公开(公告)号：US4341950A

公开(公告)日：1982-07-27

申请号：US114925

申请日：1980-01-24

申请人： Ronald H. Kyles ,  Richard B. Woodard

发明人： Ronald H. Kyles ,  Richard B. Woodard

IPC分类号： H03K21/12 ,  H03K21/30

CPC分类号： H03K21/12

摘要： The present invention pertains to a method and synchronizer circuit for controlling the counting operation of a timer/counter circuit to synchronize the read and update functions of this circuit. The synchronizer circuit is capable of establishing a search period prior to the occurrence of each update function. During each such search period, the synchronizer circuit searches for a read command. If a read command is not received by the synchronizer circuit within the search period preceding the occurrence of an update function, the synchronizer circuit allows the update function to occur without delay. If a read command is received by the synchronizer circuit within the search period preceding the occurrence of an update function, the synchronizer circuit delays the start of the update function until after termination of the read command that was received within the search period.

摘要翻译： 本发明涉及一种用于控制定时器/计数器电路的计数操作以同步该电路的读取和更新功能的方法和同步器电路。 同步器电路能够在每个更新功能发生之前建立一个搜索周期。 在每个这样的搜索周期期间，同步器电路搜索读取命令。 如果在发生更新功能之前的搜索周期内同步器电路没有接收到读命令，则同步器电路允许更新功能无延迟地发生。 如果同步电路在更新功能发生之前的搜索周期内接收到读命令，则同步器电路延迟更新功能的开始，直到在搜索周期内接收到的读命令结束。