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公开(公告)号:KR1019920009095B1
公开(公告)日:1992-10-13
申请号:KR1019890019680
申请日:1989-12-27
Applicant: 한국전자통신연구원
IPC: G06F11/16
Abstract: The circuit is for preventing the malfunction of an IOP (input/ output processor) by maintaining the waveform of CTTL signal undistorted even when an IOP is in slave mode of a MFB (main frame bus). Prevention is achieved by letting D-flipflop generate GO signal and FIN signal having pulses of more than 100ns width and letting a programmable logic array (PLA) detect the pulses precisely. The circuit is composed of a programmable logic array (PLA;16), 1st D-flipflop (18) for receiving a slave mode selecting signal (SLVADR) from the PLA (16) and sending it out, and four D-flipflops.
Abstract translation: 该电路是为了防止IOP(输入/输出处理器)的故障,即使当IOP处于MFB(主帧总线)的从属模式时,仍保持CTTL信号的波形不失真。 通过使D触发器产生具有大于100ns宽度的脉冲的GO信号和FIN信号并使可编程逻辑阵列(PLA)精确地检测脉冲来实现预防。 该电路由可编程逻辑阵列(PLA; 16),第一D触发器(18)组成,用于从PLA(16)接收从机模式选择信号(SLVADR)发送出去,并发送四个D触发器。
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