Systems and methods for controlled wedge spacing in a storage device

摘要

Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide clock generation systems that include: a first clock multiplier circuit, a second clock multiplier circuit, a modulus accumulator circuit, and a data clock phase control circuit. The first clock multiplier circuit is operable to multiply a reference clock by a first multiplier to yield a first domain clock, and the second clock multiplier circuit is operable to multiply the reference clock by a second multiplier to yield a second domain clock. The modulus accumulator circuit is operable to yield a value indicating a fractional amount of the second domain clock that an edge of the second domain clock is offset from a trigger signal. The data clock phase control circuit is operable to phase shift the second domain clock by a phase amount corresponding to the fractional amount.

主权项

1. A clock generation system, the clock generation system comprising:
a first clock multiplier circuit operable to multiply a reference clock by a first multiplier to yield a first domain clock; a second clock multiplier circuit operable to multiply the reference clock by a second multiplier to yield a second domain clock; a modulus accumulator circuit operable to yield a value indicating a fractional amount of the second domain clock that an edge of the second domain clock is offset from a trigger signal; a data clock phase control circuit operable to phase shift the second domain clock by a phase amount corresponding to the fractional amount; and a rounding and scaling circuit operable to modify the value indicating the fractional amount to conform to a step size implementable by the data clock phase control circuit to yield the phase amount corresponding to the fractional amount.