ETC EM8400

EM8400
EM8401
MPEG-2 Decoder for Set-top, DVD and Streaming Applications
Description
Features
The EM8400 is a single-chip MPEG audio/video decoder that supports DVDVideo, SVCD, VCD 1.x, VCD 2.0, CD-DA and CD-ROM media formats, with
MPEG-1 and MPEG-2 [email protected] video decoding. Audio decoding support
includes Dolby® Digital, MPEG-1 Layers 1 and 2 and 16-bit linear PCM. DVDVideo support includes hardware CSS decryption, 16:9 and 4:3 aspect ratios,
letterboxing, 3:2 pull-down, multiple angles and sub-picture.
• Supports DVD-Video, SVCD, VCD 1.x, VCD
2.0, CD-DA, CD-ROM media formats
The programmable video output display controller includes high-quality arbitrary scaling and an OSD frame buffer with 16-level alpha blending. It supports interlaced or progressive output resolutions up to 1920x1080 with a
refresh rate up to 120 Hz. The provided brightness, contrast and color controls optimize displayed video.
• 2-, 4-, 7- or 8-bit OSD with optional run-length
compression and 16-level alpha blending
Based on the company’s award-winning REALmagic® Video Streaming Technology, the EM8400 provides highly-integrated solutions for high-quality
decoding of MPEG-1 and MPEG-2. Positioned as a cost-effective solution for
streaming video clients, advanced digital set-top boxes and next-generation
interactive DVD players, the EM8400 enables manufacturers to easily incorporate streaming video, progressive DVD playback and video-on-demand
into their products.
• MPEG-1, MPEG-2 [email protected] video decoding
• Dolby Digital, MPEG-1 Layers 1 and 2 and
linear PCM audio decoding
• Programmable display output with scaling up
to 1920x1080 resolution, interlaced or
progressive, up to 120 Hz refresh
Block Diagram
2 OR 4 MB SDRAM
SDRAM CONTROLLER
NTSC/PAL
ENCODER
DVD
DECRYPT
MPEG
VIDEO
DECODER
ENGINE
AUDIO
DECODER
ENGINE
DISPLAY
CONTROL ,
OSD,
SUBPICTURE
CVBS
S-VIDEO
8 / 16-BIT YC BCR
I2S OR SPDIF
PCI
HOST
INTERFACE
PCI
Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
EM8400, EM8401
Bitstream Demultiplexing
Features
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.
• 80 MHz digital video output interface: 8- or 16bit CCIR 601 / 656 YCbCr
Software drivers for the x86, available from Sigma Designs, include MPEG-2
transport and program stream demultiplex, MPEG-1 system stream demultiplex and DVD-Video/SVCD/VCD stream demultiplex and navigation. Supported operating systems for our x86-based reference designs include
Windows® XP Embedded, Windows CE .NET and Linux. For other operating
systems and hardware platforms, our Professional Services Group can assist
in supporting your requirements.
• NTSC/PAL composite and s-video outputs with
optional Macrovision v7.1 protection (10-bit
DACs)
• Digital audio output interface: I2S for PCM or
S/PDIF (IEC 60958) for PCM, compressed
Dolby Digital and compressed DTS
• PCI v2.1 bus master / slave interface supports
read operations
• 2.5V core with 3.3V I/O (5V tolerant) for low
power operation
DVD-Video Decryption
The EM8400 includes decryption logic and supports DVD-Video CSS procedural specifications. It also fully supports DVD-Video control features including 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:
• Package: 208 PQFP
Applications
• Consumer products needing playback of
video-on-demand (VOD), streaming video,
progressive DVD
• Set-top boxes, media/home gateways, video
end points, convergence appliances
• 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® digital output via S/PDIF
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 specification. The 256x Fs serial clock must be generated by an external clock
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 compressed Dolby Digital audio data. It then converts this data into a serial bitstream 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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Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
EM8400, EM8401
Video Display Controller
Pan and Scan Display
The display controller reads picture data from DRAM and
displays it with proper format, timing and synchronization signals. This is a real-time process driven by the video clock.
Pan and scan mode expands the video image to 16:9. A section of the image can be displayed at full height on a 4:3 TV
display.
The display controller operates in one of four modes:
• Master mode -- the display controller generates HSYNC and
VSYNC using an internal or external video clock up to 80
MHz
• Slave mode -- the display controller receives HSYNC and
VSYNC using an internal or external video clock up to 80
MHz
The video display timing can be set for interlaced or noninterlaced (progressive) video output up to 120 Hz.
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 Output Interfaces
Video output ports provide digital YCbCr outputs and include
an integrated NTSC/PAL video encoder and video DACs for
composite and s-video analog outputs.
Sub-Pictures
Sub-pictures are compressed bit maps overlaid on decoded
MPEG video which can be scrolled up and down and faded
in and out. The area, content, color and contrast in every
video field can be changed. These modifications produce
special effects such as highlighting.
OSD (On-Screen Display)
The OSD enables simple full screen graphical menus to be
displayed and blended with the MPEG decoded video and
sub-picture. It supports 4 palletized color depths: 4 colors (2
bits per pixel), 16 colors (4 bits per pixel), 128 colors (7 bits
per pixel) and 256 colors (8 bits per pixel). The bit map can
be compressed using Run-Length Coding (RLC) in 2-, 4- and
7-bit per pixel modes. A 256x32 color look-up table (CLUT) is
provided to convert the 2-, 4-, 7- or 8-bit code into a 24-bit
YCbCr color and 16 levels of alpha blending. The highlight
function is supported in 2-, 4- and 7-bit per pixel modes.
VBI Support
NTSC closed captioning on lines 21 and 284 is supported.
Digital Video Output
The digital video output, controlled by the video display controller, supports 8- / 16-bit CCIR 601 / 656 4:2:2 YCbCr data.
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.
TV Encoder - Composite and S-Video Output
A high-quality NTSC/PAL encoder (with optional Macrovision
v7.1 protection) that supports the NTSC, PAL, PAL-60 and
PAL-M video standards is available. It features three 10-bit
video DACs to generate simultaneous composite and svideo outputs. The analog video outputs are capable of driving a doubly-terminated 75-ohm load.
Letterbox Display
Letterbox mode provides vertical downscaling; 16:9 pictures
can be displayed in a letterbox fashion on a traditional 4:3
display.
Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
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EM8400, EM8401
PCI Host Interface
IP Multicasting Client Software
The PCI interface is the main conduit between the EM8400
and the host processor. It is designed for master reads and is
PCI v2.1 compliant. The PCI interface supports 3.3V and 5V
operation and ACPI power management from the PCI v2.2
specification.
IP multicasting client software for the x86 is available.
Memory Requirements
The mode of operation determines the amount of 100 MHz
SDRAM required as shown in Table 1.
Additional Software Available
VOD Client Software (MPEG-2)
VOD client software for the x86 is available that supports
select MPEG-2 video servers, including:
• Cisco's IPTV family
• Concurrent's MediaHawk
• InfoValue’s MediaQuick
• Kasenna’s MediaBase
• nCUBE's NVS
• Streaming21's Media Server
• Thirdspace’s OVS (Oracle Video Server)
For the latest list, please check with your local sales representative.
Minimum SDRAM Configuration
Mode of Operation
MPEG-2 interlaced SDTV output with no OSD
1M x 16
512K x 32
1M x 32
x
x
x
MPEG-2 interlaced SDTV output with OSD
x
x
MPEG-2 progressive SDTV output with no OSD
x
x
MPEG-2 progressive SDTV output with OSD
x
MPEG-2 HDTV digital output
x
Table 1. SDRAM Configurations.
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Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
EM8400, EM8401
Application Example: Streaming Set-top Box with DVD-Video Playback
The streaming set-top box example below also supports DVD-Video playback. System integration requires very little external
logic since the EM8400 provides most of the features including:
• Streaming video or video-on-demand (VOD) playback
• Progressive DVD-Video playback
• NTSC / PAL composite and s-video outputs
• S/PDIF audio output
SDRAM
2 OR 4 MB
NTSC / PAL C OMPOSITE AND S-VIDEO
VIDEO
DAC S
EM8400
ANALOG YP BPR OR RGB
SPDIF DIGITAL AUDIO OUTPUT
OR
EM8401
AUDIO
DAC S
ANALOG STEREO OUTPUT
SDRAM
AND
FLASH
HDD
CD / DVD D RIVE
HOST CPU
USB, I2C, RS-232
PCI BUS
IR
ETHERNET
10/100 T
V.34, V.9X MODEM
Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
-5-
EM8400, EM8401
Hardware vs. Software MPEG Decoding
Use hardware-based MPEG decoding when:
• Delivery of audio and video to a television is the primary function of the system. Standard consumer-oriented connectors
for audio and video must be used, instead of PC-oriented break-out cables and mini jacks. (Example: set-top box.)
• Home theater quality audio and video (such as 6-channel audio analog outputs, component YPbPr or RGB analog video
outputs and a SPDIF digital audio output) are required. Although specifications for audio and video solutions for the PC
market look good on paper, the products themselves rarely meet consumer expectations.
• A relatively slow CPU, such as an embedded processor, is used to lower system costs. Slower CPUs also reduce power
consumption and eliminate noisy fans. Decoding MPEG-4 requires a 1 GHz CPU, which is currently far too costly for lowcost set-top boxes to employ.
• Multiple video streams must be decoded simultaneously to support picture-in-picture (PIP).
• Ancillary data processing, such as copy protection, closed captioning (multiple languages), teletext (multiple languages),
v-chip (multiple regions) and widescreen signaling must be performed for each active video stream displayed. Widescreen processing must be able to handle anamorphic and letterboxed content for either 4:3 or 16:9 televisions. These
are typically overlooked in software-based solutions.
• Alpha blending is required when overlaying text and graphics (such as closed captioning, teletext, EPG, OSD, etc.) over
video to avoid artifacts (such as flicker) when displayed on a television. Such artifacts are caused by the limited-bandwidth video connection between the set-top box and television. It is typically implemented using anti-aliased fonts and
graphics.
• High quality video scaling is required for large television screen sizes. Artifacts not noticeable on a small VGA monitor
are magnified on a large television.
Use software-based MPEG decoding when:
• MPEG decoding is a secondary, rather than a primary function of the system. (Example: PC.)
• MPEG decoding is used in a single-tasking environment. Since MPEG decoding requires substantial CPU resources,
using other applications usually affects playback quality.
• A fast CPU is already available on the platform.
• Only standard stereo audio and video (composite or VGA) outputs are needed.
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Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
EM8400, EM8401
General Specifications
Media Formats
Audio Interfaces
• DVD-Video, SVCD, VCD 1.x, VCD 2.0, CD-DA, CD-ROM
• I2S serial digital output for PCM
• 15 Mbps sustained input data rate
• S/PDIF (IEC 60958) serial digital output for PCM, compressed
Dolby Digital and compressed DTS
Video Decoding Standards
• MPEG-1, MPEG-2 [email protected]
Host Interface
• PCI v2.1 bus master for reads
• DVD-Video
• CSS decryption
• 16:9 and 4:3 playback, letterbox, 3:2 pull-down
• Multiple angles and sub-picture
• DVD-Video navigation software
Power Management
• 2.5V core with 3.3V I/O (5V tolerant) provides low-power
operation
• Typical power dissipation:
• Analog video outputs off: 700 mW
Video Processing
• Analog video outputs on: 900 mW
• Brightness, color, contrast controls
• Advanced scaling up to 1920x1080 pixels
• Interlaced or non-interlaced output up to 120 Hz
• 2-, 4-, 7- or 8-bit OSD with optional run-length compression and
alpha blending
Package
• 208-pin PQFP
Video Interfaces
• 80 MHz 8- / 16-bit CCIR 656 / 601 YCbCr video output port
• NTSC/PAL composite and s-video analog outputs with optional
Macrovision v7.1 protection (10-bit DACs)
Audio Decoding Standards
• 16-bit linear PCM
• MPEG-1 Layers 1 and 2
• Dolby Digital down-mixed to 2 channels
Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
-7-
EM8400, EM8401
Product Selection Guide
EM84001
EM84012
Media Formats
DVD-Video, SVCD, VCD 1.x, VCD 2.0, CD-DA, CD-ROM
yes
yes
Video Decoding
MPEG-1, MPEG-2 [email protected]
yes
yes
Audio Decoding
Dolby Digital
MPEG-1 Layers 1 and 2
yes
yes
yes
yes
Digital Video Outputs
8- / 16-bit CCIR 601 / 656 YCbCr (80 MHz)
yes
yes
NTSC/PAL Composite and S-video Outputs
Macrovision v7.1 protection
yes
yes
yes
-
Audio Inputs and Outputs
I2S or S/PDIF digital output
yes
yes
Package
208 PQFP
208 PQFP
Power Supply
2.5v / 3.3v
2.5v / 3.3v
Feature
1May
be sampled or sold only to companies that are both Macrovision and Dolby licensed.
May be sampled or sold only to companies that are Dolby licensed.
2
Copyright © 2002 by Sigma Designs, Inc. All rights reserved. Sigma Designs, REALmagic and the REALmagic logo are either registered trademarks or trademarks
of Sigma Designs, Inc. in the United States and/or other countries. Manufactured under license from Dolby Laboratories and Macrovision. Dolby and the double-D
symbol are trademarks of Dolby Laboratories. All other trademarks or registered trademarks are the property of their respective owners.
Sigma Designs products are sold by description only. Sigma Designs reserves the right to make changes in circuit design and / or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Sigma Designs is believed to be
accurate and reliable. However, no responsibility is assumed by Sigma Designs or its subsidiaries for its use; nor for any infringements of patents or other rights of
third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Sigma Designs or its subsidiaries.
Sales Offices
UNITED STATES
CHINA
EUROPE
HONG KONG
Sigma Designs, Inc.
355 Fairview Way
Milpitas, CA 95035
+1 (408) 262-9003
+1 (408) 957-9740 FAX
Sigma Designs China
Room C1, 32F
Electronic Science & Technology Building (Phase 2)
30 Shennan Road Central
Shenzhen, PRC
Postcode 518031
+86 755 3683878
+86 755 3683873 FAX
Sigma Designs, Inc.
49, Rue des Moissonneurs
Brussels, Belgium 1040
+32 496.501234
+32 234.72260 FAX
Sigma Designs (Asia) Ltd.
Unit 1516, Tower 1, Metroplaza
223 Hing Fong Road
Kwai Fong, N.T.
Hong Kong
+852 2401 7388
+852 2610 2177 FAX
JAPAN
KOREA
TAIWAN
Sigma Designs Japan
4-16-8 Nakahara,
Mitaka-shi,
Tokyo 181-0005, Japan
+81 422 79 3067
+81 422 79 3067 FAX
Sigma Designs Korea
# 801, Dongil Techno Tower B/D
Kuro-dong, Kuro-gu,
Seoul, Korea
+82 11 288 0406
+82 2 3281 2034 FAX
Sigma Designs Taiwan
Far East World Center, C Tower
8F-8, No. 79, Sec. 1
Hsin Tai Wu Road
Hsichih, Taipei Hsien
Taiwan, R.O.C.
+886 2 2698 2066
+886 2 2698 2099 FAX
Sigma Designs, Inc.
355 Fairview Way • Milpitas, CA, USA 95035 • Tel: 408.262.9003 • Fax: 408.957.9740
www.sigmadesigns.com • [email protected]
Revision Date: March 12, 2002