Research Of The Multi-Line Array CCD Data Acquisition Based On The Chip Of TMS320DM642

Charge-coupled Device as a high-performanc semiconductor Converter of converting light into electricity, a large number of related products used in industrial,military,civilian,etc.Simple structure,low cost,scanning speed and high frequency response of the outstanding merits of the CCD is widely used in attitude measurement objects.High-precision,real-time and portability are important issues that need to be considered when designing system. This paper analyzes the domestic and international status of the development of linear array CCD based on the existing system for problems. To this end,the subject to TI's DSP chips produced by the core processor TMS320DM642 designed based on multi-linear array CCD data acquisition system.TMS320DM642 is a high performance digital media processor,up to 720 Mbps data speeds and the ability to handle real-time measurement to provide a strong guarantee.The focus of this research is based on multi-linear array CCD TMS320DM642 data acquisition hardware system design,this system design consists of three parts:the first part is using the chip of TMS320DM642 to produce core board,leads to use of each interface pins;the second part is designing the module of CCD driver, the core of the module is a complex programmable logic device(CPLD);the last part is designing the module of high-precision A/D converter,to convert the analog signals into digital signals for subsequent processing into the core processor.Based on the success of the hardware circuit design and debugging to editing software, this part including the CCD drive signal,synchronization signal and processor core part of the preparation..