Implement of I2Cbus control-core with FPGA Yan Xia Fang Kangling (College of Information Science And Engineering, Wuhan University of Science And Technology, Wuhan 430081 ) Abstract: In this paper, introduce I2C bus communication characteristic and I2C bus protocol. According to video decoder SAA7111A/SAA7121 ,introduce the I2C core control ideas and the main design from the point of control modules. Analysis , synthesis and Simulation the I2C module on the Cyclone--EP1C6Q240C8. And have good results in project. Key words: I2Cbus video decoder FPGA VHDL