文章基本信息

标题：SATELLITE TIME CODE FORMAT GENERATION AND INTERFACING TO COMPUTER WITH RS-232 USING UART DEVELOPED IN VHDL
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作者：DUDDU PRADEEP KUMAR ; A.V.V. PRASAD ; S. YUGANDHAR REDDY 等
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2012
卷号：35
期号：2
页码：194-200
出版社：Journal of Theoretical and Applied
摘要：National Remote Sensing Center (NRSC) receives data from different remote satellites like IRS-P6, IRS-P5, Cartosat-2, Cartosat-2a, etc., and processes it depending on the user requirements. The satellite data received in X band is in a particular data format. This data has to be frame synchronized using a special hardware. This hardware needs time information in a special format. This time information is added in every line by the frame synchronization hardware. In the proposed project VHDL code has been developed for the generation of time in days, hours, minutes, seconds, milliseconds, microseconds structure in a BCD format. Computer will provide the start time. This time will be interfaced to the developed hardware using the UART developed within the ALTERA EPLD. The time increments will be displayed on HP display devices. The developed hardware will continuously increment from the start time provided by the computer at an interval of 1micro second. This project has been implemented and tested using the ALTERA EPLDs. This needs RS232 settings like baud rate, parity, start bits, stop bits, etc., must be programmed as per the requirement. The hardware required for this has been implemented on the wire-warp board.
关键词：Very High Speed Integrated Circuit Hardware Description Language (VHDL); Binary Coded Decimal (BCD); Universal Asynchronous Receiver and Transmitter (UART); Electrically Programmable Logic Device (EPLD)