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Bidirectional

單纖雙向即BiDi(Bidirectional),是指在一根光纖里可以同時(shí)傳輸收發(fā)兩個(gè)方向的光信號(hào),就象馬路上由隔離帶隔開的正反兩個(gè)方向的車道,兩邊的車輛在各自的車道上行駛,互不干擾。而常規(guī)的光纖傳輸是單纖單向的,這樣要實(shí)現(xiàn)雙向的通信就需要兩根光纖。相比較而言,單纖雙向技術(shù)只使用一根光纖就完成了原來(lái)兩根光纖才能完成的工作,將現(xiàn)有光纖的傳輸量提高了一倍,從而大大節(jié)省了光纖資源。
  • SL811開發(fā)資料_包含源程序_電路圖_芯片資料

    SL811開發(fā)資料_包含源程序_電路圖_芯片資料:SL811HS Embedded USB Host/Slave Controller.The SL811HS is an Embedded USB Host/Slave Controller capable of communicate with either full-speed or low-speed USB peripherals. The SL811HS can interface to devices such as microprocessors, microcontrollers, DSPs, or directly to a variety of buses such as ISA, PCMCIA, and others. The SL811HS USB Host Controller conforms to USB Specification 1.1.The SL811HS USB Host/Slave Controller incorporates USB Serial Interface functionality along with internal full-/low-speed transceivers.The SL811HS supports and operates in USB full-speed mode at 12 Mbps, or at low-speed 1.5-Mbps mode.The SL811HS data port and microprocessor interface provide an 8-bit data path I/O or DMA Bidirectional, with interrupt support to allow easy interface to standard microprocessors or microcontrollers such as Motorola or Intel CPUs and many others. Internally,the SL811HS contains a 256-byte RAM data buffer which is used for control registers and data buffer.The available package types offered are a 28-pin PLCC (SL811HS) and a 48-pin TQFP package (SL811HST-AC). Both packages operate at 3.3 VDC. The I/O interface logic is 5V-tolerant.

    標(biāo)簽: 811 SL 開發(fā)資料 源程序

    上傳時(shí)間: 2013-12-22

    上傳用戶:a82531317

  • This gives examples of Session Description Protocol (SDP) offer/answer exchanges. Examples include

    This gives examples of Session Description Protocol (SDP) offer/answer exchanges. Examples include codec negotiation and selection, hold and resume, and addition and deletion of media streams. The examples show multiple media types, Bidirectional, unidirectional, inactive streams, and dynamic payload types. Common Third Party Call Control (3pcc) examples are also given.

    標(biāo)簽: Description exchanges Protocol Examples

    上傳時(shí)間: 2014-01-02

    上傳用戶:450976175

  • 計(jì)數(shù)器 鎖存器 12位寄存器 帶load

    計(jì)數(shù)器 鎖存器 12位寄存器 帶load,clr等功能的寄存器 雙向腳(clocked Bidirectional pin) 一個(gè)簡(jiǎn)單的狀態(tài)機(jī) 一個(gè)同步狀態(tài)機(jī) 用狀態(tài)機(jī)設(shè)計(jì)的交通燈控制器 數(shù)據(jù)接口 一個(gè)簡(jiǎn)單的UART 測(cè)試向量(Test Bench)舉例: 加法器源程序 相應(yīng)加法器的測(cè)試向量test bench)

    標(biāo)簽: load 計(jì)數(shù)器 位寄存器 鎖存器

    上傳時(shí)間: 2014-01-16

    上傳用戶:bjgaofei

  • HDFDUMP and BRFDUMP are utility programs developed for use with MISR data files. HDFDUMP will ext

    HDFDUMP and BRFDUMP are utility programs developed for use with MISR data files. HDFDUMP will extract data from a MISR file in the HDF-EOS grid format (MISR Level 1B2 and Level 2 files) and writes unformatted binary files. BRFDUMP calculates radiances and Bidirectional reflectance factors (BRF) from MISR Level 1B2 files and creates unformatted binary files.

    標(biāo)簽: HDFDUMP developed programs BRFDUMP

    上傳時(shí)間: 2017-04-02

    上傳用戶:yy541071797

  • 高精度雙向DC電源電流采樣電路設(shè)計(jì)

    為適應(yīng)雙向DC/DC功率變換的電流采樣需求,一種高精度高邊電流采樣電路被提出。其基本思想是在功率電路的高邊串入采樣電阻,借助電流鏡原理并引入偏置電流電路,將雙向電流均轉(zhuǎn)換為正向電壓輸出。通過(guò)理論分析與仿真結(jié)合的方法對(duì)電流鏡采樣原理及4種不同的偏置電流電路方案進(jìn)行對(duì)比,最后通過(guò)實(shí)驗(yàn)數(shù)據(jù)驗(yàn)證了高精度高邊電流采樣電路的有效性。實(shí)驗(yàn)數(shù)據(jù)表明,該采樣電路可在-25~75℃的溫度工作范圍內(nèi),針對(duì)-10~+10 A范圍內(nèi)的電流采樣實(shí)現(xiàn)優(yōu)于5%的采樣精度。Current sensing plays an important role in controlling,monitoring or protection functions of power systems.To meet the current sensing requirement of Bidirectional DC/DC converters,a high-accuracy Bidirectional current sensing circuit is proposed.The proposed current sensing circuit inserts a resistor in the path of the current to be sensed,while the current mirror and biased current circuit are introduced.Therefore,the Bidirectional current can be expressed by positive voltage.By theoretical analysis and simulation,the sampling theory is analyzed and four biased current circuits are compared.At last,experimental results verified the proposed method.It is demonstrated that the proposed current sensing circuit can achi...

    標(biāo)簽: 雙向DC電源 電流采樣

    上傳時(shí)間: 2022-04-22

    上傳用戶:

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