CSR_USB转SPI&并口下载器大PK啦，大家不难看出，USB的下载速度是普通并口的3倍啊！屏幕上方窗口是普通的并口，屏幕下方窗口是USB接口！清空FLASH后，对比同样下载8M的.xpv文件，USB用时16.02秒，普通并口用时46.71秒！
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