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3.15 BLUETOOTH & FM Radio (BCM2048, U600)
The Broadcom BCM2048 is a monolithic single-chip, Bluetooth 2.0+EDR-compliant, baseband
processor/2.4-GHz transceiver with an integrated FM and RDS/RBDS receiver. It features the highest
level of integration and eliminates all critical external components, thereby minimizing the footprint,
power consumption, and system cost of a Bluetooth plus FM radio solution.
The BCM2048 also supports key features of upcoming Bluetooth standards and offers a firmware
migration path to new features. The BCM2048 is the optimal solution for any Bluetooth voice or and/or
data application that also requires a FM radio receiver. The Bluetooth subsystem presents a Host
Controller Interface (HCI) using a high speed UART and PCM for audio. The FM subsystem supports
I2C compatible control interface and stereo analog output, as well as I2S and PCM interfaces. The
BCM2048 incorporates all Bluetooth 2.0 features including eSCO, AFH, and Fast Connect as well as
support for InConcert collaborative coexistence with WLAN devices.
The BCM2048 Bluetooth radio transceiver provides enhanced radio performance to meet the most
stringent handset temperature applications or the tightest integration into mobile handsets and
portable devices. It is fully compatible with any of the standard TCXO frequencies and provides ful
radio compatibility to operate simultaneously with GPS, WLAN, and cellular radios.
BLUETOOTH+FM RADIO
C601
47p
100nH
L602
C603
47p
FM_AUDIO_L
FM_AUDIO_R
26M_BT
BT_32K
USC6
BT_MAIN_CLK_EN
BT_DBB_INT
DBB_BT_INT
PCM_TX_BT
PCM_RX_BT
PCM_SYNC
USC0
_BT_RST
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C600
10p
L600
R600
0
L601
NA
C602
R602
1.8p
150K
(1%)
H2
FL600
RES
C604 10p
F1
RFIOP
IN
OUT
G1
RFION
GND1
GND2
LFB212G45SG8A166
D4
FMPLLCAP
D1
FMRF_INP
C1
FMRF_INN
A3
FMVCO_LP
L603
56 nH
A2
FMVCO_LN
(Q>20@200MHz)
A1
FM_CVAR
C628
0.1u
K6
AUDIOL
C629
0.1u
K5
AUDIOR
J5
AUDIOGND
C606
1000p
K2
XTALP
K3
XTALN
C607
0.1u
B4
LPOIN
BCM2048SKUFBG
R615
NA
D10
GPIO7
TP600
B8
GPIO6
TP601
G6
GPIO5
E6
GPIO4
G9
GPIO3
F10
GPIO2
TP602
H9
GPIO1
TP603
H10
GPIO0
E7
A_GPIO7
B7
A_GPIO6
K9
A_GPIO5
E9
A_GPIO4
A10
TP604
A_GPIO3
TP605
B10
A_GPIO2
TP606
C10
A_GPIO1
TP607
B9
A_GPIO0
D6
RST_N
C614
1000p
C619
0.1u
Figure 3.5 BCM2048 CIRCUIT DIAGRAM
3. TECHNICAL BRIEF
270nH
FM_ANT
OUT600
F7
R605
47
UART_CTS_N
BT_RTS
C9
R606
47
UART_RTS_N
BT_CTS
J9
R607
47
UART_RXD
DEBUG_TX
K10
R608
47
UART_TXD
DEBUG_RX
R610
47K
J6
TM3
F6
TM2
J7
TM1
K7
R612
47K
TM0
D5
R613
0
VREG_CTL
B5
VREG_BT
A5
VREGFM_DAC
A6
VDDR5V
B6
VDDR3V
K8
U600
VDDO18_1
A8
VDDO18_2
F9
VDDO18_3
G5
FB601
VDDC1
D9
VDDC2
G7
VDDC3
A7
VDDC4
J10
VDDC5
E1
VDDRF1
E2
VDDRF2
K1
VDDPLL
J3
VDDXO
J1
VDDLO
A4
VDDFM1
B1
VDDFM2
B3
VDDFM3
J4
VDDFM4
K4
VDDFM5
A9
VDDO33_1
E10
VDDO33_2
J8
VDDO33_3
C616
C617
0.1u
1u
- 37 -
OUT601
(USC4 : RTS)
(USC5 : CTS)
2V8_VEXT
VBAT
2V8_VEXT
FB600
BT_LDO_EN
C611
C612
C613
C608
C609
C610
0.1u
1u
1u
1.8p
1u
1u
LGE Internal Use Only
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