Patent ID: 7424275

Claim:
A mobile phone comprising: a radio frequency (RF) transceiver configured to operate on a radio frequency signal; a digital processing circuit coupled to the RF transceiver, wherein the digital processing circuit is clocked by a digital clock signal having an associated clock period; wherein the digital processing circuit is disabled during an active mode of operation of the RF transceiver; a sample clock generation circuit configured to receive an input clock having a fixed phase relationship with respect to the digital clock signal, wherein sample clock generation circuit is configured to generate a sample clock having a first sampling edge corresponding to a first relative offset within the clock period and a subsequent sampling edge corresponding to a different relative offset within the clock period; and a sampling circuit coupled to the sample clock generation circuit and configured to sample an audio signal in response to the first sampling edge and to sample the designated signal in response to the subsequent sampling edge; wherein the RF transceiver, the digital processing circuit, and the sampling circuit are fabricated on a single integrated circuit chip.