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IBM39eNV422
IBM39eNV420
Summary Data Sheet
Features
eNV SD Digital Video Encoders
Profiles and standards
• Supports MPEG-2 or ATSC user data insertion
• Minimum encoding latency
• Supports up to +/- 200H and +/- 128V search
range
• 4:2:2 Profile at Main Level
• Main Profile at High Level
• Main profile at Main Level
• Simple Profile at Main Level
• Programmable quantization tables
Image resolutions
Output
• Up to 720x512x30 Fps NTSC
• Up to 720x608x25 Fps PAL
• Selectable ES or PES output format
• Produces up to 50 Mbps
Input image pre-processing
• Horizontal noise filter
• Vertical noise filter
Memory
• Single SDRAM memory interface
• Requires a minimum 8 MB of 125 MHz SDRAM
• Supports 2 bank and 4 bank memory chips
• Temporal filter
• Supports horizontal image scaling
• Supports 4:2:2 to 4:2:0 chroma conversion
Technology
• 3.3V and 2.5V power supplies
• 1.6W nominal power dissipation
• IBM CMOS SA-12E (0.18µm) process technol-
ogy
Compression Options
• 4:2:2 or 4:2:0 output chroma format
• Supports field or frame encoding
• Variable GOP structure
• 35 mm HPBGA package
• External reference rate control
• Supports dynamically variable parameters
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 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.
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.
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
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