A 5Gb/s Pulse Signaling Interface for Low Power On-Chip Data Communication

Abstract

This paper presents an on-chip pulse signaling scheme for low power on-chip interconnection. Both near-end and far-end employ equalization circuits to compensate the high frequency attenuation of long channel. The on-chip data bus is designed by co-planar micro-strip line in Metal 5 and Metal 6 and with a characteristic impedance of 75 ohm. The receiver uses self-biased inverters and transmission gates to design inductive-peaking and non-clock hysteresis amplifiers. In 0.13um CMOS process, the proposed I/O occupies a total area of 0.07mm(2). At a bit rate of 5Gbps, the accumulated peak-to-peak jitter of overall I/O system and a 5mm of channel length is 76ps. And it consumes 8mW of power under 1.2V supply voltage or with a power efficiency of 0.32pJ/bit/mm.