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《Journal of Wuhan University(Natural Science Edition)》 2007-03
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Design and Implement of Pulse Modulation Controller IP Core

CAO Yang1,2,LI Xiaohui1,WANG Liwei1,YANG Yuanyuan1(1.School of Electronic and Information,Wuhan University,Wuhan 430072,Hubei,China;2.State Key Laboratory of Software Engineering,Wuhan University,Wuhan 430072,Hubei,China)  
A pulse modulation controller IP core based on AMBA peripheral bus was proposed.This controller integrates pulse width modulation(PWM) and pulse density modulation(PDM) together,and can easily change between the two modulations.The system clock frequency can be 150 MHz based on 0.13 μm standard cell library.According to the verification of FPGA,when the controller works in PWM mode,the frequency is 1 to 32 kHz.While in PDM mode the frequency is 198 Hz to 2.34 MHz.The result indicates that in the frequency of 13 to 150 MHz,the controller can change easily between the two modes,and implement efficient modulation.
【Fund】: 国家高技术研究发展计划(863)项目资助(2002AA1Z1490)
【CateGory Index】: TN492;TM571
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