BOARDCOM BCM7040

BCM7040
PRODUCT
Brief
®
BCM7040
MPEG2
B C M 7 0 4 0
DIGITAL
• 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)
• 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
27-MHz video/audio/PCR time stamps for
• Accurate
exact video/audio synchronization during playback
Dedicated serial/parallel DVB transport stream
• interface
• I S/AC-97 stereo audio inputs
PCI 32 bit/33 MHz, PCI DMA master or PCI slave and
• 16-bit
Generic 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
S U M M A R Y
F E AT U R E S
• Single-chip NTSC/PAL MPEG-2 encoding system
• [email protected] MPEG-2 video encoder
2
VIDEO/AUDIO
O F
ENCODER
B E N E F I T S
Fully integrated MPEG-2 Digital Video/Audio Encoder
• and
Video/Audio Multiplexer in a single chip drastically
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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.
A P P L I C AT I O N S
• Time shift/personal video recording (PVR):
• Set-top boxes
• Stand-alone PVRs
• Television sets
• DVD recorders
• Digital VCRs (VCR replacements)
• 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