Patent ID: 9025715
Filing Date: 2015-05-05
Classification: G06F,H03L,H04L

Abstract:
1. A storage device configured to communicate with a host according to a serial communication standard, the storage device comprising: a receiver configured to receive host data transmitted by the host, wherein the host data is transmitted by the host using a first clock generator having a first accuracy; a clock data recovery circuit configured to determine a first frequency of the host data transmitted by the host; a phase locked loop configured to generate a local phase corresponding to a local clock signal, wherein the local clock signal is generated by a second clock generator having a second accuracy that is less than the first accuracy; a frequency offset calculator configured to generate, based on the first frequency of the host data transmitted by the host and the local phase corresponding to the local clock signal, a frequency offset corresponding to a difference between (i) the first frequency of the host data transmitted by the host and (ii) a second frequency of the local clock signal; an accumulator configured to generate a phase offset based on the frequency offset, wherein the phase offset corresponds to a difference between (i) the local phase corresponding to the local clock signal and (ii) a phase corresponding to the host data transmitted by the host; an interpolator configured to a transmitter configured to transmit device data to the host in accordance with the compensated local clock signal.