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可编程逻辑  PCB Design Considerations and Guidelines for 0.4mm and 0.5mm WLPs

Abstract: Using a wafer-level package (WLP) can reduce the overall size and cost of your solution.However when using a WLP IC, the printed circuit board (PCB) layout can become more complex and, ifnot carefully planned, result in an unreliable design. This article presents some PCB designconsidera ...

https://www.eeworm.com/dl/kbcluoji/38883.html

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可编程逻辑  远程配置Nios II处理器应用笔记

&nbsp;&nbsp;&nbsp;&nbsp; 通过以太网远程配置Nios II 处理器应用笔记 Firmware in embedded hardware systems is frequently updated over the Ethernet. For embedded systems that comprise a discrete microprocessor and the devices it controls, the firmware is the software image run by the microprocessor. Wh ...

https://www.eeworm.com/dl/kbcluoji/39386.html

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可编程逻辑  XAPP444 - CPLD配件,技巧和窍门

Most designers wish to utilize as much of a device as possible in order to enhance the overallproduct performance, or extend a feature set. As a design grows, inevitably it will exceed thearchitectural limitations of the device. Exactly why a design does not fit can sometimes bedifficult to determ ...

https://www.eeworm.com/dl/kbcluoji/40063.html

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可编程逻辑  XAPP708 -133MHz PCI-X到128MB DDR小型DIMM存储器桥

&nbsp; The Virtex-4 features, such as the programmable IDELAY and built-in FIFO support, simplifythe bridging of a high-speed, PCI-X core to large amounts of DDR-SDRAM memory. Onechallenge is meeting the PCI-X target initial latency specification. PCI-X Protocol Addendum tothe PCI Local Bus Spec ...

https://www.eeworm.com/dl/kbcluoji/40099.html

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可编程逻辑  Creating Safe State Machines(Mentor)

&nbsp; Finite state machines are widely used in digital circuit designs. Generally, when designing a state machine using an HDL, the synthesis tools will optimize away all states that cannot be reached and generate a highly optimized circuit. Sometimes, however, the optimization is not acceptabl ...

https://www.eeworm.com/dl/kbcluoji/40149.html

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可编程逻辑  计算FR4上的差分阻抗(PDF)

Calculation of the Differential Impedance of Tracks on FR4 substrates There is a discrepancy between calculated and measured values of impedance for differential transmission lineson FR4. This is especially noticeable in the case of surface microstrip configurations. The anomaly is shown tobe due to ...

https://www.eeworm.com/dl/kbcluoji/40417.html

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测试测量  高精度温度测量铂电阻温度探测器(PRTDs)和ADC

Abstract: Many modern industrial, medical, and commercial applications require temperature measurements in the extended temperature rangewith accuracies of &plusmn;0.3&deg;C or better, performed with reasonable cost and often with low power consumption. This article explains how platinumresistance ...

https://www.eeworm.com/dl/544/41751.html

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测试测量  智能照明控制器测量环境光线

Abstract: This application note explains how to design an intelligent lighting controller that senses and measures the ambient lightlevel with an ambient light sensor (ALS). Equipped with a real-time clock (RTC), the controller also knows when to turn lighting on oroff at specified times. The syst ...

https://www.eeworm.com/dl/544/41783.html

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测试测量  能量收集系统的设计挑战

Modern electronic systems solve so many difficult problems that they often seem like magic. Nonetheless, these systems all have thesame basic limitation: they need a source of electrical power! Most of the time this is a straightforward challenge for the electronicdesigner, because there are many ...

https://www.eeworm.com/dl/544/41801.html

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接口技术  谈集成电路的通用接口

Abstract: How can an interface change a happy face to a sad face? Engineers have happy faces when an interface works properly.Sad faces indicate failure somewhere. Because interfaces between microprocessors and ICs are simple&mdash;even easy&mdash;they are oftenignored until interface failure caus ...

https://www.eeworm.com/dl/511/42396.html

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