This application note shows how to achieve low-cost, efficient serial configuration for Spartan FPGA designs. The approachrecommended here takes advantage of unused resources in a design, thereby reducing the cost, part count, memory size,and board space associated with the serial configuration circuitry. As a result, neither processor nor PROM needs to be fullydedicated to performing Spartan configuration.In particular, information is provided on how the idle processing time of an on-board controller can be used to loadconfiguration data from an off-board source. As a result, it is possible to upgrade a Spartan design in the field by sending thebitstream over a network.
上傳時間： 2013-11-01
上傳用戶：wojiaohs
為了在CDMA系統中更好地應用QDPSK數字調制方式，在分析四相相對移相（QDPSK)信號調制解調原理的基礎上，設計了一種QDPSK調制解調電路，它包括串并轉換、差分編碼、四相載波產生和選相、相干解調、差分譯碼和并串轉換電路。在MAX+PLUSⅡ軟件平臺上，進行了編譯和波形仿真。綜合后下載到復雜可編程邏輯器件EPM7128SLC84-15中，測試結果表明，調制電路能正確選相，解調電路輸出數據與QDPSK調制輸入數據完全一致，達到了預期的設計要求。 Abstract: In order to realize the better application of digital modulation mode QDPSK in the CDMA system， a sort of QDPSK modulation-demodulation circuit was designed based on the analysis of QDPSK signal modulation-demodulation principles. It included serial/parallel conversion circuit, differential encoding circuit, four-phase carrier wave produced and phase chosen circuit, coherent demodulation circuit, difference decoding circuit and parallel/serial conversion circuit. And it was compiled and simulated on the MAX+PLUSⅡ software platform,and downloaded into the CPLD of EPM7128SLC84-15.The test result shows that the modulation circuit can exactly choose the phase，and the output data of the demodulator circuit is the same as the input data of the QDPSK modulate. The circuit achieves the prospective requirement of the design.
上傳時間： 2013-10-28
上傳用戶：jyycc
The LogiCORE™ GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex™-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standards, or from scratch, to support a wide variety of custom protocols.The Wizard produces a wrapper, an example design, and a testbench for rapid integration and verification of the serial interface with your custom function Features• Creates customized HDL wrappers to configureVirtex-5 RocketIO™ GTP transceivers• Users can configure Virtex-5 GTP transceivers toconform to industry standard protocols usingpredefined templates, or tailor the templates forcustom protocols• Included protocol templates provide support for thefollowing specifications: Aurora, CPRI, FibreChannel 1x, Gigabit Ethernet, HD-SDI, OBSAI,OC3, OC12, OC48, PCI Express® (PCIe®), SATA,SATA II, and XAUI• Automatically configures analog settings• Each custom wrapper includes example design, testbench; and both implementation and simulation scripts
標簽： Transceiver Virtex Wizar GTP
上傳時間： 2013-10-20
上傳用戶：dave520l
這個軟件需要你的本機操作的。其他機器是算不出來的！ 就是說 一臺電腦只有一個注冊碼對應！ 這里有個辦法： MULTISIM2001安裝方法： 一：運行SETUP.EXE安裝。在安裝時，要重新啟動計算機一次。 二：啟動后在“開始>程序”中找到STARTUP項，運行后，繼續進行安裝，安裝過程中，第一次要求輸入“CODE"碼時， 輸入“PP-0411-48015-7464-32084"輸入后，會提示"VALID serial NUMBER FOR MULTISIM 2001 POWER-PRO." 按確定，又會出現一個“feature code”框，輸入“FC-6424-04180-0044-13881”后， 在彈出的對話框中選擇“取消”，一路確定即可完成安裝。 三：1.運行VERILOG目錄內的SETUP安裝 2.運行FPGA目錄內的SETUP安裝 3.將CRACK目錄內的LICMGR.DLL拷貝到WINDOWS系統的SYSTEM 目錄內 4.并將VERILOG安裝目錄內的同名文件刪除 5.將SILOS.LIC文件拷到VERILOG安裝目錄內覆蓋原文件，并作如下編輯： 6.將“COMPUTER_NAME”替換為你的機器名 7.將“D:\MULTISIM\VERILOG\PATH_TO_SIMUCAD.EXE”替換為你的 實際安裝路徑。如此你便可以使用VERILOG了。 四：安裝之后，運行MULTISIM2001,會要求輸入“RELEASE CODE",不用著急， 記下“serial NUMBER"和“SIGNATURE NUMBER", 使用CRACK目錄內的注冊器“MULTISIM KEYGEN.EXE" 將剛才記下的兩個號碼分別填入后， 即可得到"RELEASE CODE", 以后就可以正常使用了。 五：接下來運行 database update目錄中的幾個文件， 進行數據庫合并即可。祝你成功！！ 六：啟動MULTISIM2001時候的注冊碼 1： PP-0411-48015-7464-32084 2： 37506-86380 3:的三個空格 1975 2711 4842 里面包含了：Multisim2001漢化破解版、Multisim.V10.0.1.漢化破解版圖解 解壓密碼：www.pp51.com
上傳時間： 2013-11-16
上傳用戶：天空說我在
The data plane of the reference design consists of a configurable multi-channel XBERT modulethat generates and checks high-speed serial data transmitted and received by the MGTs. Eachchannel in the XBERT module consists of two MGTs (MGTA and MGTB), which physicallyoccupy one MGT tile in the Virtex-4 FPGA. Each MGT has its own pattern checker, but bothMGTs in a channel share the same pattern generator. Each channel can load a differentpattern. The MGT serial rate depends on the reference clock frequency and the internal PMAdivider settings. The reference design can be scaled anywhere from one channel (two MGTs)to twelve channels (twenty-four MGTs).
上傳時間： 2013-12-25
上傳用戶：jkhjkh1982
SPI（serial Peripheral Interface，串行外圍接口）是Motorola公司提出的外圍接口協議，它采用一個串行、同步、全雙工的通信方式，解決了微處理器和外設之間的串行通信問題，并且可以和多個外設直接通信，具有配置靈活，結構簡單等優點。根據全功能SPI總線的特點，設計的SPI接口可以最大發送和接收16位數據；在主模式和從模式下SPI模塊的時鐘頻率最大可以達到系統時鐘的1/4，并且在主模式下可以提供具有四種不同相位和極性的時鐘供從模塊選擇；可以同時進行發送和接收操作，擁有中斷標志位和溢出中斷標志位。
上傳時間： 2013-11-11
上傳用戶：himbly
SL811開發資料_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.
上傳時間： 2013-12-22
上傳用戶：a82531317
超聲波傳感器適用于對大幅的平面進行靜止測距。普通的超聲波傳感器測距范圍大概是 2cm~450cm，分辨率3mm（淘寶賣家說的，筆者測試環境沒那么好，個人實測比較穩定的 距離10cm~2m 左右，超過此距離就經常有偶然不準確的情況發生了，當然不排除筆者技術 問題。） 測試對象是淘寶上面最便宜的SRF-04 超聲波傳感器，有四個腳：5v 電源腳（Vcc），觸發控制端（Trig），接收端（Echo），地端（GND） 附:SRF 系列超聲波傳感器參數比較 模塊工作原理： 采用IO 觸發測距，給至少10us 的高電平信號； 模塊自動發送8個40KHz 的方波，自動檢測是否有信號返回； 有信號返回，通過IO 輸出一高電平，高電平持續的時間就是超聲波從發射到返回的時間．測試距離=(高電平時間*聲速(340m/s))/2; 電路連接方法 Arduino 程序例子： constintTrigPin = 2; constintEchoPin = 3; floatcm; voidsetup() { serial.begin(9600); pinMode(TrigPin, OUTPUT); pinMode(EchoPin, INPUT); } voidloop() { digitalWrite(TrigPin, LOW); //低高低電平發一個短時間脈沖去TrigPin delayMicroseconds(2); digitalWrite(TrigPin, HIGH); delayMicroseconds(10); digitalWrite(TrigPin, LOW); cm = pulseIn(EchoPin, HIGH) / 58.0; //將回波時間換算成cm cm = (int(cm * 100.0)) / 100.0; //保留兩位小數 serial.print(cm); serial.print("cm"); serial.println(); delay(1000); }
上傳時間： 2013-11-01
上傳用戶：xiaoyuer
用途：測量地磁方向，測量物體靜止時候的方向，測量傳感器周圍磁力線的方向。注意，測量地磁時候容易受到周圍磁場影響，主芯片HMC5883 三軸磁阻傳感器特點（抄自網上）： 1，數字量輸出：I2C 數字量輸出接口，設計使用非常方便。 2，尺寸小: 3x3x0.9mm LCC 封裝，適合大規模量產使用。 3，精度高：1－2 度，內置12 位A/D,OFFSET, SET/RESET 電路，不會出現磁飽和現象，不會有累加誤差。 4，支持自動校準程序，簡化使用步驟，終端產品使用非常方便。 5，內置自測試電路，方便量產測試，無需增加額外昂貴的測試設備。 6，功耗低：供電電壓1.8V, 功耗睡眠模式-2.5uA 測量模式-0.6mA 連接方法： 只要連接VCC，GND，SDA，SDL 四條線。 Arduino GND -> HMC5883L GND Arduino 3.3V -> HMC5883L VCC Arduino A4 (SDA) -> HMC5883L SDA Arduino A5 (SCL) -> HMC5883L SCL (注意，接線是A4，A5，不是D4,D5) 源程序： #include <Wire.h> #include <HMC5883L.h> HMC5883Lcompass; voidsetup() { serial.begin(9600); Wire.begin(); compass = HMC5883L(); compass.SetScale(1.3); compass.SetMeasurementMode(Measurement_Continuous); } voidloop() { MagnetometerRaw raw = compass.ReadRawAxis(); MagnetometerScaled scaled = compass.ReadScaledAxis(); float xHeading = atan2(scaled.YAxis, scaled.XAxis); float yHeading = atan2(scaled.ZAxis, scaled.XAxis); float zHeading = atan2(scaled.ZAxis, scaled.YAxis); if(xHeading < 0) xHeading += 2*PI; if(xHeading > 2*PI) xHeading -= 2*PI; if(yHeading < 0) yHeading += 2*PI; if(yHeading > 2*PI) yHeading -= 2*PI; if(zHeading < 0) zHeading += 2*PI; if(zHeading > 2*PI) zHeading -= 2*PI; float xDegrees = xHeading * 180/M_PI; float yDegrees = yHeading * 180/M_PI; float zDegrees = zHeading * 180/M_PI; serial.print(xDegrees); serial.print(","); serial.print(yDegrees); serial.print(","); serial.print(zDegrees); serial.println(";"); delay(100); }
上傳時間： 2014-03-20
上傳用戶：tianyi223
S3C44BOX的BIOS?？墒褂玫拿睿篽elp --- show help ? --- = help date --- show or set current date time --- show or set current time setweek --- set weekday clock --- show system running clock setmclk --- set system running clock setbaud ------ set baud rate ipcfg ------ show or set IP address load ------ load file to ram comload ------ load file from serial port run ------ run from sdram prog ------ program flash copy ------ copy flash from src to dst address boot ------ boot from flash backup ------ move bios to the top of flash md ------ show memory data move ------ move program from flash to sdram
上傳時間： 2015-01-22
上傳用戶：ANRAN
