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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
Figure 3.5 BCM2048 CIRCUIT DIAGRAM
(USC5 : CTS)
(Q>20@200MHz)
BLFM RADIO
(1%)
(USC4 : RTS)
0.1u
C616
C606
1000p
10p
C600
C619
TP603
0.1u
TP602
56 nH
L603
NA
R615
C608
1.8p
R601
NA
1u
C617
47
R607
R606
OUT601
47
47
R605
TP606
2V8_VEXT
2V8_VEXT
FB600
47K
R612
NA
L601
R600
0
TP607
C603
0.1u
C607
47p
1000p
C614
C609
1u
TP600
OUT600
TP601
47
R608
1u
0
R613
C629
C610
C628
0.1u
0.1u
100nH
L602
47p
C601
R602
150K
C602
1.8p
0.1u
C612
1u
C611
C613
1u
R610
47K
VBAT
VSS2
VSS3
D2
D7
VSS4
VSS5
E4
VSS6
E5
F2
VSS7
F4
VSS8
VSS9
F5
K3
XTALN
XTALP
K2
J8
VDDPLL
K1
VDDR3V
B6
A6
VDDR5V
VDDRF1
E1
E2
VDDRF2
J3
VDDXO
VREGFM_DAC
A5
B5
VREG_BT
VREG_CTL
D5
B2
VSS1
G2
VSS10
VSS11
G4
G10
VSS12
VSS13
H1
J2
VSS14
C2
G5
D9
VDDC2
G7
VDDC3
VDDC4
A7
J10
VDDC5
A4
VDDFM1
VDDFM2
B1
B3
VDDFM3
VDDFM4
J4
K4
VDDFM5
VDDLO
J1
K8
VDDO18_1
VDDO18_2
A8
F9
VDDO18_3
VDDO33_1
A9
E10
VDDO33_2
VDDO33_3
GPIO5
B8
GPIO6
GPIO7
D10
B4
LPOIN
H2
RES
G1
RFION
RFIOP
F1
RST_N
D6
TM0
K7
J7
TM1
TM2
F6
TM3
J6
F7
UART_CTS_N
UART_RTS_N
C9
J9
UART_RXD
UART_TXD
K10
VDDC1
A10
A_GPIO4
E9
K9
A_GPIO5
A_GPIO6
B7
E7
A_GPIO7
FMPLLCAP
D4
FMRF_INN
C1
D1
FMRF_INP
FMVCO_LN
A2
A3
FMVCO_LP
A1
FM_CVAR
GPIO0
H10
GPIO1
H9
F10
GPIO2
G9
GPIO3
GPIO4
E6
G6
BCM2048SKUFBG
U600
AUDIOGND
J5
AUDIOL
K6
K5
AUDIOR
B9
A_GPIO0
A_GPIO1
C10
B10
A_GPIO2
A_GPIO3
TP604
TP605
IN
OUT
C604
10p
LFB212G45SG8A166
FL600
GND1
GND2
L600
270nH
FB601
USC6
BT_LDO_EN
PCM_RX_BT
USC0
PCM_SYNC
PCM_TX_BT
BT_DBB_INT
FM_ANT
DEBUG_RX
DBB_BT_INT
_BT_RST
26M_BT
BT_32K
BT_MAIN_CLK_EN
FM_AUDIO_L
FM_AUDIO_R
BT_RTS
BT_CTS
DEBUG_TX
Содержание MG295
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