Method and apparatus for synchronous bus interface optimization

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364DIG1, 364239, 3642408, 3642705, 364271, 3642715, 395861, G06F 1300, G06F 1336

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active

054653460

ABSTRACT:
A method and apparatus which enables devices connected to a bus to detect and take advantage of the early arrival of bus signal inputs. A signal arrival encoder circuit included in a device encodes the arrival time of a signal input whose early arrival is desired to be detected. The arrival time of the signal at issue is categorized according to a desired degree of precision or granularity depending upon the complexity of the encoder used in the respective embodiment. The encoded signal arrival information is then used by the respective device to determine when to sample the other respective input signal. By detecting the early arrival of this input, the device is not required to wait for the worst case signal arrival time to utilize the information. This considerably increases system performance.

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