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參數(shù)資料
| 型號： | TMS320AV110 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | MPEG Audio Decoder(MPEG音頻譯碼器) |
| 中文描述： | MPEG音頻解碼器（的MPEG音頻譯碼器） |
| 文件頁數(shù)： | 1/38頁 |
| 文件大小： | 796K |
| 代理商： | TMS320AV110 |
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TMS320AV110
MPEG AUDIO DECODER
SCSS013C – MAY 1993 – REVISED AUGUST 1995
Copyright
1995, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard
warranty. Production processing does not necessarily include testing of all
Single-Chip ISO-MPEG (Layers 1 and 2)
Audio Decoder
Decodes Mono, Dual, Stereo, and Joint
Stereo Modes
Supports All MPEG Sampling and Data
Rates, Including Free Format
Complete With Stereo Level Control
Input May Be MPEG Audio Frames or the
Full-Multiplexed MPEG System Stream
Accepts Compressed Audio at up to
15-Mbits/Second Burst Rate
Bit-Serial or Byte-Parallel Compressed Data
Input
16- or 18-Bit Serial PCM Output Directly
Interfaces to Most Serial D/A Converters
8-Bit Microprocessor Control Interface
Optional DRAM Interface for Audio Delay
and More Robust Error Concealment
Low-Power Submicron CMOS Technology,
Fully TTL Compatible
Small Footprint 120-Pin Plastic Quad Flat
Package
IEEE Standard 1149.1 (JTAG) Compatible
description
The Texas Instruments TMS320AV110 MPEG audio decoder implements in a single chip, the International
Standards Organization — Moving Picture Expert Group (ISO-MPEG) audio decompression algorithm. The
’AV110 accepts an MPEG-compliant compressed audio stream at any of the valid MPEG data and sampling
rates and produces decompressed 2s complement audio output in either 16- or 18-bit serial pulse-code
modulation (PCM) format. The PCM data stream is suitable for direct input to most commercially available
digital-to-analog (D/A) converters.
Both MPEG layers one and two are implemented. The ’AV110 decodes a single monaural channel, two
independent mono channels, stereo channels, and joint stereo channels. The compressed audio may be input
either as MPEG audio frames or as the full-multiplexed system stream containing multiple audio and/or video
packets. The input may be at the actual bit rate or it may be in bursts at up to 15 Mbits/s.
Compressed audio may be input in either bit-serial or byte-parallel formats. An eight-bit microprocessor
interface is provided for control and status register access with maskable interrupts for the critical status and
error flag registers.
While the ’AV110 can operate as a single, stand-alone decoder, provision is also made for using a 256K
×
4
DRAM device if buffering of the audio stream is required. With the external memory in place, audio may be
buffered for synchronization purposes. The external memory also allows the employment of more robust
error-concealment techniques if cyclic redundancy check (CRC) or synchronization errors are detected by the
decoder.
The TMS320AV110 is implemented in the Texas Instruments EPIC
CMOS submicron, triple-level-metal
technology.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC is a trademark of Texas Instruments Incorporated.
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