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Design and Validation of Specialized Computer under Complex Circums-tances

Author: ChenYuZuo
Tutor: ZhengYangMing
School: Zhejiang University
Course: Microelectronics and Solid State Electronics
Keywords: Complex environment Dedicated computer Fast switching DSP FPGA
CLC: TP368.3
Type: Master's thesis
Year: 2012
Downloads: 12
Quote: 0
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Abstract


In this paper, under the requirements of the mission to develop , expand against the complex environment of a dedicated computer research , a dedicated computer system design , hardware and software implementation , system joint trial , and by the environment experimental evaluation . Work of dedicated computer clocked at up to 200MHz, the computing power . The host computing unit for two TI-DSP C6747 chip . With the completion of the FPGA chip switch status detection and working status of the DSP chip , this paper, and the based fast switching temperature of the DSP chip backup technology to ensure the continuous operation of a dedicated computer to the external interface near seamless . The test results showed that the switching time of a maximum of 6.1μs , DSP chip . Mount the dedicated computer system chip DSP chip size 16M * 32bit SDRAM as program memory . FPGA chip control , DSP chips loaded from NAND FLASH , and can operate the 8Gbit the FLASH space 512Kbit EEPROM space ; Similarly , in the monitoring of FPGA , DSP chips can operate the two-way rate to 720Mbps LVDS interface , all the way to dual- channel redundant 1553B interface , I backed up the rate of the 5-way kHz order switch input interface , 5-way rate of the order of kHz timing output interface ; same time DSP can operate as a state of self-test means a real-time clock (RTC) chip by two temperature sensor chip of the chip board to read the temperature of the current panel . After the electrical system functional coverage test , dedicated computer work in the 200MHz clock speed , memory function is normal, real-time clock is working properly , the temperature sensor is working properly , the DSP chip can complete the quick switch and 720Mbps LVDS communication under normal , as a remote terminal (RT) 1553B interface normal communication , input and output interfaces isolation effect good communication is normal. On this basis , a dedicated computer through the identification of 12 cycles of atmospheric pressure level thermal cycle testing , electromagnetic compatibility test based national military standard GJB151A , and accumulated 1014 hours of long-term power-on test .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Micro-computer > A variety of micro-computer > PC
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