Zero-skew transition detection circuit
OwnerHoward L. Levy, Harsh D. Sharma +1inventors
InventorsHoward L. Levy, Harsh D. Sharma, Nayon Tomsio
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Abstract
The present invention describes a method and an apparatus for zero skew signal transition detection between multiple communication paths. The signal transition at the transition point is detected by sampling the signal before the transition point. A transition detection pulse is generated when the signal begins to transition at the transition point. The transition detection pulse can be used to adjust the signal transition on multiple adjacent parallel paths with zero skew to obtain desired coupling between the paths. The width of transition detection pulse can be adjusted to match the transition period of the signal.
Claims33
A method of detecting a transition with zero skew comprising:
- identifying a coupling point for a plurality of communication paths;
- sampling a first communication path of the plurality of communication paths at a sampling point on the first communication path;
- detecting transition of a first signal on the first communication path;
- and
- using the transition of the first signal to generate a detection pulse.
A system for detecting a transition with zero skew comprising:
- a transition detector, the transition detector detects transition of a first signal on a first one of a plurality of communication paths;
- a delay unit coupled to the transition detector, the delay unit provides delays for the first signal;
- and
- a switching circuit coupled to the transition detector, the switching unit generates a detection pulse.
A system of detecting a transition with zero skew comprising:
- means for identifying a coupling point for a plurality of communication paths;
- means for sampling a first communication path of the plurality of communication paths at a sampling point on the first communication path;
- means for detecting transition of a first signal on the first communication path;
- and
- means for using the transition of the first signal to generate a detection pulse.
Dependencies are inferred from the claim text.