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通信設(shè)計(jì)應(yīng)用
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MAX3420E常見(jiàn)問(wèn)題
摘要：本應(yīng)用筆記列出了SPI接口外設(shè)控制器MAX3420E的常見(jiàn)問(wèn)題(FAQ)。 一般問(wèn)題 什么是MAX3420E? MAX3420E包含微處理器嗎? MAX3420E能夠提供什么樣的...
2009-04-25 標(biāo)簽：MAX3420E 1637
MAX3420E中斷系統(tǒng)
摘要：MAX3420E可為微控制器等任何SPI主控制器加入U(xiǎn)SB外設(shè)功能。MAX3420E的工作主要通過(guò)中斷請(qǐng)求(IRQ)位協(xié)助完成，這些中斷請(qǐng)求位提示SPI主控制器處理USB事件。本應(yīng)用筆記對(duì)MAX3420E中斷...
2009-04-25 標(biāo)簽：MAX3420E 805
MAX3420E系統(tǒng)調(diào)試
摘要：本應(yīng)用筆記列出了保證MAX3420E正常工作需要的詳細(xì)檢查步驟，包括系統(tǒng)的檢查過(guò)程和調(diào)試提示。 引言當(dāng)您設(shè)計(jì)了一塊電路板，將MAX3420E與您喜愛(ài)的微控制...
2009-04-25 標(biāo)簽：MAX3420E 1300
MAX3421E常見(jiàn)問(wèn)題
摘要：MAX3421E可通過(guò)SPI端口為任何系統(tǒng)添加USB主機(jī)或外設(shè)功能。以下這些常見(jiàn)問(wèn)題(FAQ)回答了有關(guān)MAX3421E基本操作的一些問(wèn)題。 ...
2009-04-24 標(biāo)簽：MAX3421E 3017
實(shí)用USB術(shù)語(yǔ)
摘要：如果您剛開(kāi)始接觸USB，在深入研究Maxim公司關(guān)于USB的應(yīng)用筆記之前了解一些USB術(shù)語(yǔ)將很有幫助的。該應(yīng)用筆記介紹了基本的USB術(shù)語(yǔ)，尤其針對(duì)MAX3420E USB控制器和MAX3421E USB外設(shè)/...
2009-04-24 標(biāo)簽：usb 842
Maxim USB庫(kù)
摘要：Maxim USB庫(kù)是使用ARM7™處理器并基于MAX3421E/MAX3420E提供的軟件例程。本應(yīng)用筆記對(duì)系統(tǒng)及其軟件運(yùn)行進(jìn)行了說(shuō)明，在同一ARM® C語(yǔ)言代碼中同時(shí)實(shí)現(xiàn)了USB主機(jī)和外設(shè)功能。這...
2009-04-24 標(biāo)簽：usb 1314
MAX3421E版本1和2主機(jī)OUT傳輸
摘要：該應(yīng)用筆記對(duì)主機(jī)USB控制器MAX3421E版本1和2進(jìn)行了討論。MAX3421E采用雙緩沖發(fā)送FIFO向USB外設(shè)發(fā)送數(shù)據(jù)。在該器件的版本1和2中，需著重考慮OUT傳輸?shù)木幊?。該?yīng)用筆記詳細(xì)說(shuō)明...
2009-04-24 標(biāo)簽：MAX3421E 1837
利用DS8007評(píng)估套件進(jìn)行設(shè)計(jì)
摘要：本文闡述使用DS8007雙智能卡接口評(píng)估(EV)套件的步驟，解釋了怎樣安裝和配置軟件、配置硬件，建立并裝載板上DS5002FP微控制器執(zhí)行的應(yīng)用軟件。提供了一個(gè)簡(jiǎn)單的"Hello World"實(shí)...
2009-04-24 標(biāo)簽：DS8007 1009
DS8007在智能卡交易中的應(yīng)用
摘要：本應(yīng)用筆記介紹了一個(gè)用DS8007接口器件和DS5002安全微控制器設(shè)計(jì)的智能卡支付終端實(shí)例。DS8007評(píng)估(EV)套件和所提供的C源代碼可實(shí)現(xiàn)基本的智能卡存款、取款和卡的初始化功能...
2009-04-24 標(biāo)簽：DS8007 1076
DS8007和智能卡接口基礎(chǔ)
摘要：DS8007是一款低成本的多協(xié)議雙智能卡接口，滿足所有ISO 7816、EMV™和GSM11-11的要求。這個(gè)混合信號(hào)外設(shè)可以管理微控制器和兩個(gè)獨(dú)立智能卡間的所有接口細(xì)節(jié)。本應(yīng)用筆記介...
2009-04-24 標(biāo)簽：DS8007 1598
DS8113智能卡模擬接口評(píng)估套件使用說(shuō)明
摘要：本應(yīng)用筆記介紹使用DS8113智能卡模擬接口評(píng)估(EV)套件的必要步驟。本文說(shuō)明如何安裝、配置套件的硬件和軟件，如何創(chuàng)建、裝載MAXQ2000 RISC微控制器的執(zhí)行程序。這里提供了一...
2009-04-24 標(biāo)簽：DS8113 1117
RS-485的數(shù)據(jù)介面可以讓孤立的，全雙工運(yùn)作-RS-485
Abstract: A circuit is described that provides fully isolated RS-485 full-duplex data communication with only two integrated circuits (ICs). An internal transformer-coupled isolated supply and internal optocouplers in the data path provide...
2009-04-24 標(biāo)簽：RS-485 969
ESD保護(hù)I/O端口
Abstract: This application note describes how ESD threatens electronic systems, type of damage inflicted, how ESD is generated, test methods and waveforms used, human body and machine models for testing, IEC compliance levels, contact and ...
2009-04-24 標(biāo)簽： 1206
Maxim Leads the Way in ESD Pro
Abstract: This application note describes how ESD threatens electronic systems, type of damage inflicted, how ESD is generated, test methods and waveforms used, human body and machine models for testing, IEC compliance levels, contact and ...
2009-04-24 標(biāo)簽：ESD 514
選拔使用RS-232接口，遙感-422，和RS-485串行數(shù)
Abstract: Three common serial data standards, RS-232, RS-422, and RS-485, are described by specification and electrical interface. Cable termination techniques, use of multiple loads, daisy-chaining of RS-232, conversion of RS-232 to RS-48...
預(yù)強(qiáng)調(diào)提高RS-485的通信-Pre-Emphasis Im
Abstract: Intersymbol interference in RS-485 data transmission systems is discussed, with emphasis on improving transmission data rates or line lengths. RS-485 transceivers having internal driver pre-emphasis and corresponding receiver de-...
2009-04-24 標(biāo)簽：通信 1643
修剪方法的電力需要在RS-485接口系統(tǒng)-Methods f
Abstract: This paper describes methods of saving power in RS-485 data communication systems. Methods include low-power transceiver integrated circuits (ICs), ICs with built-in fail-safe thresholds allowing the elimination of cable fail-saf...
2009-04-24 標(biāo)簽：RS-485 1340
新的RS-485接口芯片提高系統(tǒng)可靠性和故障檢測(cè)中的電機(jī)控制
Abstract: Applying a unique 3-channel RS-485 transceiver displaying many unusual features increases reliability and fault-detection in motor-control applications. Designed specifically for motor shaft encoder applications, the MAX3097 and ...
2009-04-24 標(biāo)簽：芯片 1299
RS-485接口（EIA/TIA-485）差分?jǐn)?shù)據(jù)傳輸系統(tǒng)的
Abstract: Electrical specifications are presented for the RS-422 unidirectional, RS-485 full-duplex and PROFIBUS data transmission systems. Electrostatic discharge (ESD) protection, data rates, and loading conditions are considered. The co...
2009-04-24 標(biāo)簽：數(shù)據(jù)傳輸 2109
指導(dǎo)方針進(jìn)行適當(dāng)?shù)木€路一個(gè)RS-485接口 TIA/EIA-
Abstract: The proper method of wiring an RS-485 network is described, with recommendations for twisted-pair cabling and correctly locating termination resistors. Received waveforms are shown for examples of proper and improper cable termin...
2009-04-24 標(biāo)簽：RS-485 1599
使用MAX3157高電阻RS-485接口收發(fā)器
Abstract: This application note describes functional operation of MAX3157 RS-485 transceiver with ±50V isolation and internal power transfer across the isolation barrier. Common-mode signals are described, and the origin of CMR voltages i...
在現(xiàn)場(chǎng)總線網(wǎng)絡(luò)中使用RS-485/RS-422標(biāo)準(zhǔn)收發(fā)器-U
Abstract: RS-485 transceivers offer an easy way to implement the physical layer in industrial networks; several fieldbus standards specify an RS-485 serial port for communications. This article describes several fieldbus technologies, and ...
用RS-485能夠傳多快？傳多遠(yuǎn)？
摘要：工業(yè)數(shù)據(jù)通訊系統(tǒng)設(shè)計(jì)常常面臨這樣的疑問(wèn)：在多點(diǎn)、中等速率、串行數(shù)據(jù)通訊中，成本最低的方案是什么？能夠獲得的最高傳輸速率是多大，傳輸?shù)木嚯x有多遠(yuǎn)？如何實(shí)現(xiàn)...
2009-04-24 標(biāo)簽：RS-485 6332
串行數(shù)據(jù)接口芯片供應(yīng)雙極電壓-Serial-Data Int
Some of the interface ICs currently available for serial-data transmission not only operate from low VCC levels (5V or 3.3V); they also generate bipolar dc voltages (±6.5V to ±10V) to support the minimum driver-output levels as specified...
2009-04-24 標(biāo)簽：芯片數(shù)據(jù)接口 1123
RS-232接口功能的解釋-RS-232 Features
Abstract: RS-232 features are explained in a way that makes it easy to select an appropriate RS-232 communication IC to meet any system need. Special attention is given to, signal swings, slew rates, enhanced ESD protection as well as data...
2009-04-24 標(biāo)簽：RS-232 3938
RS - 232串行通信-Fundamentals of R
Abstract: Due to its relative simplicity and low hardware overhead (when compared to parallel interfacing), serial communications is used extensively within the electronics industry. Today, the most popular serial communications standard i...
ESD Considerations for RS-232
Abstract: Technical brief suggests ESD protection schemes for RS-232 transceivers. Basic diode clamps, TransZorb™, and zener diodes are considered. Internal latch-up is explained. Protection of vulnerable CMOS devic...
2009-04-24 標(biāo)簽：RS-232 2813
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