Avoiding oscillation in self-synchronous bi-directional communication system
AssigneeInternational Business Machines Corporation
InventorsDaniel Barus, Eileen Behrendt, Jeffrey Biamonte, Raymond Harrington, Timothy Trifilo
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Abstract
In a bi-directional, self-synchronous bus for communication between semiconductor devices, a logic delay is provided as a flag to a state machine control for indicating that the bus is making a transition from a low to a high state. The logic delay causes the bus to adaptively idle until the bus settles, making it amenable for a wide variety of bus sizes and topologies. In this way, oscillation of the bus is avoided without slowing the speed of the state machine clock.
Claims17
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At least one program storage device readable by a machine, tangibly embodying at least one program of instructions executable by the machine to perform a method for controlling communication between devices coupled via a bi-directional bus, the method comprising:
- providing control logic for determining a state of communication between the devices;
- and
- providing a logic delay for adaptively idling the bus during a logic level transition between states of communication between the two devices, such that a logic level transition is not communicated until the logic level transition is complete.
Dependencies are inferred from the claim text.