关键词: ADSP BF533, VGA, TIMER接口, PPI接口

Abstract:

This paper take advantage of ADSP-BF533 and its circuit to communicate with VGA ,the image which is changed into digital signal can be displayed on CRT screen through VGA interface .TIMER interface and PPI interface play the most important role in the DSP.TIMER interface can be configured to generate row synchronizing signal and file synchronizing signal .Weather the two signals are correct is very critical ,The TIMER interface in the pulse with modulation mode can generate row synchronizing signal and file synchronizing signal after a simply configuration .The three primary color signals which the image converts into are output through PPI interface.The digital signals which are output through the two interfaces can be connected to VGA after D/A converting .The test shows that the image can be displayed on the screen.

Key words: ADSP BF533;VGA;TIMER interface;PPI interface