ISP1581是菲利普公司推出的USB2.0通讯芯片，能够实现比USB1.1更快的数据通讯。本程序演示的是利用端点1及厂商请求进行收发通讯的例子。-ISP1581 is a USB2.0 communication chip, it provides faster data transmission then USB1.1. This program display the sales point 1 and vendor request for starting communication.