介紹了符合CCSDS標準的RS(255,223)碼譯碼器的硬件實現結構。譯碼器采用8位并行時域譯碼算法,主要包括了修正后的無逆BM迭代譯碼算法,錢搜索算法和Forney算法。采用了三級流水線結構實現,減小了譯碼器的時延,提高了譯碼的速率,使用了VHDL語言完成譯碼器的設計與實現。測試表明,該譯碼器性能優良,適用于高速通信。
上傳時間: 2013-12-13
上傳用戶:yzhl1988
This application note describes how to implement the Bus LVDS (BLVDS) interface in the supported Altera ® device families for high-performance multipoint applications. This application note also shows the performance analysis of a multipoint application with the Cyclone III BLVDS example.
標簽: Implementing LVDS 522 Bus
上傳時間: 2013-10-26
上傳用戶:蘇蘇蘇蘇
采用dsPIC30F6010A高性能數字信號控制器,提出并實現了一種新型的集成CAN總線接口的步進電機驅動裝置。根據dsPIC30F6010A芯片外設模塊的參數特點,設計了PWM驅動電路、電機相電流測量電路和CAN總線收發器電路,開發了基于C語言的模塊化應用程序。實際測試表明,該集成CAN總線的步進電機驅動裝置可以直接接入CAN總線網絡,實現了對電機運行參數和運行狀態的遠程控制功能。
上傳時間: 2013-11-22
上傳用戶:giraffe
微電腦型RS-485顯示電表(24*48mm/48*96mm) 特點: 5位數RS-485顯示電表 顯示范圍-19999-99999位數 通訊協議Modbus RTU模式 寬范圍交直流兩用電源設計 尺寸小,穩定性高 主要規格: 顯示范圍:-19999~99999 digit RS-485傳輸速度: 19200/9600/4800/2400 selective RS-485通訊位址: "01"-"FF" RS-485通訊協議: Modbus RTU mode 顯示幕: Red high efficiency LEDs high 10.16 mm (0.4") (MMX-RS-11X) Red high efficiency LEDs high 20.32 mm (0.8") (MMX-RS-12X) Red high efficiency LEDs high 10.16 mm (0.4")x2 (MMX-RS-22X) 參數設定方式: Touch switches 記憶方式: Non-volatile E²PROM memory 絕緣耐壓能力: 2KVac/1 min. (input/power) 使用環境條件: 0-50℃(20 to 90% RH non-condensed) 存放環境條件: 0-70℃(20 to 90% RH non-condensed) CE認證: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
上傳時間: 2015-01-03
上傳用戶:feitian920
The high defi nition multimedia interface (HDMI) is fastbecoming the de facto standard for passing digitalaudio and video data in home entertainment systems.This standard includes an I2C type bus called a displaydata channel (DDC) that is used to pass extended digitalinterface data (EDID) from the sinkdevice (such as adigital TV) to the source device (such as a digital A/Vreceiver). EDID includes vital information on the digitaldata formats that the sink device can accept. The HDMIspecifi cation requires that devices have less than 50pFof input capacitance on their DDC bus lines, which canbe very diffi cult to meet. The LTC®4300A’s capacitancebuffering feature allows devices to pass the HDMI DDCinput capacitance compliance test with ease.
上傳時間: 2013-11-21
上傳用戶:tian126vip
CAN總線詳細教程
上傳時間: 2013-10-31
上傳用戶:fnhhs
當RS-485用于多主通信的總線系統時,多個主機同時發送數據,將會導致數據沖突。為了避免沖突發生,介紹了一種RS-485電路,用簡單硬件實現了總線狀態的檢測,大大降低了數據沖突概率。另外,為了避免總線上的干擾信號影響系統設備,通常需要實現總線與設備內部電路隔離,為此,文中提出了一種新的RS-485電路隔離方案。
上傳時間: 2013-11-18
上傳用戶:思索的小白
以SPI總線技術為基礎,用微控制器S3C2450X和電平轉換芯片MAX3088設計了一個RS-422接口電路,將SPI單端非平衡傳輸信號轉換為RS-422差分信號。在保證SPI同步傳輸的高效性和高速性的同時,還增強了信號的抗干擾能力。 主要使用9 個信號主機輸入G從機輸出C 主機輸出從機輸入 串行時鐘C 或外設片選或從機選擇信號由從機在主機的控制下產生信號用于禁止或使能外設的收發功能為高電平時\" 禁止外設接收和發送數據為低電平時\" 允許外設接收和發送數據! 圖1 所示是微處理器通過與外設連接的示意圖!
上傳時間: 2014-03-21
上傳用戶:lizhen9880
這是一篇關于RS-485接口應用的文章
上傳時間: 2013-12-22
上傳用戶:cjf0304
This algorithm was developed by Professor Ronald L. Rivest of MIT and can be found presented in several languages. What I provide to you here is a C++ derivative of the original C implementation of Professor Rivets. The library code itself is platform-independant and has been tested in Redhat Linux. I ve included the sample code and makefile that I used for the Linux test. The demo, however, was written with Visual C++ 6 on a Windows 2000 platform.
標簽: L. Professor algorithm developed
上傳時間: 2014-12-21
上傳用戶:gonuiln