQ_OUT_1
G7 FL730
BT_UART_TXD
J6 5
BT_UART_RTS BP1
K1 4
BT_RFP BP2
J1
BT_RFN
VDDE_1V8
M6
BT_VIO_A
J9
BT_VIO_B
N3
BT_VIO_C
N5
BT_VIO_D FB730
G8
60
BT_VIO_E
VSS_BT_RF
H6
BT_VSSDIG1
H7
BT_VSSDIG2
H8
C733
BT_VSSDIG3
K8
BT_VSSDIG4 0.1u
L8
BT_VSSDIG5
D1
BT_VSSANA1
D2
BT_VSSANA2
E3
BT_VSSANA3
F1
BT_VSSANA4
F2
BT_VSSANA5
F3
BT_VSSANA6
F4 VSS_BT_ANA
BT_VSSANA7
G1
BT_VSSANA8
G3
BT_VSSANA9
G4 VDDK_2V75
BT_VSSANA10
H3
BT_VSSANA11
H4
BT_VSSANA12
H1
BT_VSSRF1
L1
BT_VSSRF2
J2
BT_VSSRF3
K2
BT_VSSRF4
VSS_BT_RF
L2
BT_HVA1
D3
BT_HVA2
E1
BT_HVA3 C734
E2
BT_HVA4 0.1u
VDDE_1V8
E4
BT_HVA5
H2
BT_TEST1
G2
BT_TEST2
G6
BT_AF_PRG
R737
VSS_BT_ANA 0
C5
FM_ROUT
B5
FM_LOUT
D6
FM_VIO
R739
D8
FM_SDIO
110
A3
FM_GND1 C739
B4
FM_GND2 0.1u
B6
FM_GND3
B7
FM_GND4
C4
FM_GND5
C6
FM_GND6
C7
FM_GND7
D5
FM_GND8
C8
FM_RFGND
- 32 - Copyright © 2009 LG Electronics. Inc. All right reserved.
VDD_BT
RF GND: Isolate from Common GND
on L1, L2 and L3
Analog GND must be Isolated from
Common GND on L1, L2 and L3
DEA212450BT-7043C1
C732 100p
1
U_BP BT_TXRX
2
BP_DC
C737 1u
FM_RP
C738 1u
FM_LP
APP_I2C_SDA
FM_ANT

Only for training and service purposes