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3.17. FM radio & BLUETOOTH
•
FM radio
Simultaneous operation with Bluetooth
- Support of US/Europe (87.5 to 108 MHz) and Japanese (76 to 90 MHz) FM band
- Wide dynamic range AGC
- Soft mute and stereo blend
- Adjustment-free stereo decoder and AFC
- Autonomous search tuning function (up/down) with programmability (threshold setting)
- RDS demodulator
- Audio output available over Bluetooth audio interface or dedicated audio output
- Control of FM via Bluetooth HCI or I2C
- Adaptive filter to suppress narrow band interference in the FM channel
•
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.
R419
L405
NA
FM_SND_R
FM_SND_L
C452
1000p
CLK32K
C454
1000p
BT_CLK
FM_ANT
1V5
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
BLUETOOTH_CSR
ANT402
NC1
FEED
NC2
C440
C441
NA
15p
0.1u
C447
NA
C448
C449
15p
15p
47n
C450
A3
A4
A5
C451
220n
R420
560
B3
C9
K3
0.1u
C453
J2
K2
L407
470nH
L406
33nH
C455
B1
820p
A1
C457
C458
15p
15p
B5
D1
E1
LFB212G45BA1A220
F1
FL402
G1
UB
B1
6.8nH
3
5
NC_DC
G2
C459
2
6
NC
B2
1
7
C460
15p
BT_VCXO_EN
BT_RESETn
Figure 23. Bluetooth / FM Radio Circuit Diagram
2V62_VIO
C437
1V5
0.01u
C442
2.2u
AU_REF
SPKR_R
SPKR_L
FILT_EXT
CLK_32K
LO_REF
XTAL_OUT
XTAL_IN
BLUECORE5-FM
FM_P
FM_N
M401
AUX_DAC
RX_N
RX_P
RF_P
RF_N
TP409
C461
C462
0.1u
0.1u
C464
2.2u
2V62_VIO
- 53 -
3. TECHNICAL BRIEF
I2C_DATA
C8
I2C_CLK
C7
USB_DN
K6
USB_DP
J7
UART_BT_RTS
UART_CTS
H6
TP401
UART_BT_CTS
UART_RTS
H5
TP402
UART_RX
UART_BT_TX
K7
TP403
UART_BT_RX
UART_TX
J8
TP404
PCM2_CLK
D9
PCM2_SYNC
D10
PCM2_IN
E10
PCM2_OUT
D8
I2S1_CLK
PCM_CLK
H9
TP405
I2S1_WA0
PCM_SYNC
J10
TP406
I2S1_TX
PCM_IN
K8
TP407
I2S1_RX
PCM_OUT
H7
TP408
2V65_VBT
C463
0.01u
C465
2.2u
LGE Internal Use Only
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