em8401 ETC-unknow, em8401 Datasheet - Page 2

• Manufacturer Part Number: em8401
• Description: Mpeg-2 Decoder Set-top, Streaming Applications
• Manufacturer: ETC-unknow

Bitstream Demultiplexing
The host processor performs MPEG-2 transport and program stream and
MPEG-1 system stream demultiplexing. The EM8400 operates as a PCI bus
master while audio and video elementary streams are transferred from host
system memory to EM8400 memory by the EM8400’s DMA engine.
Software drivers for the x86, available from Sigma Designs, include MPEG-2
transport and program stream demultiplex, MPEG-1 system stream demulti-
plex and DVD-Video/SVCD/VCD stream demultiplex and navigation. Sup-
ported operating systems for our x86-based reference designs include
Windows
systems and hardware platforms, our Professional Services Group can assist
in supporting your requirements.
DVD-Video Decryption
The EM8400 includes decryption logic and supports DVD-Video CSS proce-
dural specifications. It also fully supports DVD-Video control features includ-
ing up to 8 language sound tracks, 32 subtitle settings, letterbox, pan and
scan, multi-angles and 3:2 pull-down.
Audio Output Interfaces
The audio decoding block supports the following audio bitstream formats:
I2S Digital Audio Output
The I2S serial audio output block receives either 2-channel down-mixed
decoded Dolby Digital audio, decoded MPEG-1 audio or PCM audio data. It
then converts this data into a serial bitstream compatible with the I2S specifi-
cation. The 256x F
source.
S/PDIF Digital Audio Output
In addition to receiving the same audio data as the I2S digital audio output
block, the S/PDIF output block can receive compressed DTS and com-
pressed Dolby Digital audio data. It then converts this data into a serial bit-
stream compatible with the S/PDIF specification.
Although both I2S and S/PDIF digital audio outputs are available, they are not
available simultaneously.
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• Dolby Digital with conformance to Group A (20-bit)
• MPEG-1 Layers 1 and 2
• 16-bit linear PCM data
• Compressed Dolby Digital and DTS
®
XP Embedded, Windows CE .NET and Linux. For other operating
s
serial clock must be generated by an external clock
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: [phone] • Fax: [phone]
®
www.sigmadesigns.com • [e-mail]
digital output via S/PDIF
Sigma Designs, Inc.
Features
• 80 MHz digital video output interface: 8- or 16-
• NTSC/PAL composite and s-video outputs with
• Digital audio output interface: I2S for PCM or
• PCI v2.1 bus master / slave interface supports
• 2.5V core with 3.3V I/O (5V tolerant) for low
• Package: 208 PQFP
Applications
• Consumer products needing playback of
• Set-top boxes, media/home gateways, video
bit CCIR 601 / 656 YCbCr
optional Macrovision v7.1 protection (10-bit
DACs)
S/PDIF (IEC 60958) for PCM, compressed
Dolby Digital and compressed DTS
read operations
power operation
video-on-demand (VOD), streaming video,
progressive DVD
end points, convergence appliances