LG Prada KE850 Service Manual page 56

USIF_TXD
USIF_RXD
VRF2V65 1V5_Core 1V8_SD
C420
0.1u
C428 C429 C430
0.1u 0.1u 0.1u
C436
1.5p
FSYS2
ANT401
FEED
NC GND
10OL21C7AJ00001
NA
C451
2V72_IO
B6
TDO
A7
TDI
B4
TMS
B7
TCK
A6
TRST_
B9
RTCK
A5
JTAG_
F1
VDDSUP
D2
PMB8753
VDDCREG
A8
VDD_1
B3
VDD_2
F9
VDDC1
B5
VDDC2
G2
VDDPMREG
H4
VDDRF
E1
VDDRFREG1
E2
VDDRFREG2
H1
VDDPLL
J6
VCOCAP1
H6
VCOCAP2
C437 C438 C439
0.1u 1000p 0.01u
C441 1000p
FL401 DBF71B601
C450
1
UB B2
100p
2
DC B1
C457
100p
Figure 29 Bluetooth circuit
- 57 -
3. TECHNICAL BRIEF
C404
0.1u
R404
0
R405
0
R407
0
R409
0
NA NA
C406 C407
C9
SCL0_P0_13
C8
PCMFR2_SDA0_P0_12
TP410
F8
SLEEPX_P0_15
C2
CLK32_P1_5
B1
WAKEUP_HOST_P1_8
B2
WAKEUP_BT_P1_7
D1 TP411
RESET_
H5
U402
RFOUT
A4
PAON
A3
PSEL0
B8
PSEL1
A2
TX_CONF_RXON
F2
VSSVCO
F4
VSSRF1
E5
VSSRF2
F5
VSSRF3
E4
VSSRF4
L408 L409
1.8nH 1.8nH
C447
2p
4
3
I2S1_CLK
I2S1_WA0
I2S1_RX
I2S1_TX
NA NA
C408 C409
BT_VCXO_EN
CLK32K
BT_RST