BCM7040 FEATURES
2M x 32 SDRAM
Video A/D
Audio A/D
Compressed data
(DVB) output
PCI/Generic interface
BCM7040
MPEG-2 Encoder
System Block
Diagram
SUMMARY OF BENEFITS
BCM7040 MPEG2 DIGITAL VIDEO/AUDIO ENCODER
PRODUCTPRODUCT
BriefBrief
BCM7040
•
Single-chip NTSC/PAL MPEG-2 encoding system
•
MP@ML MPEG-2 video encoder
• 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
•
Accurate 27-MHz video/audio/PCR time stamps for
exact video/audio synchronization during playback
•
Dedicated serial/parallel DVB transport stream
interface
•
I
2
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
2
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
•
Fully integrated MPEG-2 Digital Video/Audio Encoder
and 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 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):
• 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
®