应用与设计

CN0352

高性价比多通道锂离子电池测试系统
详情介绍

概述

优势和特点

  • Transport Stream: Raw MPEG-1/2 audio bit stream
  • Output Status: Frame information such as sample rate, average & maximum bit rates
  • Fast Forward / Rewind: The decoder provides 'hooks' to seek forward or backward to desired position in CBR or VBR streams
  • Extended Test Vector Testing: Compliant with ISO/IEC test vectors and additional test vectors generated using several different encoders
  • Error Codes: Reports up to 5 unique high level error codes. Such as invalid, or non-supported streams
  • Support for Layer 1, Layer 2 and Layer 3
  • Conformance Standard: International Standard ISO/IEC 11172-4 Part 4, 1992, & ISO/IEC 13818-4 Part 4 Compliance Testing 1994
  • Reference Code Revision: ISO/IEC Reference Code 11172-3, MPEG1 MP3, 1993 & ISO/IEC 13818-3, MPEG2 MP3, 1998, Part 3: Audio
  • Framework dependencies: None
  • Release format: Object code module with C interface
  • Input format: Supports bit streams compliant with MPEG1, MPEG2 and (non-official) MPEG2.5, L1/L2/L3. CBR, VBR and (non-official) ABR. Mono, Stereo, Dual Channel and Joint Stereo
  • Output format: Supports up to two channels (Stereo) Interleaved 16-bit PCM (left, right, left, right ...). Only 16-bit PCM output is supported
  • Output buffer samples per block: 1152 samples/channel for MPEG-1; 576 samples/channel for MPEG-2
  • Sample Rate: All sampling frequencies specified by MPEG1 L1/L2/L3 (32, 44.1 and 48kHz); MPEG2 L1/L2/L3 (16kHz, 22.05kHz and 24kHz) and MPEG2.5 L3 (8kHz, 11.025kHz, and 12kHz)
  • Bit Rate: 32-448 kbit/sec for MPEG1 L1, 32-384 kbit/sec for L2 and 32–320kbit/sec for L3. MPEG2 & MPEG2.5, 8 – 160 kbit/s L1/L2/L3
  • Multi-channel: Fully re-entrant and multi-instancing capable
  • Returns ancillary data (Optional)

产品详情

MP3 Decoder (with Layer 1 & 2 support) is a popular 'lossy' decoder used to greatly reduce audio file sizes, while retaining high levels of audio quality faithful to the original uncompressed version. MP3 decoder (with Layer 1&2 support) supports three layers. MPEG-1/2 audio layer 3(MP3) is one of the most popular in PC and internet applications. MPEG-1/2 audio Layer 2(MP2) is used in TV broadcasting and Video CDs.

In addition to MPEG-1/2, there is a non-standard version widely known as ‘MPEG2.5', which supports additional sampling rates. Refer below for additional information.

下载及相关软件

Software Development Tools

CrossCore Embedded Studio

CrossCore Embedded Studio是针对Blackfin和SHARC处理器系列的世界一流集成开发环境(IDE)。

VisualDSP++ 5.1

用于Blackfin、SHARC和TigerSHARC处理器的VisualDSP++是一种易于安装、易于使用的集成软件开发与调试环境(IDDE),支持通过单一界面高效管理项目的全过程。

许可

Each module supports the Analog Devices, Inc. (ADI) Blackfin or SHARC Processor family and is a licensed product that is available in object code format. Recipients must sign or accept a license agreement with ADI prior to being shipped or downloading the modules identified in the license agreement.

性能指标

MIP Summary:
Code RAM (KiB)  Data RAM (KiB)  Constant Data Tables (KiB)
 MIPS
 ADSP-BF533
 ADSP-BF609
 ADSP-BF527
 Average
 Peak Averaged
 Average
 Peak Averaged
 Average
 Peak Averaged
 34.1 28.2   20.8
 19.0
 20.8
 18.7
 19.2
 18.4
 19.0


  • This table highlights example Blackfin processors and expected MIPS performance using optimal memory layout. The BF609 processor includes additional L2 on-chip memory which can help reduce MIPS when fully utilized. Similarly, processors with higher bandwidth external memory interfaces (32-bit versus 16-bit and DDR versus SDRAM) will also help reduce overall MIPS requirements
  • MIPS measured using Microsoft test vectors at a constant bit rate of 128kpbs, 48 kHz sampling rate, optimal memory layout, worst case test vector, running on ADSP-BF533/527/609.
  • BF609 Core Clock = 500 MHz, System Clock = 250 MHz, Dynamic Mem Clock = 250 MHz; BF533 Core Clock = 594 MHz, System Clock = 119 MHz; BF527 Core Clock = 400 MHz, System Clock = 133 MHz.
  • "Data RAM" for one instance, includes Stack, Scratch, Minimum Input and Output Single Buffers.
  • 1 KiB = 1024 Bytes.
  • NOTE: Peak Averaged MIPS is the maximum averaged MIPS over a period of 100ms.


系统要求

  • Windows XP Professional SP3 (32-bit only).
  • Windows Vista Business/Enterprise/Ultimate SP2 (32-bit only). It is recommended to install the software in a non-UAC-protected location.
  • Windows 7 Professional/Enterprise/Ultimate (32 and 64-bit). It is recommended to install the software in a non-UAC-protected location.
  • Minimum of 2 GHz single core processor, 3.3 GHz dual core is recommended.
  • Minimum of 1 GB memory (RAM), 4 GB is recommended.
  • Minimum of 2 GB hard disk (HDD) space is required.
  • CrossCore Embedded Studio for Analog Devices Processors.

相关硬件 (5)

EZ-Kits

  • BF527-EZLITE
    ADSP-BF527F EZ-Kit Lite评估硬件为评估ADSP-BF52x Blackfin处理器系列提供低成本硬件解决方案。
  • BF548-EZLITE
    面向ADSP-BF54x Blackfin系列的ADSP-BF548 EZ-KIT Lite®评估套件
  • EVAL-BF609-EZ
    ADSP-BF609 EZ-Board评估硬件为评估ADSP-BF60x Blackfin处理器系列提供低成本硬件解决方案。
  • BF518F-EZLITE
    面向ADSP-BF512/F、BF514/F、BF516/F、BF518/F BLACKFIN处理器的ADSP-BF518F EZ-KIT LITE评估套件

Extender Boards

  • EVAL-BFEXT-AUDEI3
    音频EI3扩展板是一款用于EZ-Board的低成本、插入式扩展板,支持扩展接口3 (EI3)规格。 该扩展板支持评估SigmaDSP立体声24位音频编解码器和集成ADI公司嵌入式处理器的MEM数字麦克风。 有关兼容EZ-Board产品的信息,请参见处理器系列软件和工具页面。