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BCM2048
(R)
BLUETOOTH(R) 2.0 + EDR SINGLE-CHIP HCI SOLUTION WITH INTEGRATED FM+RDS RADIO RECEIVER
BLUETOOTH FEATURES
* Monolithic single die integration of Bluetooth and FM Radio * Bluetooth specification 2.0 +EDR compliant with all data packet types and lengths supported * Best-in-class Bluetooth radio based on the proven BCM2045 core * Supports class 1 and 2 designs * Integrated InConcertTM 2-wire as well as industry standard 3-wire collaborative coexistence with WLAN systems * No factory alignment required * 5.5 Volt preregulator allows direct connect to lithium batteries www..com * Improved Bluetooth transport with 4-Mbaud UART * Includes numerous enhancements for lower power dissipation * ROM-based solution with flexible code patching * Available in WLCSP 0.6 mm height and FPBGA <1 mm height
FM+RDS RADIO FEATURES
* * * * * * * * * * * *
76-MHz to 108-MHz FM bands supported (US, Europe, and Japan) Excellent radio performance with 1 uV sensitivity for 26 dB (S+N)/N FM control through either BSC-compatible interface or Bluetooth HCI Signal dependant stereo/mono blending Signal dependant soft mute Auto search and tuning modes Audio silence detection RSSI, IF frequency, status indicators RDS and RBDS demodulator and decoder with filter and buffering functions Operates from 32-kHz or reference clock inputs Flexible output interfaces including PCM, I2S, and analog stereo DAC and drivers. Integrated FM and RDS receiver with only one external cap, one external inductor and optional antenna matching
SUMMARY OF BENEFITS
* Bluetooth 2.0 +EDR compliant with easy migration to future specification * Low external BOM cost and small area with 10 external RLC components. The PCB foot print is < 35 mm2 area. * Operates directly from a lithium battery or from fixed voltages down to 1.65 Volt * Best-in-class RF performance for longest range and ease of system integration * Full featured FM system with RDS/RBDS capability * FM system can operate independently from Bluetooth * Highly flexible interfaces for control and data/audio routing * Improved power dissipation for longer battery life
APPLICATIONS
* * *
Mobile handsets and smart phones Personal digital assistants Mobile MP3 players
BCM2048 Functional Block Diagram
UART
Microprocessor and Memory Unit (uPU)
Bluetooth Radio Transceiver, Modem
GPIO, Clocks
PCM, I2S
High-Speed Peripheral Transport Unit (PTU)
Bluetooth Baseband Core (BBC)
I2C Compatible
FM Control and IO
Analog Audio
FM and RDS/ RBDS Radio Receiver, Modem
OVERVIEW
Vio Vbat
Bluetooth
PCM BPF* UART
I2C Compatible FM Analog Audio
Handset Baseband
Ref_Clk, 32 kHz
Match
BCM2048
Clock_req
Host_Wake BT_Wake
FM IRQ Coexistence Rst* WLAN
www..com
* For cell phone applications only
BCM2048 Block Diagram The Broadcom BCM2048 is a monolithic 0.13 um single-chip Bluetooth(R) 2.0 +EDR compliant stand-alone baseband processor with an integrated 2.4-GHz transceiver, integrated FM and RDS/RBDS receiver, and an integrated FM baseband processor. It features the highest level of integration and eliminates all critical external components, thus minimizing the footprint and system cost of implementing a Bluetooth and FM solution. The BCM2048 is firmware upgradeable to future specifications. The BCM2048 is the optimal solution for any voice and/or data application that requires the Bluetooth SIG standard Host Controller Interface (HCI) via a high-speed UART and PCM. The BCM2048 incorporates all Bluetooth 2.0 +EDR features including eSCO, AFH, fast connect, all EDR packet types and lengths, and all errata. The BCM2048 also includes InConcert and other industry collaborative coexistence solutions with WLAN systems. The BCM2048 Bluetooth radio transceiver provides enhanced radio performance to meet the most stringent industrial temperature applications and the tightest integration into mobile handsets and portable devices. It is fully compatible with any of the standard TCXO frequencies and provides full radio compatibility to operate simultaneously with GPS and cellular radios. The BCM2048 also integrates a complete FM and RDS/RBDS solution. The integrated solution saves power, external BOM, board space, and maximizes interface flexibility over a separate Bluetooth and FM solution. The FM subsystem can operate independently of Bluetooth and achieve full performance while Bluetooth is operating. It is designed to cover from 76-MHz up to 108-MHz bands (US, Europe, Japan) and to operate from either the Bluetooth reference clock or a 32-kHz LPO input. The FM subsystem supports a conventional BSC-compatible interfaces and analog outputs for legacy systems, as well as digital interface options, such as I2S and PCM. The I2S and PCM interfaces supports 48kHz operation and can be either master or slave. The analog interface consists of high-quality line-level stereo DACs. The BCM2048 FM subsystem includes advanced RDS/RBDS capability. The BCM2048 synchronizes, demodulates, decodes RDS/ RBDS signals including CRC processing, post data filter detection, signal quality estimation, and buffering thus making it easy for an external application to read and process the RDS/RBDS data. The FM radio reception performance is very high with 1 uV for 26 dB (S+N)/N typical sensitivity and > 60 dB SNDR capability making it easier on system integration and antenna design. The FM subsystem includes many sought-after features including signal dependant mono/ stereo blend, soft mute, and signal bandwidth control. The system has digital RSSI, signal quality, and IF frequency error indicators for system monitoring. Embedded in the FM subsystem are auto search and scan features and large RDS data buffers to improve interface complexity with an external host. The block diagram above illustrates how the BCM2048 can be used in a cellular application.
Broadcom(R), the pulse logo, InConcertTM, Connecting everything(R), 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. Bluetooth(R) is a trademark of the Bluetooth SIG. Any other trademarks or trade names mentioned are the property of their respective owners.
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2006 by BROADCOM CORPORATION. All rights reserved. 2048-PB03-R 09/21/06
Phone: 949-450-8700 Fax: 949-450-8710 E-mail: info@broadcom.com Web: www.broadcom.com

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