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LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. BB Circuit Technical brief
GM310f service manual
3.14 BLUETOOTH
3.14.1 General DESCRIPTION
The RBCA-B561A is a single module for Bluetooth 2.4 GHz systems including enhanced data rates
(EDR) to 3 Mbits/s. It also includes FM radio receiver.
[Figure 3.14.1-1] Bluetooth Circuit Diagram
The BCM2048 of Broadcom is built in RBCA-B561A module. The BCM2048 is the optimal solution for any
Bluetooth voice or and/or data application that also require 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.
We used the level shifter to adjust I/O level of the Bluetooth module.
M
F
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H
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VBATT
36
VDDIO
13
VDDR3V
37
VDDRF
35
VDDTF
28
34
VREG_CTL
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24
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I2S_SDO I2S_WS
23
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DBB_BT_INT
BT_INT
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I2S_WS
I2S_SDO
I2S_SCK
BT_RESETn
BT_VCXO_EN
8
V
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2
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Содержание GM310
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