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參數(shù)資料
| 型號(hào)： | AT76C3XX |
| 廠商： | Atmel Corp. |
| 英文描述： | A High-Performance Video Conferencing Accelerator(高性能視頻會(huì)議加速器) |
| 中文描述： | 一種高性能視頻會(huì)議加速器（高性能視頻會(huì)議加速器） |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 19K |
| 代理商： | AT76C3XX |
1
Features
Fully Compatible with the ITU Industry Standards H.263, G.723
The AT76C3XX is Highly Optimized for the Following Platforms:
– Videophones
– Set-top Boxes
– Personal Computer & Workstation
The Single Chip Video Conferencing Accelerator Integrates:
– Video Compression & Decompression
– Audio Compression & Decompression
– Acoustic Echo Cancellation
Generates up to 30 Frames Per Second @ QCIF Resolution
Accepts 16-bit Digital YUV Data (CCIR656)
– Direct Interface to NTSC/PAL Decoder
Outputs 8-bit Digital YUV Data (CCIR656)
– Displays Images at sQCIF, QCIF, CIF and Full Screen Resolutions
– Support Picture in Picture Display (PIP)
– Still Image Display Capability
Provides Direct Interface to Modem, Microcontroller
Full-color OSD Strip Buffer
Operates at 3.3 Volts with Standard 3/5V I/O
208-pin PQFP Package
Description
The AT76C3XX is a single chip solution which is fully compatible with the ITU’s indus-
try standards H.263 and G.723. These standards enable video conferencing over the
widely utilized twisted pair telephone lines. The AT76C3XX can be used to implement
video conferencing in various platforms such as: stand-alone units, set-top boxes, and
personal computers.
The AT76C3XX is a highly economical solution for the videoconferencing market that
also offers high performance while maintaining superior display quality.
To address market demands for economical solutions, the AT76C3XX integrates the
compression and decompression for the video and audio data, therefore requiring
minimal external components. To maintain low system cost, the AT76C3XX uses a
single 256K x 16 DRAM for its frame buffer. It interfaces directly to the digital camera
or NTSC/PAL decoder, NTSC/PAL encoder, audio codec, modem, and microcontrol-
ler.
To meet the high performance and display quality required, the AT76C3XX generates
and displays up to 30 frames per second. The chip integrates video post processing
with up to 4x zoom capability. The AT76C3XX is capable of displaying sQCIF, QCIF,
CIF and full screen resolution. It provides support for picture in picture (PIP), and still
image display modes.
VIDEO IN
IF/PIP
MEMORY
IF
SCALER
VIDEO OUT
MOTION
COMPENSATION
DCT/IDCT
Q/IQ
ENCODER
DECODER
BIT
STUFFING &
UNSTUFFING
B
C
AUDIO
IF
AUDIO
DSP
DATA
MEMORY
PROGRAM
MEMORY
MICROCONTROLLER
I/O REG
FILE
AT76C3XX
μ
C
BUS
DRAM
VIDEO
ENCODER
VIDEO
DECODER
AUDIO
CODEC
DSP
ROM
A High-
Performance
Video
Conferencing
Accelerator
AT76C3XX
Summary
A complete datasheet is
available under NDA.
Please contact:
Richard Bisset
Product Marketing Director
Tel: (919) 462-6542
Fax: (919) 462-0300
e-mail: rbisset@atmel.com
Rev. 1135AS–09/98
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| AT76C501 | Single-Chip Wireless LAN Media Access Controller(單芯片無線局域網(wǎng)媒體存取控制器) |
| AT76C502A | 11-megabit WLAN Media Access Controller MAC |
| AT76C503A | Universal Serial Bus 11-megabit WLAN Media Access Controller |
| AT76C504A | 802.11b Baseband and Media Access Controller (MAC) for PCMCIA Bus |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT76C502A | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:11-megabit WLAN Media Access Controller MAC |
| AT76C503A | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Universal Serial Bus 11-megabit WLAN Media Access Controller |
| AT76C504 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AT76C504 Summary [Updated 01/03. 3 Pages] A single-chip baseband controller that can handle IEEE 802.11b standard compliant data rates of up to 11 Mbps and provides all processing and functionality needed for the MAC protocol of IEE 802.11b. It provides a glueless interface confirming to PC Card 95 and can support a variety of RF interfaces. Complete available under Non-disclosure Agreement. |
| AT76C504A | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:802.11b Baseband and Media Access Controller (MAC) for PCMCIA Bus |
| AT76C505 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:802.11b Media Access Controller (MAC) and Baseband with USB Interface |
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