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| CS92288 PRODUCT BULLETIN MPEG-2 Audio/Video CODEC CS92288 Features Single Chip, real time MPEG-2 Audio/Video CODEC with system Mux/Demux and OSD Supports Real Time MPEG-1, MPEG-2 MP@ML, SP@ML, and MP@LL encoding and decoding Support for constant and one-pass variable bit rate IPB-pictures, CBR or VBR to 15 Mbps I-pictures only to 30 Mbps Supports Transport, Program, and Elementary streams Support for real time encoding and decoding of two-channel digital audio in either Dolby Digital or MPEG audio (Layer I, II, and III - MP3) Programmable system mux/demux supports VCD, SVCD and DVD encoding and decoding 8-bit OSD support (2-b text, 2-b to 8-b graphics) Supports multiple resolutions and scan rates Low external memory, e.g., NTSC: 8 Mbytes for full D1 (720) NTSC/PAL pictures Intel/Motorola 16-bit host interface Generic 8-bit interface for glue-less to multiple devices such as the Philips 7146 PCI Bridge, Philips TriMedia, and USB controllers Integrated programmable video pre & post processors Integrated I2C and I2S Interfaces 1.00 watts at 108 MHz average power consumption 272 BGA package Digital Audio In I2S Digital Audio Out Audio Interface Unit (AIU) Audio PLL Audio Engine Unit Host Interface Bit-stream/Control Host Interface Video Clock (27 MHz) Digital Video In CCIR-601/656 Digital Video Out Video Interface Unit (VIO) +1.8 +3.3 I2C I2C CTRL SYSCLK Video Engine PLL R-BUS D-BUS RISC microController (ARC) SDRAM Controller SDRAM Memory (108 MHz) Audio Clock Out The CS92288 is a single chip, real time MPEG-2 audio/video encoder/decoder (codec) with an integrated system multiplexor/demultiplexor and on-screen display (OSD) feature. The CS92288 codec encodes and decodes both ISO/IEC 13818 Main Level @ Main Profile (ML@MP), Simple Profile @ Main Level (SP@ML), Main Profile @ Low Level (MP@LL), and ISO/IEC 11172 (MPEG-1) video bitstreams as well as MPEG audio, and Dolby Digital (AC-3). In encode mode, the CS92288 produces MPEG-compliant audio and video elementary bit streams, program bit streams, as well as transport streams for broadcast and set-top box applications. For additional flexibility, the CS92288 accepts video in either the ITU-R BT.656 (CCIR-656) or ITU-R BT.601 (CCIR-601) format. Audio is input in the Linear PCM format. In decode mode, the CS92288 can accept MPEG transport streams, program bit streams, as well as audio and video elementary streams. Video can be output in either the CCIR-656 or 601 CCIR-601 format. Audio is output in the Linear PCM format. For applications requiring on screen displays, the CS92288 OSD feature supports both text and graphics. For more information, visit us at www.cirrus.com CS92288 Technical Overview The CS92288 combines a programmable RISC core, programmable DSP core, and dedicated processing units organized as a process pipeline. The RISC core supports system mux and demux requirements for a variety of system applications, including VCD, SVCD, and DVD. The DSP supports dual-channel Dolby Digital encoding and MPEG (all Layers) audio encoding and decoding. It is powerful enough to support additional audio formats, such as DTS or Dolby Pro Logic. Integrated I2S support allows for a glue-less interface to A/D and D/A converters. For communications applications, the CS92288 allows the host controller to make on-the-fly bit-rate changes without interrupting the audio/video stream flow. This allows for better bandwidth utilization. Internal rate control provides a high degree of flexibility in relation to the output bit rate, including the ability to generate variable bitrate compressed video stream in one pass. This makes it suitable for storage sensitive applications such as digital camcorders and removable storage media. Pre- and post-processing support includes pre- and postfiltering, temporal filtering, telecine (3:2 pulldown), inverse telecine, up and down chroma conversions. Key Feature Description Format Support The CS92288 supports all the requirements of the VCD and Super VCD specifications. This includes MPEG-1 and MPEG-2 encoding and decoding at 1/2 (VCD), 2/3 (SVCD), or full D1 (DVD) resolutions, MPEG audio encoding and decoding, and an OSD. In addition, the CS92288 supports audio/video encoding and decoding at full D1 resolution using either the Dolby Digital (AC-3) or MPEG audio specifications. Audio The CS92288 supports MPEG-1 and MPEG-2 (all layers), Dolby Digital, and MP3; however, additional audio compression and decompression algorithms can be supported via firmware upgrades. Input/Output The CS92288 can input or output MPEG-compliant program streams or audio and video elementary streams. Transport stream generation and decoding is also available via optional firmware upgrade. MPEG Video The CS92288 provides application program control over a large number of encoding parameters such as I, P, B-picture cadence, GOP structure and decoder buffer sizes. Cirrus Logic, Inc. Corporate Headquarters 4210 S. Industrial Drive Austin, TX 78744 USA T (512) 445-7222 T (800) 888-5016 F (512) 912-3977 www.cirrus.com WORLDWIDE DISTRIBUTION United States: Insight Electronics 9980 Huennekens San Diego, California 92121 T (800) 677-6011 F (858) 450-8550 www.insight-electronics.com Nu Horizons 70 Maxess Road Melville, New York 11747 T (631) 396-5000 F (631) 396-5060 www.nuhorizons.com Asia, Europe, and Japan: Please access our website, www.cirrus.com, for your nearest local distributor. WORLDWIDE SALES Regional Offices: United States Cirrus Logic, Inc. 46831 Lakeview Blvd Fremont, California 94538 T (510) 623-8300 F (510) 252-6020 Japan Cirrus Logic K.K. Aioi Sonpo, bldg 6F 5-6 Niban-cho, Chiyoda-ku Tokyo, Japan T 81-3-5226-7390 F 81-3-5226-7677 Asia Cirrus Logic Intl. Ltd. 20F., Ocean Building 80 Shanghai Street Kowloon, Hong Kong, China T 852-2376-0801 T 852-2314-9920 F 852-2375-1202 Europe Cirrus Logic UK 4-5 Anglers Court 33-44 Spittal Street Marlow, Bucks SL71DB England T 44-0-1628-472-211 F 44-0-1628-486-114 For more information, visit us at www.cirrus.com (c) 2001, Cirrus Logic, Inc. All rights reserved. Cirrus, Cirrus Logic, Crystal and Maverick are registered trademarks of Cirrus Logic, Inc. 0024-0102-PB |
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