Systems, apparatuses and methods for synchronizing clock signals

摘要

An apparatus may include a first phase control circuit and/or a second phase control circuit. The first phase control circuit may compare the phase of the first clock signal with the phase of the second clock signal, and may control the phase of the first clock signal based on the result of the comparison. The second phase control circuit may control the phase of the second clock signal based on the result of the comparison output from the first phase control circuit. The first phase control circuit may control the phase of the first clock signal and/or the second phase control circuit may control the phase of the second clock signal such that they are synchronized with each other.