A wireless real-time on-chip bus trace system

A 480Mb/s wireless real-time bus trace system with a pulse-based inductive coupling channel array was developed using a 0.25μm CMOS digital process. The size and pitch of the inductor array are determined by numerical calculation to optimize the tradeoff between the channel coupling, crosstalk, and alignment tolerance. A low-power quasi-synchronous system is proposed to obtain an enough timing margin for RX pulse detection under the presence of the clock skew.