VW2010 MPEG-1, -2, -4 Audio/Video CODEC ChipChip
Product Brief
The VW2010 is a real-time MPEG-1, -2 and -4 audio/video/system CODEC chip (simultaneous compression/ decompression, or encode/decode) that fully complies with ISO/IEC-11172-2, ISO/IEC13818-2, ISO/IEC-14496-2 and ITU-T H.263. The VW2010 accepts uncompressed ITU-R.BT-656 video and I2S audio, compresses the video into MPEG1, -2, -4 or H.263 formats, compresses the audio into MPEG-1, MPEG-2, MP3, AAC or AC-3 audio formats, and outputs them as transport streams for network applications or program streams for storage applications. In addition, the VW2010 accepts an MPEG bitstream input, and outputs ITU-R.BT-656 video. It also accepts an MPEG-1, MPEG-2, MP3, AAC or AC-3 audio bitstream input, and outputs audio through I2S, S/P-DIF or IEC-61937. • Dynamically adjustable controls • Fixed frame rates of 29.97 (NTSC) or 25 (PAL) frames per second, or variable frame rates in low delay mode • Constant or variable bit-rate from 22.5 Kb/s to 15 Mb/s • Horizontal resolution between 128 and 720 pixels in 16-pixel steps • Vertical resolution between 80 and 480 pixels (NTSC) or 576 pixels (PAL) in 16-pixel steps • Programmed GOP structure and length: I, IP, IBP and IBBP • Programmed low delay mode
Feature List
Video Encoding
• Support for MPEG-1 • Support for MPEG-2 MP@ML • Support for MPEG-4 Simple Profile @ L1, L2 and L3, with extensions to full D1 and interlaced video • Adaptive field/frame motion compensation and DCT type • 4:2:2 to 4:2:0 conversion • Scene change detection • Inverse telecine (3:2 pulldown) • Motion estimation search range +/127 pels horizontal and +/- 63 pels vertical, with half-pel accuracy • 8-tap horiz. filter and 4-tap vert. filter • Extraction of VBI data (including Close Captioned and NABTS data) from the ITU-R.BT-656 input • Support for private and user data insertions from VBI or host/PCI port
Audio Encoding
• MPEG-1 Layer I, II and III (MP3) • MPEG-2 Layer I and II • 2-channel down-mixed AAC • 2-channel down-mixed AC-3 • Sampling frequencies: 8, 16, 22.05, 24, 32, 44.1, 48 and 96 KHz. • Bits per channel: 16, 20, 24, 32
Multiplexing Input
• User data or VBI data insertion • Video and audio PES or ES
Output
• MPEG-1 System Stream • MPEG-2 PS or TS • MPEG-4 embedded in MPEG-2 TS • PES and ES output
Video Decoding
• MPEG-1, -2, -4 and H.263 decoding • 7-tap horiz. filter and 2-tap vert. filter • Letterbox conversion • 3:2 pulldown • Closed Captioning and Teletext
Audio Decoding
• MPEG-1 Layer I, II and III (MP3) • MPEG-2 Layer I and II • 2-channel down-mixed AAC • 2-channel down-mixed AC-3 • Sampling frequencies: 8, 16, 22.05, 24, 32, 44.1, 48 and 96 KHz. • Bits per channel: 16, 20, 24, 32 • For S/P-DIF, 32, 44.1 and 48 KHz at 32 bits
5300 Stevens Creek Blvd., Suite 450, San Jose, CA 95129 Tel:(408) 615-1888 URL: www.vwebcorp.com
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VW2010 MPEG-1, -2, -4 Audio/Video CODEC Chip
Demultiplexing Input
• System, program and transport stream
MPEG Bitstream Input (Decoder)
• 8-bit / 1-bit compressed data input interface (CDI) • Host/PCI interface
Output
• Program clock recovery (PCR) • 7 output buffers: 1 video, 4 audio, 1 PSI, 1 user (subtitle, Teletext)
A/V Output Interfaces Compressed Output (Encoder)
• 8-bit / 1-bit compressed data output interface (CDO) • Host/PCI interface
Graphics
• Background (solid color) plane • MPEG video plane • Two 32-bit ARGB (RGB with alphablending) or AYUV (YUV with alphablending) 8:8:8:8 graphics planes • Cursor plane • 2-, 4- or 8-bit color indexing • 0.5X or 2X vertical scaling; arbitrary horizontal scaling on 16-pixel boundaries (letterboxing, QSIF to SIF, SIF to D1, D1 to SIF, SIF to QSIF) • Per-pixel alpha-blending • Deflicker filter
Uncompressed Output (Decoder)
• Video: 8-bit ITU-R.BT-656 • Audio: one I2S, and one IEC-958 S/PDIF digital audio or IEC-61937 compressed audio • VBI, user data: • 1-bit (serial) bitstream using IDC or GPIO interface • Embedded in 8-bit video bitstream
• VCD, Super-VCD and DVD player and recorder • Cellular phones and PDAs In addition, the VW2010 is suited for the following network applications: • Streaming video distribution over DSL, cable, ethernet, fiber and wireless networks • Transcoding and transrating among MPEG-1, -2, - 4 and H.263 • Video conferencing • Security / surveillance • Video-on-demand servers
Features and Benefits
Saves money and power
• Uses less than 8 MB of external SDRAM • Uses 32-bit SDRAM interface • Proprietary motion estimation algorithm
General System Facts
• 162 MHz MIPS-like RISC processor with DSP extensions for multiplexing, demultiplexing, audio encoding and audio decoding • 365-pin PBGA package; physical dimensions: 27 mm by 27 mm • Input voltages: • 1.8 V internal • 3.3 V I/O • Estimated power consumption under 1.0 W in normal operating mode; onchip power management • Boundary scan and assembly testing compliant with IEEE 1149.1 (JTAG) and EPI EJTAG 2.0 (extended JTAG)
Decreases time to market
• Easy to setup and configure
Interfaces
Host Interfaces
• 8- or 16-bit Motorola-style interface, or • 16-bit Intel-style interface, or • PCI interface: 32 bits, 33 MHz.
Superior video quality
• The rate control algorithm monitors 60 different variables, which results in a more consistent GOP structure; thus, scene changes are handled well.
System Interfaces
• GPIO (general purpose input/output): 12 pins • IDC (inter-device communications, similar to Philips I2C) • SDRAM • 32-bit memory interface, using 1Mx165 or 2Mx32-5 SDRAM • Minimum SDRAM requirement: 4 MB for encoder, 4 MB for decoder
Superior flexibility
• Dynamically programmable frame rates, bit rates, resolution and low delay mode • Programmable GOP structure • Transcoding and transrating among MPEG-1, -2, - 4 and H.263
Applications
The VW2010 is ideally suited for the following consumer applications: • Camcorders and network cameras • Personal video recorder • Set-top boxes • PC capture devices for video capture, content creation, and display
Superior ingenuity
• MPEG-1, -2, -4 full-D1 interlaced encoder/decoder • Low latency support • MPEG-4 short header support (H.263 baseline support)
A/V Input Interfaces Uncompressed Input (Encoder)
• Video: 8-bit ITU-R.BT-656 • Audio: I2S (2 each) • VBI, user data: 8-bit video input
5300 Stevens Creek Blvd., Suite 450, San Jose, CA 95129 Tel:(408) 615-1888 URL: www.vwebcorp.com
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