BCM7040
®
BCM7040 MPEG2 DIGITAL VIDEO/AUDIO ENCODER
SUMMARY OF BENEFITS
FEATURES
• Single-chip NTSC/PAL MPEG-2 encoding system
• MP@ML MPEG-2 video encoder
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• 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
High-fidelity 24/56 bits programmable audio DSP
• MPEG-1 Layer II stereo encoding
• Dolby Digital (AC-3) stereo encoding
• Programmable frequencies and bit rates (64–384 Kbps)Bullet
Highly programmable system multiplexing processor
• CBR/VBR program/transport stream multiplexing
• User data/VBI insertion
• Programmable stream parameters
Video pre-processing
• 7-tap vertical/horizontal luminance/chrominance filter
Accurate 27-MHz video/audio/PCR time stamps for exact
video/audio synchronization during playback
Dedicated serial/parallel DVB transport stream interface
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• I2S/AC-97 stereo audio inputs
• PCI 32 bit/33 MHz, PCI DMA master or PCI slave and 16-bit
Generic Host interface
• Integrated I2C 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
• Fully integrated MPEG-2 Digital Video/Audio Encoder and
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Video/Audio Multiplexer in a single chip drastically 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 inproduction 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 industrystandard 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):
• Set-top boxes
• Stand-alone PVRs
• Television sets
• DVD recorders
• Digital VCRs (VCR replacements)
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PC TV tuners
Digital camcorders
Video transmission
Video over IP
Video conferencing
Security and surveillance
System Block
Diagram
2M x 32 SDRAM
Video A/D
BCM7040
Audio A/D
MPEG-2 Encoder
Compressed data
(DVB) output
PCI/Generic interface
