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PDF IBM39ENV420 Data sheet ( Hoja de datos )
| Número de pieza | IBM39ENV420 | |
| Descripción | (IBM39ENV420 / IBM39ENV422) eNV SD Digital Video Encoders | |
| Fabricantes | IBM | |
| Logotipo |  |
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Summary Data Sheet
Features
Profiles and standards
• 4:2:2 Profile at Main Level
• Main Profile at High Level
• Main profile at Main Level
• Simple Profile at Main Level
Image resolutions
• Up to 720x512x30 Fps NTSC
www.DataSheet4U.com• Up to 720x608x25 Fps PAL
Input image pre-processing
• Horizontal noise filter
• Vertical noise filter
• Temporal filter
• Supports horizontal image scaling
• Supports 4:2:2 to 4:2:0 chroma conversion
Compression Options
• 4:2:2 or 4:2:0 output chroma format
• Supports field or frame encoding
• Variable GOP structure
• External reference rate control
• Supports dynamically variable parameters
IBM39eNV422
IBM39eNV420
eNV SD Digital Video Encoders
• Supports MPEG-2 or ATSC user data insertion
• Minimum encoding latency
• Supports up to +/- 200H and +/- 128V search
range
• Programmable quantization tables
Output
• Selectable ES or PES output format
• Produces up to 50 Mbps
Memory
• Single SDRAM memory interface
• Requires a minimum 8 MB of 125 MHz SDRAM
• Supports 2 bank and 4 bank memory chips
Technology
• 3.3V and 2.5V power supplies
• 1.6W nominal power dissipation
• IBM CMOS SA-12E (0.18µm) process technol-
ogy
• 35 mm HPBGA package
Description
The IBM eNV SD video encoder chip offers flexibility
and provides a compact solution for your SD appli-
cation. The chip supports both MPEG-1 and MPEG-
2 real-time encoding. It handles multiple profiles and
levels including 4:2:2 Profile at Main Level and can
encode picture resolutions up to 720x512 and
720x608 in NTSC and PAL, respectively.
The architecture offers a wide range of capability to
encode SD images. The chip can compress images
into either MPEG-2 4:2:2 profile for professional
applications or Main profile for broadcast applica-
tions. It can deliver 4:2:2 or 4:2:0 chroma output for-
mat. The user can program a search range of up to
+/-200H and +/-128V based on their application
needs.
The chip outputs up to 50 Mbps with superior image
quality, making it desirable for high quality, high bit
rate solutions.
The programmable on-chip noise reduction filter
provides an effective solution to achieve the best
image quality at lower bit rates, making a highly
desirable choice for broadcast and distribution appli-
cations requiring VBR and statistical-multiplexing.
Dynamic changing of encoding parameters such as
GOP structure, bit rate control, and search range in
real time provides added flexibility to optimize pic-
ture quality at the available bandwidth.
eNVSD_sds_091301.fm.02
Sept. 13, 2001
Features
1 of 6
1 page  
Copyright and Disclaimer
© Copyright International Business Machines Corporation 2001.
IBM39eNV422
IBM39eNV420
eNV SD Digital Video Encoders
All Rights Reserved
Printed in the United States of America September, 2001
The following are trademarks of International Business Machines Corporation in the United States, or other countries, or
both:
IBM
www.DataSheet4U.com
IBM Logo
Other company, product, and service names may be trademarks or service marks of others.
All information contained in this document is subject to change without notice. The products described in this document
are NOT intended for use in implantation or other life support applications where malfunction may result in injury or death
to persons. The information contained in this document does not affect or change IBM's product specifications or warran-
ties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property
rights of IBM or third parties. All information contained in this document was obtained in specific environments, and is pre-
sented as an illustration. The results obtained in other operating environments may vary.
THE INFORMATION CONTAINED IN THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS. In no event will IBM be
liable for damages arising directly or indirectly from any use of the information contained in this document.
IBM Microelectronics Division
1580 Route 52, Bldg. 504
Hopewell Junction, NY 12533-6351
The IBM home page can be found at http://www.ibm.com
The IBM Microelectronics Division home page can be found at http://www.chips.ibm.com
eNVSD_sds_091301.fm.02
Sept. 13, 2001
eNVSD_sds_091301.fm.02
Sept. 13, 2001
Copyright and Disclaimer
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Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| IBM39ENV420 | (IBM39ENV420 / IBM39ENV422) eNV SD Digital Video Encoders | IBM |
| IBM39ENV422 | (IBM39ENV420 / IBM39ENV422) eNV SD Digital Video Encoders | IBM |
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