Patent ID: 7262632

Claim:
A system comprising: a first on-die signal source; a second on-die signal source; a network operable to distribute a reference signal to a die location proximal to the first on-die signal source and to a die location proximal to the second on-die signal source; a first signal transport path coupling the first on-die signal source and the reference signal to a first die output; a second signal transport path coupling the second on-die signal source and the reference signal to a second die output; a first multiplexer located proximal to the first on-die signal source, the first multiplexer being configured to select between a signal from the first on-die signal source and the reference signal; a second multiplexer located proximal to the second on-die signal source, the second multiplexer being configured to select between a signal from the second on-die signal source and the reference signal; and a third multiplexer configured to select between an output of the first multiplexer and an output of the second multiplexer, the third multiplexer having an output coupled to the first die output.