IC697MDL240收發(fā)器的設(shè)計(jì)
IC697MDL240收發(fā)器作為USB 接口的模擬前端主要把主機(jī)發(fā)送過來的模擬信號(hào)轉(zhuǎn)換成數(shù)字信號(hào)VP、VM 傳到數(shù)字鎖相環(huán)或把協(xié)議引擎發(fā)送過來的VP0、VM0 數(shù)字信號(hào)轉(zhuǎn)換成模擬信號(hào)，并完成串并和并串的轉(zhuǎn)換；
收發(fā)器的模型如圖3所示，Dplus為正相USB差分?jǐn)?shù)據(jù)線，Dminu為負(fù)相USB差分?jǐn)?shù)據(jù)線，兩者都是雙向的。 OEn為USB發(fā)送使能，為低時(shí)作為發(fā)送功能，單相輸出口被置為高阻，為高時(shí)作為接收功能，單相輸入口被 置為高阻。
IC697MDL240
IC697MDL240聯(lián)系人：李先生
手機(jī)：18030229050
電話：0592-5709821
傳真：0592-5709828
QQ 1878187406
郵箱 1878187406@qq.com
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