Methods and Systems for Reducing Supply and Termination Noise

摘要

Described is a communication system in a first integrated circuit (IC) communicates with a second IC via single-ended communication channels. A bidirectional reference channel extends between the first and second ICs and is terminated on both ends. The termination impedances at each end of the reference channel support different modes for communicating signals in different directions. The termination impedances for the reference channel can be optimized for each signaling direction.

主权项

1. An integrated circuit comprising:
a reference pad to exhibit a reference signal external to the integrated circuit; and a reference termination element coupled to the reference pad, the reference termination element exhibiting a first termination impedance in a transmit mode and a second termination impedance in a receive mode.