設(shè)計(jì)了以FPGA為核心采集模塊，以單片機(jī)為顯示控制核心，以TFT彩屏液晶為顯示器件的便攜數(shù)字存儲(chǔ)示波器。通過異步FIFO實(shí)現(xiàn)了FPGA中高速數(shù)據(jù)流與單片機(jī)處理速度之間的速率匹配。以三總線結(jié)構(gòu)以及控制信號(hào)的握手協(xié)議為基礎(chǔ)，保證了FPGA與單片機(jī)通信的有效性和可靠性。該系統(tǒng)具有自動(dòng)頻率控制(AFC)和自動(dòng)增益控制(AGC)的功能，可以方便地對(duì)信號(hào)進(jìn)行測(cè)量。

　　Abstract:

　　A kind of portable digital storage oscilloscope (DSO) is developed in this paper. It works with FPGA as core acquisition module， MCU as the display and control center， and TFT colorized LCD as its display device. By using asynchronous FIFO， it realizes the speed match between high data flow in FPGA and processing speed of MCU. The validity and reliability between the communications of FPGA and MCU is guaranteed by the three-bus structure and handshaking-agreement. This system has the function of automatic frequency control (AFC) and automatic gain control (AGC)， and it can measure the signal conveniently.