应用与设计

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)。
详情介绍

概述

优势和特点

  • Library provides an inbuilt adaptive jitter buffer for re-sequencing and jitter abstraction
  • Supports encapsulation of telephony events into RTP packets
  • Supports telephony tones
  • Supports comfort noise
  • Supports redundant audio.
  • Library supports concurrent payloads
  • Target Processor: Code compatible across the Blackfin Processor Family ADSP-BF5xx
  • Release format: Object code module with C source wrapper
  • Input format: Packet or payload depending on parsing or assembling
  • Input buffer samples per block: User-configurable
  • Framework dependencies: None
  • Output format: Payload or packet depending on parsing or assembling
  • Sample Rate: 8 kHZ
  • Multi-threading: Fully re-entrant and multi-instancing capable

产品详情

The RTP/RTCP stack is widely used as the data transport protocol in real-time network services such as Voice over Internet Protocol (VoIP) applications. The use of the packet switched network for voice increases bandwidth utilization compared with the traditional connection-oriented approach and can lead to lower call costs. The nature of packet   switched networks can cause unpredictable and variable delays to speech packets, often resulting in poor unintelligible speech at the receiving end. The effect due to these delay variations or jitter can be minimized by using a Jitter Buffer, which imposes a certain delay to each packet before playing back the packet stream at a constant rate. The library provides an integrated jitter buffer to counter the same along with RTP/RTCP module.

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

 MIPS summary:

Code memory (KiB)
Data RAM (KiB)  Constant Data Tables (KiB)   MIPS Average
 11.533
 8.80
 0.06
 0.367

  • MIPS measured for specified payload using optimal memory layout running on a BF561 processor.
  • Code compatible across all BF5xx processors, with silicon anomaly workarounds implemented based on BF533 Silicon Revision 0.3 and later.
  • "Data RAM" for one instance, includes Scratch, Instance/State, Heap, Minimum Input and Output Single Buffers. The above measurement is with maxpool=1.
  • 1 KiB = 1024 Bytes.
  • BF533, BF561, BF518 and BF561 supported.

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.

相关硬件 (5)

EZ-Kits

  • 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
  • BF533-EZLITE
    ADSP-BF533 EZ-Kit Lite评估硬件为评估ADSP-BF531、ADSP-BF532和ADSP-BF533 Blackfin处理器系列提供低成本硬件解决方案。
  • 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。

Extender Boards

  • EVAL-USBLAN-EZEXT
    Blackfin USB-LAN EZ-Extender板是一款用于ADSP-BF533 EZ-KIT Lite、ADSP-BF537 EZ-KIT Lite和ADSP-BF561 EZ-KIT Lite的低成本、插入式扩展板。 该扩展板通过支持USB 2.0和10/100以太网,从而扩展Blackfin评估系统的功能。 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。
  • EVAL-BFAV-EZEXT
    Blackfin A-V扩展板是一款用于EZ-Board的低成本、插入式扩展板。 该扩展板通过提供音频和视频电路以及用于连接摄像机传感器评估板和平板显示器(FPD)模块的连接器,从而扩展Blackfin评估系统的功能。 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。