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介紹 USB接口的特點 ,討論了 89C5 2單片機無線 USB系統(tǒng)接口設計 ,介紹了將傳統(tǒng)的 RS 2 32接口與 PC機通信的無線 /有線收發(fā)器改為采用 Philips公司 PDIUSBD12芯片的 USB接口的設計方案 ,用于實現(xiàn)遠距離數(shù)據(jù)的無線傳輸。
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USB 2.0 Specification Engineering Change Notice (ECN) #1: Mini-B connector Date: 10/20/2000 Reason for ECN: The USB 2.0 specified device-side connector – the B connector – is too large for use with a new generation of handheld and mobile devices, e.g., cell phones which would benefit from connectivity to the PC. This ECN incorporates a specification of a device-side mini connector (hereafter r