BCM7040 Broadcom Corporation, BCM7040 Datasheet

BCM7040

Manufacturer Part Number

BCM7040

Description

Manufacturer

Broadcom Corporation

Datasheet

1.BCM7040.pdf (1 pages)

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BCM7040

•

Video pre-processing

Accurate 27-MHz video/audio/PCR time stamps for

Single-chip NTSC/PAL MPEG-2 encoding system

MP@ML MPEG-2 video encoder

• Variable resolutions:

• 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

• 7-tap vertical/horizontal luminance/chrominance filter

exact video/audio synchronization during playback

Dedicated serial/parallel DVB transport stream

interface

PCI 32 bit/33 MHz, PCI DMA master or PCI slave and

16-bit Generic Host interface

Integrated I

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

S/AC-97 stereo audio inputs

Horizontal: 720,704,640,544,480,360,320,160

Vertical: 480,240,112 (NTSC); 576,288,144 PAL

B C M 7 0 4 0

C controller

MPEG2

F E A T U R E S

DIGITAL

PRODUCT

•

VIDEO/AUDIO

Video/Audio Elementary, Video/Audio Packetized

Fully integrated MPEG-2 Digital Video/Audio Encoder

and Video/Audio Multiplexer in a single chip drastically

reduces overall system and development costs.

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.

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

Video A/D

Audio A/D

S U M M A R Y

Diagram

Brief

BCM7040

A P P L I C A T I O N S

BCM7040

MPEG-2 Encoder

2M x 32 SDRAM

O F

PCI/Generic interface

B E N E F I T S

ENCODER

Compressed data

(DVB) output

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