Bluetooth; Only For Training And Service Purposes - LG KC780 Service Manual

3. TECHNICAL BRIEF

3.15 BLUETOOTH

General Features
The BlueCore 5-FM BGA is a single chip radio and baseband IC for Bluetooth 2.4 GHz systems including
enhanced data rates (EDR) to 3Mbits/s. It includes an integrated FM receiver with stereo audio output stage
and an RDS demodulator.
With the on-chip CSR Bluetooth software stack, it provides a fully compliant Bluetooth system to v2.0+EDR of
the specification for data and voice communications.
BLUETOOTH_CSR
R517
1.5nH
L509
NA
L510
1.8p
FM_SND_R
FM_SND_L
CLK32K
26M_BT
FM_ANT
C542
15p
FL501
LFB212G45BA1A220
VRF2_1V5_internal
L515 22nH
C543
1.5p
Bluetooth Radio
• Common TX/RX teminal simplifies external matching, eliminates external antenna switch
• No external trimming is required In production
• Bluetooth v2.0 + EDR Specification compliant
LGE Internal Use Only
VIO_2V62
ANT501
C525
NC1 0.01u
FEED NC2
C526 C527 C528
15p 0.1u 0.068u
C532 C533
15p 15p
47n C534
AU_REF
A3
SPKR_R
A4
SPKR_L
A5
C535 220n R520
C536 560
FILT_EXT
1000p B3
CLK_32K
C537
C9
LO_REF
0.01u
C538 K3
XTAL_OUT
1000p
J2
XTAL_IN
K2
L511 33nH
L512 470nH
C539
FM_P
820p C540 B1
FM_N
C541 15p
820p A1
R521 AUX_DAC
B5
RX_N
D1
0 RX_P
E1
UB B1 RF_P
L513
3 L514 F1
5
NC_DC G2 RF_N
DNI
2 4.7nH G1
6
NC B2
1
7
R522
0
BT_INT
TP507
BT_VCXO_EN
BT_RESET
VIO_2V62
Figure 27. Bluetooth / FM Radio Circuit Diagram
FB501
VRF2_1V5_internal
C529 C530 C531
22n 27p 15p
U503
BLUECORE5-FM
DNI
C544
R523
2.2
C546
2.2u
DNI
C548
- 54 - Copyright © 2008 LG Electronics. Inc. All right reserved.
I2C_DATA
C8
I2C_CLK
C7
USB_DN
K6
USB_DP
J7
UART_CTS UART_BT_RTS
H6
UART_RTS UART_BT_CTS
H5 TP508
UART_RX UART_BT_TX
K7 TP509
UART_TX UART_BT_RX
J8
PCM2_CLK
D9
PCM2_SYNC
D10
PCM2_IN
E10
PCM2_OUT
D8
TP501
PCM_CLK I2S1_CLK
H9
TP502
PCM_SYNC I2S1_WA0
J10
TP503
PCM_IN I2S1_TX
K8 TP504
I2S1_RX
PCM_OUT
H7
VAUX_2V9
FB502
C545
C547 2.2u
0.01u

Only for training and service purposes