Pulse skew control
AssigneeSGS-Thomson Microelectronics S.A.
InventorsStephen Felix, Russell Edwin Francis
Life of this patent
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Abstract
A pulse generator for use in generating pulses at different locations within a circuit has a first circuit 501 for a time dependent operation after receipt of a first input pulse and a second circuit 502 for carrying out a time dependent operation after receipt of a second input pulse after the first input pulse. A third circuit 503 is responsive to each of the first and second circuits 501,502 reaching respective predetermined conditions so that an output pulse is produced by the third circuit 503 at a time dependent on the average durations of operation of the first and second circuits 501 and 502.
Claims15
A pulse distribution circuit for controlling pulse transmission skew, said circuit comprising:
- a forward pulse transmission path;
- a return pulse transmission path;
- a pulse input connected to said forward pulse transmission path;
- at least two pulse receiving stations connected to said forward and return pulse transmission paths at spaced locations along said paths;
- and
- pulse generating circuitry at each of said stations, said pulse generating circuitry including
- a first input for receiving a pulse on said forward pulse transmission path,
- a second input for receiving a pulse on said return pulse transmission path, and
- output circuitry for generating an effective pulse at a required time for use at the respective station, said output circuitry being coupled to said first and second inputs and including delay circuitry operable in response to each of said first and second inputs to determine said required time by generating a time delay dependent on an aggregate of time delays from input at each of said first and second inputs corresponding to the same pulse in said distribution circuit.
A method of controlling pulse transmission skew in a pulse distribution circuit, comprising:
- supplying a distributed pulse along a forward transmission path and a return transmission path to at least two pulse receiving stations connected to said distribution circuit;
- receiving as a first input at each pulse receiving station a pulse on said forward pulse transmission path;
- receiving as a second input at each pulse receiving station a pulse on said return pulse transmission path;
- and
- generating an effective pulse at a required time for use at the respective pulse receiving station by generating a time delay dependent on an aggregate of time delays from input of each of said first and second inputs corresponding to the same pulse in said distribution circuit.
Dependencies are inferred from the claim text.