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Extension 79

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  • thank you very muchn it is a SC32440 extension board

    thank you very muchn it is a SC32440 extension board

    /dl/492153.html

    标签: extension thank muchn 32440

    上传时间: 2017-09-20

    上传用户:lingzhichao

  • this file is a tcl extension

    this file is a tcl extension

    /dl/493162.html

    标签: extension this file tcl

    上传时间: 2013-12-24

    上传用户:yuchunhai1990

  • 单片机P0口的片外数据存储器扩展

    单片机作为一种微型计算机,其内部具有一定的存储单元(8031除外),但由于其内部存储单元及端口有限,很多情况下难以满足实际需求。为此介绍一种新的扩展方法,将数据线与地址线合并使用,通过软件控制的方法实现数据线与地址线功能的分时转换,数据线不仅用于传送数据信号,还可作为地址线、控制线,用于传送地址信号和控 ...

    /dl/29174.html

    标签: 单片机 P0口 数据存储器 扩展

    上传时间: 2014-12-26

    上传用户:adada

  • 基于8051F330的音频信号发生器的设计

     MMC/SD卡以其优越的性能,在单片机嵌入式设备中得到广泛应用。将MMC/SD卡作为外部掉电存储介质应用于音频信号发生器中,通过8051F330单片机上的SPI接口,实现单片机—MMC/SD卡的存储扩展,设计了此硬件平台上的MMC/SD卡的单片机驱动程序,并给出了相应的程序代码,满足音频信号发生器的大容量存储要求。 Abstract: ...

    /dl/29309.html

    标签: 8051F330 音频信号 发生器

    上传时间: 2014-12-27

    上传用户:黄华强

  • 基于MPC555与CS8900A的以太网扩展设计

       介绍了MPC555与CS8900A扩展以太网的硬件设计图。以NUCLUES PLUS操作系统为基础,介绍了网卡软件驱动程序的编制,给出了以太网协议包嵌入NUCLEUS PLUS操作系统的实现方法。 Abstract:  The Ethernet extension hardware design of MPC555 and CS8900A are introduced,and the software driven program ...

    /dl/29326.html

    标签: 8900A 8900 MPC 555

    上传时间: 2013-10-23

    上传用户:xiehao13

  • PCA9516 5channel I2C hub

    The PCA9516 is a BiCMOS integrated circuit intended forapplication in I2C and SMBus systems.While retaining all the operating modes and features of the I2Csystem, it permits extension of the I2C-bus by buffering both the data(SDA) and the clock (SCL) lines, thus enabling five buses of 400 pF.The I2C ...

    /dl/30984.html

    标签: 5channel 9516 PCA I2C

    上传时间: 2013-11-21

    上传用户:q123321

  • PCA9517 Level translating I2C-

    The PCA9517 is a CMOS integrated circuit that provides level shifting between lowvoltage (down to 0.9 V) and higher voltage (2.7 V to 5.5 V) I2C-bus or SMBus applications.While retaining all the operating modes and features of the I2C-bus system during thelevel shifts, it also permits extension of t ...

    /dl/30990.html

    标签: translating Level 9517 PCA

    上传时间: 2013-12-25

    上传用户:wsf950131

  • PCA9518 Expandable 5channel I2

    The PCA9518 is a BiCMOS integrated circuit intended forapplication in I2C and SMBus systems.While retaining all the operating modes and features of the I2Csystem, it permits extension of the I2C-bus by buffering both thedata (SDA) and the clock (SCL) lines, thus enabling virtuallyunlimited buses of ...

    /dl/30996.html

    标签: Expandable 5channel 9518 PCA

    上传时间: 2013-10-23

    上传用户:dumplin9

  • PCA9519 4channel level transla

    The PCA9519 is a 4-channel level translating I2C-bus/SMBus repeater that enables theprocessor low voltage 2-wire serial bus to interface with standard I2C-bus or SMBus I/O.While retaining all the operating modes and features of the I2C-bus system during thelevel shifts, it also permits extension of ...

    /dl/31002.html

    标签: 4channel transla level 9519

    上传时间: 2013-11-19

    上传用户:jisiwole

  • 基于码本映射的语音带宽扩展算法研究

    在现代通信系统中,电话语音的频带被限制在300 Hz~4 kHz的范围内,带来了语音可懂度和自然度的降低。为了在不增加额外成本的前提下提高语音的可懂度和自然度,进行了电话语音频带扩展的研究。提出了一种改进的基于码本映射的语音带宽扩展算法:在码本映射的过程中,使用加权系数来得到映射码本。客观测试结果表明,用此算 ...

    /dl/33807.html

    标签: 映射 带宽 扩展 语音

    上传时间: 2014-12-29

    上传用户:15501536189