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The application based on FPGA chip are more and more popular especially for speech processing and image processing. At the same time, the application needs more memory except for on-chip memory to store additional data. To meet the requirements of external memory for FPGA-based systems, the writing/reading SD card system based on FPGA is designed and implemented. In this thesis, after analyzing the...
For some single chip micro computer (MCU) system which work conditions fluctuate seriously, it is necessary to input data and adjusting control parameters by human-computer interface. However, the programs of MCU AT89C51 can not be altered after being programmed into memory. Firstly, the cooperative circuit of AT89C51 and AT24C2 is designed to solve such situation. In addition, a practical system...
This paper presents an effective design of a asynchronous FIFO circuit for multiple asynchronous clocks data transmission. The dual synchronization and gray code are proposed. According to experiments, the probability of metastability is reduced effectively. In the simulation the proposed circuits can operate at a clock rate of 256 MHz while in writing and 329 MHz in reading and is implemented in...
The evolution of deep submicron technologies allows the development of increasingly complex Systems on a Chip (SoC). However, this evolution is rendering less viable some well-established design practices. Examples are the use of multi-point communication architectures (e. g. busses) and designing fully synchronous systems. In addition, power dissipation is becoming one of the main design concerns...
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