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软件设计/软件工程 This application note considers the design of frequency- selective filters, which modify the freque
This application note considers the design of frequency-
selective filters, which modify the frequency content
and phase of input signals according to some specification.
Two classes of frequency-selective digital filters
are considered: infinite impulse response (IIR) and finite
impulse response (F ...
书籍 Arduino+Workshop+A+Hands-On+Introduction
Have you ever looked at some gadget and wondered
how it really worked? Maybe it was a remote control
boat, the system that controls an elevator, a vending
machine, or an electronic toy? Or have you wanted
to create your own robot or electronic signals for a model railroad, or per-
haps you’d like t ...
技术资料 PCIE3.0/4.0接收端（RX）介绍及其测试解决方案
• PCIe 3.0 introduced formal Rx testing• Based on stress testing of the DUT in loopback◦ Looped back data must be the same as stressed data• DUT must support loopback initialization and training• Impairments in stress must be controlled and repeatable• DUT must receive stressed signals without ...
单片机编程 基于ATmega48的3相无刷电机的控制方法
介绍了采用ATmega48单片机实现三相无刷直流电机控制器的方法。利用Atmega48获得带死区的脉宽调制（PWM）、霍尔传感器的换相处理、正弦驱动信号的产生和电机转速的控制等功能。采用该方法的优点是所需的外围器件少，成本低。
Abstract:
 The method of 3-phase brushless DC motor control based on ATmega48 is pre ...
嵌入式/单片机编程 A digital fi‘equeney meter designed with FPGA development software Q-~us 11 is introduced．The 1 Hz—l
A digital fi‘equeney meter designed with FPGA development software Q-~us 11 is introduced．The 1 Hz—l MHz input measured pulse signals of the digital ii‘equency meter can be used for measuring frequency，period，pulse width and duty ratio，etc．The test results stably display O71 3 seven—segment ...
行业发展研究 Abstract - A fl exible multiscale and directional representation for images is proposed. The s
Abstract - A &#64258 exible multiscale and directional representation for images is
proposed. The scheme combines directional &#64257 lter banks with the
Laplacian pyramid to provides a sparse representation for two-
dimensional piecewise smooth signals resembling images. The
underlying expansion is ...
电源技术 电源调整与虚拟地
Abstract: Rail splitting is creating an artificial virtual ground as a reference voltage. It is used to set the signalto match the op amp's "sweet spot." An op amp has the most linear- and distortion-free qualities at that sweetspot. Typically, the sweet spot occurs near the center between the ...
通信网络 XAPP1042-利用GPIO实现以太网PHY寄存器访问
The XPS Ethernetlite peripheral does not provide any mechanism to access the Ethernet PHYregisters. These registers are used to configure auto negotiation parameters and to obtain PHYstatus. This application note provides reference systems and associated software to accessPHY registers by connecti ...
单片机编程 Using the P82B96 for bus inter
The P82B96 offers many different ways in which it can be used as abus interface. In its simplest application it can be used as aninterface between bus systems operating from different supplyvoltages. Opto isolation between two bus systems is possible, andalso the availability of the Tx and Rx signal ...
可编程逻辑 XAPP953-二维列序滤波器的实现
 
This application note describes the implementation of a two-dimensional Rank Order filter. Thereference design includes the RTL VHDL implementation of an efficient sorting algorithm. Thedesign is parameterizable for input/output precision, color standards, filter kernel size,maximum horiz ...