FPGA器件的竞争与冒险现象及消除方法

The Competition Risk in FPGA and the Methods of Avoiding

现场可编程门阵列(FPGA)由于其内部构成,容易引起竞争冒险现象,从而使电路工作的稳定性大受影响,电路也容易产生误动作,以致产生意想不到的后果。本文详细介绍了冒险现象的产生,并结合实例介绍了消除竞争冒险现象的各种方法。这些方法主要通过改变设计,破坏毛刺产生的条件来减少毛刺的发生。他能够使FPGA设计中毛刺的出现几率减到最小,大大减少了逻辑错误,加强了电路工作的稳定性,有效地抑制了干扰,使设计也更加优化、合理。

It is easy to cause competition risk phenomenon in FPGA because of its internal mechanism.This will affect the stability of the circuit strongly and will cause wrong operations of the circuit.The consequences will be too ghastly to contemplate. The paper introduces the cause of competition risk phenomenon and the methods to avoiding it.These methods decrease the glitches through changing designs and destroying conditions of the glitches emerging.The glitch and errors in logic is decreased and the stability of the circuit is strengthened and interference is restrained.The design will become more optimized and reasonable.