Broadcom(博通)公司的“單片3G手機”BCM21551將高速HSUPA 3G基帶、多頻帶射頻收發(fā)器、支持增強數(shù)據(jù)速率（EDR）技術的藍牙2.1版、調頻收音機接收器和調頻收音機發(fā)射器（用于汽車立體聲音樂播放）集于一身。該器件還具有先進的多媒體處理、支持高達500萬像素相機以及帶有“電視信號輸出”端的每秒30幀視頻功能，并且支持HSUPA、HSDPA、WCDMA和EDGE蜂窩協(xié)議。本文介紹了BCM21551的主要性能,方框圖以及系統(tǒng)應用方框圖.



手機功能的增強，如廣泛的互聯(lián)網(wǎng)應用和Web服務、多媒體功能、高分辨率視頻和數(shù)碼相機、游戲和音樂等，越來越需要蜂窩網(wǎng)絡提高速度，同時也刺激了對可以利用高速蜂窩網(wǎng)絡實現(xiàn)豐富多媒體功能的手機的需求。HSUPA常常被看作是終極蜂窩調制解調器技術。目前HSPA網(wǎng)絡已經擁有9億多用戶，而且很多網(wǎng)絡運營商正計劃未來幾年內在全球大規(guī)模部署HSUPA網(wǎng)絡。有了采用Broadcom HSUPA處理器的手機，消費者就能直接用手機以高達7.2Mbps的速率下載內容，并以高達5.8Mbps的速率上傳照片、視頻等內容。HSUPA技術還有望實現(xiàn)質量高得多的“實時”視頻會議和一系列令人振奮的服務和應用。

“單片3G手機”BCM21551將高速HSUPA 3G基帶、多頻帶射頻收發(fā)器、支持增強數(shù)據(jù)速率（EDR）技術的藍牙2.1版、調頻收音機接收器和調頻收音機發(fā)射器（用于汽車立體聲音樂播放）集于一身。該器件還具有先進的多媒體處理、支持高達500萬像素相機以及帶有“電視信號輸出”端的每秒30幀視頻功能，并且支持HSUPA、HSDPA、WCDMA和EDGE蜂窩協(xié)議。BCM21551還可以與其他Broadcom器件配合使用，如Wi-Fi和GPS器件、PMU或新的VideoCore III移動多媒體處理器。同類蜂窩基帶芯片沒有一個達到了這么高的集成度，高集成度既降低了成本和功耗、減小了尺寸，又可實現(xiàn)先進的功能。這使得BCM21551同時成為面向大眾市場批量生產的3G手機和運行Symbian、Windows Mobile或Linux等開放操作系統(tǒng)的智能手機的理想選擇。

The BCM21551 is an advanced single-chip 65-nm HSUPA/WCDMA/ EDGE SoC, with fully integrated 3G RF transceiver, BT, FM and mixed signal analog. Designed on 65-nm technology, the BCM21551 offers the lowest power consumption, highest integration, and lowest cost HSUPA solution. The modem supports HSUPA 5.8 Mbps, 7.2 Mbps HSDPA, WCDMA 384K with Class 33 EDGE modem and integrates all analog and digital functions on a single, monolithic piece of silicon for lowest cost. The integrated BCM21551 RF transceiver design delivers the highest RF performance while achieving the lowest power consumption through innovative architecture and circuit design. The RF transceiver draws upon Broadcoms extensive experience in pure digital CMOS radio design and directly leverages Broadcoms BCM2085 and BCM2090 CMOS radio products. Critical radio performance, while using pure digital CMOS for radios, is assured through the use of proprietary, autonomous, real-time calibrations within the radio. The BCM21551 cellular processor has fully integrated audio support for driving ear piece, ringer, stereo headsets and stereo line drivers for support of external Class D amplifiers for loudspeaker. External audio/video coprocessors are not required for the handset design. Broadcoms proprietary M-Stream high-performance modem technology and SAIC advanced signal processing technologies improve cellular handset reception and voice quality while increasing network capacity, without sacrificing call quality. The BCM21551 utilizes an advanced release 6 compliant direct Matrix inversion (DMI) equalizer for highest HSDPA data throughput in the most challenging radio conditions, thus offering high performance without the need for costly receiver diversity.

SECURITY
Enhanced security is provided with OTP and dedicated hardware blocks to provide secure Boot, memory and DRM functions. The embedded one-time programmable (OTP) bits allow the software to boot securely and check IMEI security prior to network activation. OTP bits can also be used by high-level applications to verify the integrity of Digital Rights Management (DRM) functions.



圖2. BCM21551芯片方框圖.

基本特性:
General Characteristics(通用特性)
Single-chip, single-die, HSUPA, WCDMA, EDGE SoC with integrated RF, BT, FM, multimedia acceleration, high-speed USB, full mixed signal audio and high-performance application CPU
Advanced release 6 compliant 7.2 Mbps HSDPA and 5.8 Mbps HSUPA modem
Utilizes the lowest cost, lowest power 65-nm digital CMOS process
Compact 14 mm x 14 mm 621-pin FBGA package with PoP for smallest size and low-cost PCB design
Multimedia Capabilities(多媒體功能)
5.0-Mpixel camera sensors with MIPI serial interface
30 fps full rate, H.264, MPEG4, H.263 and WMV9 at high quality VGA resolution
H.264 encode and decode for best quality and memory usage
Dual LCD support, up to 24M colors, with MIPI serial interface
64-tone polyphonic ringer•Digital audio mixing and 5-band equalizer
Support for advanced audio codecs: MP3, AAC, AAC+, eAAC, WMA, AMR-NB, and AMR-WB
Extensive Mixed-Signal Integration and Advanced Audio(擴展的混合信號集成和先進的音頻)
Integrated USBOTG HS (480 Mbps) and FS transceivers
Integrated amplifiers for stereo headset and earpiece with stereo line drivers for external Class D loudspeaker amplifiers
Integrated stereo DACs with >95-dB SNR
Integrated analog TV-out support (S-Video)
Integrated RF transciever
Integrated BT 2.1 and FM RX and TX
Advanced Technology(先進的技術)
Self-calibrating 2G and 3G transceiver automatically adjusts to changing conditions and compensates for manufacturing deviations
Broadcom® M-Stream technology delivers up to 3 dB better signal quality
SAIC support for voice and data

主要優(yōu)勢:
Enables the highest performance and lowest cost HSUPA/WCDMA/EDGE/GPRS handset design
Enables smallest and thinnest design via integrated multimedia, RF, BT, FM and mixed signal.
Lowest power consumption due to advanced 65-nm process and on-chip hardware acceleration architecture.
High performance 533-MHz ARM11™ processor for superfast applications computing speed.
Quad-band 2G and multiband 3G for worldwide coverage and roaming ability.

Powerful TeakLite®-III DSP with advanced audio processing including dual microphone noise cancellation, advanced NLP echo cancellation and wideband AMR codecs.

Extended coverage and fewer dropped calls using M-Stream, SAIC,and unique RF design.

Advanced HSDPA DMI equalizer, offering highest data throughput in mobility and fading conditions.

Highest quality audio and video capture and playback with H.264 VGA hardware support.
Fastest multimedia and data download using 480-Mbps USBOTG.
SD/MMC version 4.2 for support of external T-Flash/SD memory cards up to 32 GB.



圖3. BCM21551典型系統(tǒng)應用方框圖

詳情請見:

http:///collateral/pb/21551-PB01-R.pdf