Patent ID: 8077807
Filing Date: 2011-12-13
Classification: H04L

Abstract:
1. A method, comprising: generating a local clock signal; receiving, responsive to the local clock signal, at a local device an incoming data signal from a host device, the host device being configured to generate the incoming data signal based on a target frequency; extracting timing information from the incoming data signal; determining offset information based on the timing information; generating a receive clock signal responsive to the offset information and the local clock signal, wherein receiving the incoming data signal comprises using the receive clock signal; generating a transmit clock signal based on the offset information and the local clock signal; generating, at the local device, an outgoing data signal to the host device, based on the transmit clock signal and a local data signal, such that a clock drift associated with the outgoing data signal is within a clock drift tolerance of the host device; and identifying one or more changes in the target frequency based on a spread spectrum clock (SSC) modulation associated with the incoming data signal, wherein generating the transmit clock signal is responsive to the one or more changes in the target frequency.