公开(公告)号：US6052745A

公开(公告)日：2000-04-18

申请号：US96943

申请日：1998-06-12

申请人： Michael Raymond Miller ,  John Patrick McCardle, II ,  Michael Patrick Muhlada ,  Mark Michael Schaffer ,  Christopher Randall Starr

发明人： Michael Raymond Miller ,  John Patrick McCardle, II ,  Michael Patrick Muhlada ,  Mark Michael Schaffer ,  Christopher Randall Starr

IPC分类号： G06F13/28

CPC分类号： G06F13/28

摘要： The present invention provides a method and system for fixed length bursts of data on a bus within a data processing system. The method and system in accordance with the present invention provides a burst transfer protocol which includes the providing of length information of a fixed length burst of data on a signal from at least one master device to at least one slave device when the at least one master device requests the fixed length burst of data. It also includes the asserting of a burst termination signal by the at least one slave device one cycle prior to a last cycle in the fixed length burst, and the asserting of a burst complete signal during the last cycle in the fixed length burst for a write burst, or one cycle prior to the last cycle in the fixed length burst for a read burst, based on the value of the signal. This burst transfer protocol enables burst transfers of a maximum length to be performed across a local bus between a master and a slave without dead cycle penalties after the transfer. This improves the efficiency and performance of data throughput across the local bus without the need to increase the frequency. The present invention requires no new signals and is optional so a master and slave who use the protocol of the present invention is compatible with masters and slaves who do not.

摘要翻译： 本发明提供了一种在数据处理系统内的总线上的数据的固定长度突发的方法和系统。 根据本发明的方法和系统提供突发传输协议，其包括当至少一个主设备从至少一个主设备到至少一个从设备的信号时提供固定长度的数据突发数据长度信息 设备请求固定长度的数据突发。 它还包括在固定长度脉冲串中的最后一个周期之前一个周期由至少一个从设备断言突发终止信号，以及在固定长度脉冲串中的最后一个周期期间断言突发完成信号以进行写入 基于信号的值，在针对读取脉冲串的固定长度脉冲串中的最后一个周期之前的一个周期。 该突发传输协议允许在主机和从机之间的本地总线上执行最大长度的突发传输，而在传输之后不会造成死循环损坏。 这样可以提高局部总线上数据吞吐量的效率和性能，而无需增加频率。 本发明不需要新的信号并且是可选的，所以使用本发明的协议的主设备和从设备与没有的主设备和从设备兼容。