Abstract
Faced with the drawback of widely-used SDRAM controller in TFT-LCD driver,a arbiter for SDRAM controller is designed in FPGA device.The arbiter has the right to distribute the use of data and address buses.In this way,the ideal function is realized that the image data can be updated by means of the external device while the LCD is still at work.In the paper,the design method of the arbiter is introduced.Various parameters of the arbiter are worked out after considering the depth of FIFO,the burst length of SDRAM,the operating frequencies of different components and so on.Therefore,the loss or errors in data can be avoided when the SDRAM controller is under the control of the arbiter.
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