Finally function and timing simulation are accomplished . in the hardware design , ftdi ' s ft245bm device is selected to accomplish usb interface . altera ' s epm7064 device is selected to accomplish jtag interface logic design 在接口電路硬件設(shè)計中,選用ftdi公司的usb控制芯片ft245bm ,實現(xiàn)usb物理層和鏈路層協(xié)議的解析, altera的可編程邏輯器件epm7064實現(xiàn)接口邏輯。