d12的测试程序 PDIUSBD12 是一款性价比很高的USB 器件它通常用作微控制器系统中实现与微控制器进行通信的 高速通用并行接口它还支持本地的DMA 传输 这种实现USB 接口的标准组件使得设计者可以在各种不同类型微控制器中选择出最合适的微控制器 这种灵活性减小了开发的时间风险以及费用通过使用已有的结构和减少固件上的投资从而用最快捷 的方法实现最经济的USB 外设的解决方案-Test procedure of d12 PDIUSBD12 one cost performance high USB device it use as little controller system realize with little controller carrying on high speed of communication usually very In common use to run side by side interface it support local DMA transmit this kind realize standard package , USB of interface enable the designer to choose among various kinds of different kinds of little controllers also Offer the most suitable little controller The flexibility reduce time risk and expenses that develop through use existing structure and investment , reduction of firmware to spend swiftest Method last solution of USB peripheral hardware