BCM2049 Просмотр технического описания (PDF) - Broadcom Corporation
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BCM2049 Datasheet PDF : 2 Pages
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OVERVIEW
GPIO
VDD
VBAT
Reset
XTAL or TCXO
32 kHz LPO
Bluetooth
Antenna
32-bit CPU
CPU Subsystem
ROM RAM
REG
POR
OSC
LPO
PMU
Bus Matrix
SmartAudio®
Technology
Bluetooth®
RF
Bluetooth®
Baseband
2 x ADC
FM+RDS
TX
FM+RDS
RX
FM RF
2 x DAC
Host Interface
COEX Support
Analog Audio In
FM Tx Antenna
FM Rx Antenna
Analog Audio Out
UART (H4, H5)
PCM/I2S
I2S
SDIO
SPI
BSC (I2C-Compatible)
WLAN/WIMAX COEX
BCM2049 Block Diagram
The Broadcom® BCM2049 is a cost-effective solution for portable
devices, such as mobile handsets and media players, that require
Bluetooth and FM receiver/transmitter functionality. At the software
layer, the BCM2049 is backward-compatible with Broadcom’s
Bluetooth + FM device family, which includes the BCM20780 and
BCM2048.
generation and mixing, and audio dynamic range control. The FM
transmitter core can take its input audio data from stereo line-level
analog inputs, an I2S port, or a host interface control port. To simplify
the generation of a continuous Radio Data System (RDS) data stream,
the BCM2049 also includes a flexible RDS and Radio Broadcast Data
System (RBDS) transmit preprocessor.
The BCM2049 Bluetooth® core is optimized for low current
consumption and minimal external bill of materials, while maintaining
high receiver sensitivity and up to +10 dBm of transmit output power.
The Bluetooth core is fully Bluetooth 2.1 + EDR compliant.
SmartAudio® technology has also been added to enhance voice quality
by supporting packet loss concealment and wideband speech. In
conjunction with Broadcom’s BTE-Mobile software stack, the
BCM2049 supports multiple simultaneous Advanced Audio Distribution
Profile (A2DP) streams, enabling music sharing between several stereo
Bluetooth headsets.
The BCM2049’s FM+RDS/RBDS receiver core supports frequencies
down to 65 MHz for the Eastern European OIRT band and use with an
internal or external FM antenna. By supporting the internal FM antenna,
the BCM2049 makes it possible to listen to FM radio over Bluetooth
headsets without requiring an additional antenna attachment.To reduce
system current consumption when operating in this mode, the BCM2049
has an on-chip, Subband Codec (SBC) encoder. The SBC encoder
compresses the received FM audio signal into A2DP packets, without
host intervention. The BCM2049 also supports FM recording with on-
chip MP3 encoding.
The BCM2049 includes a feature-rich FM transmitter core that supports
programmable transmit frequencies between 76 and 108 MHz to cover
worldwide bands. The FM transmitter core has an on-chip, high-output
power amplifier with power control, making it possible to optimize FM
transmit output power and at the same time complying with US and
European regulatory requirements.
The FM transmit function also benefits from the SmartAudio technology
built into the BCM2049, such as flexible rate matching, polyphonic tone
Applying Broadcom's experience in real-world FM broadcast receiver
environments, the BCM2049 employs advanced FM search algorithms.
To minimize the printed circuit board (PCB) footprint and lower system
cost, all external components related to the FM VCO are integrated into
the BCM2049. The BCM2049 is available in a space-saving 0.4 mm ball
pitch WLBGA package for either chip-on-board or module applications.
A 0.5 mm ball pitch BGA package is also available.
Broadcom®, the pulse logo, Connecting everything®, and the Connecting everything logo are among
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
and/or the EU. Any other trademarks or trade names mentioned are the property of their respective
owners.
®
BROADCOM CORPORATION
5300 California Avenue
Irvine, California 92617
© 2009 by BROADCOM CORPORATION. All rights reserved.
2049-PB05-R
04/24/09
Phone: 949-926-5000
Fax: 949-926-5203
E-mail: info@broadcom.com
Web: www.broadcom.com
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