Patent ID: 8116321
Filing Date: 2012-02-14
Classification: G06F

Abstract:
1. A router comprising: at least a first router portion for routing asynchronous signals, said first router portion having first and second clock signal inputs for receiving first and second clock signals which each toggle at a clock rate, respectively; a clock selector circuit within the at least first router portion for selecting from among said first and second clock signal, and an oscillator signal, as a common output clock signal for the at least first router portion, based in part on whether at least one of the first and second clock signals has toggled; and a safe clock multiplexer system for detecting whether each of the first and second clock signals has toggled relative to the oscillator signal, and if not, replacing said each non-toggling signal with a signal at a fixed logic state to maintain synchronism of the output clock signal relative to the first and second clock signals.