 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| BCM7040 PRODUCT (R) Brief ENCODER BENEFITS OF BCM7040 MPEG2 DIGITAL VIDEO/AUDIO SUMMARY BCM7040 FEATURES * Single-chip NTSC/PAL MPEG-2 encoding system * MP@ML MPEG-2 video encoder Fully integrated Encoder * and Video/AudioMPEG-2 DigitalaVideo/Audiodrastically Multiplexer in single chip * High-fidelity 24/56 bits programmable audio DSP * Variable resolutions: Horizontal: 720,704,640,544,480,360,320,160 Vertical: 480,240,112 (NTSC); 576,288,144 PAL * Variable frame rate, up to 30(NTSC)/25(PAL) fps * Supports constant/variable bit rates: 1-24 Mbps * Variable GOP length and structure: I, IP, IPB, IPBB * +/-100 pixels wide motion estimation search range * Automatic 3/2 pulldown detection * Video input: selectable 8/10 bits CCIR656 * 4:2:2 to 4:2:0 conversion * MPEG-1 Layer II stereo encoding * Dolby Digital (AC-3) stereo encoding * Programmable frequencies and bit rates (64-384 Kbps) * CBR/VBR program/transport stream multiplexing * User data/VBI insertion * Programmable stream parameters * * * * * * Highly programmable system multiplexing processor * Video pre-processing reduces overall system and development costs. Video/Audio Elementary, Video/Audio Packetized Elementary, Program, and Transport Streams are generated internally to the BCM7040. Broadcom third generation production of field-proven and in-production technology. Universal compatibility through standards compliance: Video Encoding (ISO/IEC 13818-2), Audio Encoding (ISO/IEC 11172-3, MPEG-1, Layer II and Dolby Digital AC-3) and System Multiplexing (ISO/IEC 13818-1). Broadcom-developed reference design kit includes application board, sample application, and drivers based upon industry-standard operating systems, enabling rapid and streamlined software and hardware development, reducing time to market. Simple system design: BCM7040 + single SDRAM. APPLICATIONS * Time shift/personal video recording (PVR): * DVD recorders * Digital VCRs (VCR replacements) * PC TV tuners * Digital camcorders * Video transmission * Video over IP * Video conferencing * Security and surveillance System Block Diagram Video A/D 2M x 32 SDRAM video/audio/PCR time * Accurate 27-MHz synchronization duringstamps for exact video/audio playback Dedicated * interface serial/parallel DVB transport stream * I S/AC-97 stereo audio inputs PCI 32 bit/33 * 16-bit GenericMHz, PCI DMA master or PCI slave and Host interface * Integrated I C controller * Package: 176-pin LQFP * Supply voltage: I/O 3.3V (5V compatible) * Power consumption: less than 1W * System memory: SDRAM, 1 module of 2M x 32 2 2 * 7-tap vertical/horizontal luminance/chrominance filter * Set-top boxes * Stand-alone PVRs * Television sets BCM7040 Audio A/D MPEG-2 Encoder Compressed data (DVB) output PCI/Generic interface BCM7040 OVERVIEW BCM7040 Block Diagram PCI/generic Global Controller SDRAM Interface SDRAM Controller CCIR656 Video Input Buffer Motion Estimator Signal Proc. Core RISC Signal Proc. Audio Proc. Multiplexer Video Bitstream Proc. Compressed Video/Audio Output Stream Audio In I2S/AC97 The BCM7040 is a highly integrated, single-chip NTSC/PAL MPEG-2 encoder system. Integrated features in the BCM7040 include an MPEG-2 video encoder, high-fidelity audio encoder DSP supporting both MPEG-1 layer II and Dolby digital AC-3 encoding and an adaptable system multiplexer capable of generating MPEG-2 program and transport streams. In addition, BCM7040 integrates a video pre-filtering module, I2C controller, dual PCI/Generic bus interfaces, I2S/AC-97 audio input interfaces, and a dedicated compressed data/DVB interface. CCIR-656 digital video is delivered to the BCM7040 video input and pre-filtering unit. The digital video is filtered, optionally decimated from Full D1 to lower resolutions, and passed to the video encoder. The video encoder supports bit rates of 1 Mbps up to 24 Mbps. The 100 pixels motion estimation, in combination with sophisticated scene complexity analysis algorithms, variably change the bit rate to ensure the best possible video quality, even in low video bit rates. Also supported are 3/2 pull-down detection, variable GOP structure, and VBI insertion. I2S/AC-97 digital audio is delivered to the BCM7040 audio DSP at a frequency of 32/44.1/48 KHz. The high-quality, 24/56-bit fixed-point DSP encodes the audio either in MPEG-1 layer II or in Dolby AC-3 format. The MPEG implementation supports bit rates of 64 kbps - 384 kbps. The AC-3 implementation conforms to the Dolby consumer class A encoder, including support for bit rates of 64 kbps - 448 kbps, and dynamic range compression. The compressed video and audio streams are delivered to a highly programmable multiplexing unit. The multiplexer combines the video and audio streams in the MPEG-2 program or MPEG-2 transport format. Various multiplexer parameters are configurable, including SID, PID, and user-defined PAT/PMT/SDT tables. In addition, multiplexing of external user data into the transport stream is supported. The compressed stream is delivered either to a dedicated DVB interface or to the PCI/generic host interface. Broadcom(R), the pulse logo and Connecting everything(R) are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks are the property of their respective owners. (R) BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 (c) 2003 by BROADCOM CORPORATION. All rights reserved. 7040-PB06-R-04.15.03 Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com |
Price & Availability of BCM7040
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |