Cypress Semiconductor makes a variety of PLL-based clock generators. This application note provides a set of recommendations to optimize usage of Cypress clock devices in a system. The application note begins with recommended termination techniques for clock generators. Subsequently, power supply filtering and bypassing is discussed. Finally, the application note provides some recommendations on board layout.
標(biāo)簽： Semiconductor application generators PLL-based
上傳時間： 2013-12-20
上傳用戶：水中浮云
AN FPGA-BASED IMPLEMENTATION FOR MEDIAN FILTER MEETING THE REAL-TIME REQUIREMENTS OF AUTOMATED VISUAL INSPECTION SYSTEMS
標(biāo)簽： IMPLEMENTATION REQUIREMENTS FPGA-BASED AUTOMATED
上傳時間： 2013-12-13
上傳用戶：litianchu
本分布式小區(qū)智能網(wǎng)絡(luò)模型采用符合現(xiàn)場總線(Fieldbus)要求 的CAN技術(shù)，以帶CAN總線端口的主控機和單元控制器CAN端接口構(gòu)成的 CAN網(wǎng)絡(luò)層，下層為由帶RS485端口的住戶采集器和單元控制器RS485端 接口構(gòu)成了RS485網(wǎng)絡(luò)層，向上則利用PC機連接CAN網(wǎng)絡(luò)層，作為智能 化小區(qū)管理中心，從而基本實現(xiàn)智能小區(qū)管理、控制、報警、信息采 集和自我檢測的功能。 本文從智能小區(qū)、現(xiàn)場總線、CAN技術(shù)到“CAN+RS485”雙底層網(wǎng) 絡(luò)模型的軟、硬件研究，較為詳細(xì)的介紹了其設(shè)計、調(diào)試運行和期間 各種問題的解決。
標(biāo)簽： Fieldbus CAN 分布式 小區(qū)智能
上傳時間： 2015-12-05
上傳用戶：Altman
Fractal Explorer GUI-based program for exploring and studying the most common form of fractals, chaotic systems and fractional dimension systems
標(biāo)簽： GUI-based exploring Explorer fractals
上傳時間： 2013-11-25
上傳用戶：ljmwh2000
Generates Rayleigh fading processes based on autoregressive models.
標(biāo)簽： autoregressive Generates processes Rayleigh
上傳時間： 2015-12-06
上傳用戶：無聊來刷下
The development of a data acquisition card based on USB bus is introduced in this article.It first describes the configuration and principle of this card in the part of hardware design,and then the application program and device driver in the part of software design.Data acquisition program in firmware is also discussed.Finally,this data acquisition card is tested and evaluated in a program developed by Lab Windows CVI,which shows that this car is stable and reliable
標(biāo)簽： development acquisition introduced article
上傳時間： 2015-12-07
上傳用戶：lijianyu172
IPCAM Design document based on TI DaVinci
標(biāo)簽： document DaVinci Design IPCAM
上傳時間： 2013-12-26
上傳用戶：songrui
In a preemptive priority based RTOS, priority inversion problem is among the major sources of deadline violations. Priority inheritance protocol is one of the approaches to reduce priority inversion. Unfortunately, RTOS like uC/OS can’t support priority inheritance protocol since it does not allow kernel to have multiple tasks at the same priority. Although it has different ways to avoid priority inversion such as priority ceiling protocol, developers still have some difficulties in programming real time applications with it. In this paper, we redesign the uC/OS kernel to provide the ability to support round robin scheduling and implement priority inheritance semaphore on the modified kernel. As result, we port new kernel with priority inheritance semaphore to evaluation board, and evaluate the execution time of each of the kernel service as well as verify the operations of our implementation.
標(biāo)簽： priority preemptive inversion problem
上傳時間： 2015-12-14
上傳用戶：氣溫達上千萬的
基于DDS的信號發(fā)生器的設(shè)計與開發(fā) The Design and Development of Function Generator Based on DDS
標(biāo)簽： Development DDS Generator Function
上傳時間： 2014-01-03
上傳用戶：stewart·
一般使用PC Based Controller 都是當(dāng)作現(xiàn)場設(shè)備的一種，也就是要接受 主系統(tǒng)的命令，做一些操作控制。以Modbus 來看屬于Slave 的角色，隨 時等待接收Modbus Master 的Query Message，然后依據(jù)內(nèi)容做控制，最后 將控制結(jié)果以Response Message 回傳。本章將以ICP 7524 及ICP 7188E5 等 兩種設(shè)備分別設(shè)計Modbus RTU、ASCII 及Modbus/TCP 的Slave 應(yīng)用程序， 讀者可以將此兩種程序的架構(gòu)再延伸設(shè)計至各種實際應(yīng)用程序。
標(biāo)簽： Controller Based 現(xiàn)場設(shè)備
上傳時間： 2015-12-16
上傳用戶：nanxia
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