PDIUSBD12芯片的英文技术手册!USBinterfacedevicewithparallelbusRev.08—20December2001ProductdatadescriptionThePDIUSBD12isacostandfeatureoptimizedUSBdevice.Itisnormallyusedinmicrocontrollerbasedsystemsandcommunicateswiththesystemmicrocontrolleroverthehigh-speedgeneralpurposeparallelinterface.Ital