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PDF EM8475 Data sheet ( Hoja de datos )
| Número de pieza | EM8475 | |
| Descripción | (EM8470 - EM8476) MPEG - 4 DECODER FOR SET-TOP DVD AND STREAMING APPLICATIONS | |
| Fabricantes | Sigma Designs | |
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Hay una vista previa y un enlace de descarga de EM8475 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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EM8470 EM8475
EM8471 EM8476
MPEG-4 Decoder for Set-top, DVD and Streaming Applications
Description
The EM847x family is a single-chip MPEG audio/video decoder that supports
DVD-Video, Superbit™ DVD, SVCD, VCD and audio CD media formats.
Video decoding support includes MPEG-1, MPEG-2 MP@ML and MPEG-4
advanced simple video profile Level 51. Audio decoding support includes
Dolby® Digital, MPEG-1 Layers 1 and 2, MPEG-4 high quality profile Level 2,
and 16-bit linear PCM. DVD-Video support includes hardware CSS decryp-
tion, 16:9 and 4:3 aspect ratios, letterboxing, 3:2 pull-down, multiple angles
and sub-picture.
Based on the company’s award-winning REALmagic® Video Streaming Tech-
nology, the EM847x family provides highly-integrated solutions for high-qual-
ity decoding of MPEG-1, MPEG-2 and MPEG-4. Positioned as a cost-
effective solution for streaming video clients, advanced digital set-top boxes
and next-generation interactive DVD players, the EM847x enables manufac-
turers to easily incorporate streaming video, progressive DVD playback and
video-on-demand into their products.
Common Features
• Pin and functionally compatible with EM8400
(EM8470 and EM8471 only)
• Compatible with MPEG-4 Client Players from
Envivio and iVAST and a wide variety of
MPEG-2 video servers
• Supports ISMA and MPEG-2 streaming
formats, IP multicasting
• Supports DVD-Video, Superbit DVD, SVCD,
VCD, audio CD media formats
• MPEG-1, MPEG-2 MP@ML, MPEG-4
Advanced Simple Profile Level 51 video
decoding
• Dolby Digital, MPEG-1 Layers 1 and 2, MPEG-
4 High Quality Profile Level 2, and linear PCM
audio decoding
Block Diagram
CCIR 601 / 656
8 / 16-BIT YC BCR
I2S
4 MB SDRAM
SDRAM CONTROLLER
AUDIO
VIDEO
INPUT
PORT
DVD
DECRYPT
MPEG
VIDEO
DECODER
ENGINE
AUDIO
DECODER
ENGINE
DISPLAY
CONTROL,
OSD,
SUB-
PICTURE
NTSC/PAL
ENCODER
VIDEO
DACS
AUDIO
DACS
LOCAL Bus
LOCAL BUS
CONTROLLER
PCI
HOST
INTERFACE
CVBS
S-VIDEO
ANALOG RGB / YP BPR
24-BIT RGB,
8 / 16-BIT YC BCR
STEREO AUDIO
I2S OR SPDIF
PCI Lightly shaded blocks are only available on the EM8475 and EM8476
1Without 1/4 pixel and global motion compensation
Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
www.DataSheet.in
1 page  
EM8470, EM8471, EM8475, EM8476
Alpha Blending
Alpha blending provides two layers of blending: sub-picture
over the MPEG video and OSD over both the sub-picture
and MPEG video. Up to 16 levels of blending are available.
Video Input and Output Interfaces
Video output ports provide digital RGB or YCbCr outputs and
include an integrated NTSC/PAL video encoder and video
DACs for composite, s-video and component analog outputs.
VBI Support
NTSC closed captioning on lines 21 and 284 is supported. In
addition, NTSC widescreen signaling (WSS) and copy gen-
eration management (CGMS-A) on lines 20 and 283, as
defined by IEC 61880, is supported. This information speci-
fies the aspect ratio of the current program and also provides
copy protection capabilities.
PAL widescreen signaling (WSS) on line 23, as defined by
ETSI EN300284 and ITU-R BT.1119, is supported. This infor-
mation specifies the aspect ratio of the current program.
Digital Video Output
The digital video output, controlled by the video display con-
troller, supports 8- / 16-bit CCIR 601 / 656 4:2:2 YCbCr data.
An additional 24-bit RGB output mode is supported on the
EM8475 and EM8476. It may be operated as a timing master
or slave at rates up to 80 MHz (160 MBps) and resolutions
up to 720p or 1080i.
The 24-bit RGB output mode supports HDCP (High-band-
width Digital Content Protection) when interfaced to a DVI
transmitter chip.
TV Encoder - Composite and S-Video Output
A high-quality NTSC/PAL encoder (with optional Macrovision
v7.1 protection) that supports the NTSC-M, NTSC-J, PAL-
B/D/G/H/I, PAL-60 and PAL-M baseband video standards is
available. It features three 10-bit video DACs to generate
simultaneous composite and s-video outputs. The analog
video outputs are capable of driving a doubly-terminated 75-
ohm load.
Component Analog Output
The EM8475 and EM8476 also include component YPbPr or
RGB analog outputs, with optional Macrovision AGC v1.03
protection in 480p YPbPr mode. This component analog out-
put can be programmed to be either RGB or YPbPr video
data, interlaced or progressive, from NTSC / PAL resolution
up to 1920x1080. The analog video outputs are capable of
driving a doubly-terminated 75-ohm load.
When generating analog RGB or YPbPr video, the compos-
ite video output is always present; the s-video output is not
available.
Supported analog formats are:
• RGB and composite video for SCART support
• RGB with sync on green
• SMPTE GBR
• Betacam YUV
• M-II YUV
• SMPTE YPbPr
If copy protection is used during DVD-Video playback, the
resolution on the EM8475 analog YPbPr / RGB outputs may
not be higher than standard definition (720x480 or 720x576)
unless driving a VGA monitor. If the output is configured to
be progressive YPbPr, only 480p video may be generated.
Digital Video Input
The video input port, available only on the EM8475 and
EM8476, is designed to capture video data in 8- / 16-bit
CCIR 601 / 656 YCbCr video data formats. The capture port
must operate in slave mode, synchronized to the input clock
and sync signals. The capture port is designed to support
video rates up to 80 MHz (160 MBps) and resolutions up to
720p or 1080i.
This input may be converted to progressive using either field
merging or scan line interpolation.
Note that only one video stream can be displayed at a time -
either MPEG video or input video.
www.DataSheet.in
Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
-5-
5 Page 
EM8470, EM8471, EM8475, EM8476
General Specifications (continued)
Host Interface
• PCI v2.1 with programmable burst length
Local Bus Interface
• PCI-to-Local Bus bridge
• 16-bit multiplexed address / data (Intel mode)
• 16-bit data and 8-bit address (generic mode)
• 16-bit data compressed
• Supports Stream Machine SM2210 / SM2288 MPEG encoder
Power Management
• 2.5V core with 3.3V I/O (5V tolerant)
• Typical power dissipation:
• Analog video outputs off: 1.2W
• Analog video outputs on: 1.4W
Package
• 208-pin PQFP for EM8470 and EM8471 (pin compatible with
EM8400)
• 328-pin BGA for EM8475 and EM8476
www.DataSheet.in
Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
- 11 -
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet EM8475.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EM8470 | (EM8470 - EM8476) MPEG - 4 DECODER FOR SET-TOP DVD AND STREAMING APPLICATIONS | Sigma Designs |
| EM8471 | (EM8470 - EM8476) MPEG - 4 DECODER FOR SET-TOP DVD AND STREAMING APPLICATIONS | Sigma Designs |
| EM8475 | (EM8470 - EM8476) MPEG - 4 DECODER FOR SET-TOP DVD AND STREAMING APPLICATIONS | Sigma Designs |
| EM8476 | (EM8470 - EM8476) MPEG - 4 DECODER FOR SET-TOP DVD AND STREAMING APPLICATIONS | Sigma Designs |
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