Abstract
Traditionally，the display and control interface in digital shortage oscillograph is mainly made up of diversified analog electronic devices and digital electronic chips. Compared with he display and control interface in digital shortage oscillograph based on FPGA，the former have exposed many disadvantages such as costliness in price and difficulties in development. In view of the many advantages in FPGA, such as operating flexibility, rapid development ,the lower investment risk, and it is erasable and programming multiple-system programmable. It will probably become the focus in the field of electronic designing. Therefore, the display and control interface based on FPGA is also very necessary.
The design of FPGA of Display and control interface in digital shortage oscillograph based on DSP mainly has three parts，first one is data interface which transfer serial data into parallel data，the second one is interrupt extend interface，and the third one is clock signal divider，which used in system debugging. In the process we design this FPGA，we used language of Verilog HDL，and the we chose Actel A3P030 FPGA in ProASIC3 family. Based on the final results of computer Simulation，all the outputs varies in the light of changes of input ，the design completely accord with requirement.
Keyword: FPGA; Digital shortage oscillograph; Display and control interface
