博通BCM21551单片3G手机解决方案

Broadcom(博通)公司的“单片3G手机”BCM21551将高速HSUPA 3G基带、多频带射频收发器、支持增强数据速率（EDR）技术的蓝牙2.1版、调频收音机接收器和调频收音机发射器（用于汽车立体声音乐播放）集于一身。该器件还具有先进的多媒体处理、支持高达500万像素相机以及带有“电视信号输出”端的每秒30帧视频功能，并且支持HSUPA、HSDPA、WCDMA和EDGE蜂窝协议。本文介绍了BCM21551的主要性能,方框图以及系统应用方框图.



手机功能的增强，如广泛的互联网应用和Web服务、多媒体功能、高分辨率视频和数码相机、游戏和音乐等，越来越需要蜂窝网络提高速度，同时也刺激了对可以利用高速蜂窝网络实现丰富多媒体功能的手机的需求。HSUPA常常被看作是终极蜂窝调制解调器技术。目前HSPA网络已经拥有9亿多用户，而且很多网络运营商正计划未来几年内在全球大规模部署HSUPA网络。有了采用Broadcom HSUPA处理器的手机，消费者就能直接用手机以高达7.2Mbps的速率下载内容，并以高达5.8Mbps的速率上传照片、视频等内容。HSUPA技术还有望实现质量高得多的“实时”视频会议和一系列令人振奋的服务和应用。

“单片3G手机”BCM21551将高速HSUPA 3G基带、多频带射频收发器、支持增强数据速率（EDR）技术的蓝牙2.1版、调频收音机接收器和调频收音机发射器（用于汽车立体声音乐播放）集于一身。该器件还具有先进的多媒体处理、支持高达500万像素相机以及带有“电视信号输出”端的每秒30帧视频功能，并且支持HSUPA、HSDPA、WCDMA和EDGE蜂窝协议。BCM21551还可以与其他Broadcom器件配合使用，如Wi-Fi和GPS器件、PMU或新的VideoCore III移动多媒体处理器。同类蜂窝基带芯片没有一个达到了这么高的集成度，高集成度既降低了成本和功耗、减小了尺寸，又可实现先进的功能。这使得BCM21551同时成为面向大众市场批量生产的3G手机和运行Symbian、Windows Mobile或Linux等开放操作系统的智能手机的理想选择。

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.



图2. BCM21551芯片方框图.

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(多媒体功能)
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(扩展的混合信号集成和先进的音频)
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(先进的技术)
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

主要优势:
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.



图3. BCM21551典型系统应用方框图