B C M 7 0 4 0 F E A T U R E S
2M x 32 SDRAM
Video A/D
Audio A/D
Compressed data
(DVB) output
PCI/Generic interface
BCM7040
MPEG-2 Encoder
System Block
Diagram
S U M M A R Y O F B E N E F I T S
B C M 7 0 4 0 M P E G 2 D I G I TA L V I D E O / A U D I O E N C O D E R
PRODUCT
PRODUCT
Brief
Brief
B C M 7 0 4 0
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: 124 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 (64384 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.
A P P L I C A T 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
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