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Method and apparatus having dynamically scalable clook domains for selectively interconnecting subsystems on a synchronous bus
Method and apparatus having dynamically scalable clook domains for selectively interconnecting subsystems on a synchronous bus
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机译:具有动态可扩展clook域的方法和设备,用于选择性地互连同步总线上的子系统
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摘要
In one form, a method for communicating among subsystems coupled to a bus of a computer system on an integrated circuitry chip includes operating subsystems at independent clock frequencies when the subsystems are not communicating with one another on the bus. Selected pairs of the subsystems are operated at a shared clock frequency by selectively varying frequencies of clock signals to the subsystems, so that communication can occur at the shared clock frequency on the bus between the selected subsystems, but at different clock frequencies for respective different pairings of the subsystems, and so that the subsystems can operate at independent clock frequencies when not communicating with other ones of the subsystems. Communication among the subsystems is by a bus-based protocol, according to which when a subsystem is granted access to the bus the subsystem has exclusive use of the bus.
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