Advanced clock distribution mechanism for circuit emulation...

Details Advanced clock distribution mechanism for circuit emulation... Advanced clock distribution mechanism for circuit emulation...

2011-04-19

2011-04-19

Ton, Dang T (Department: 2475)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C713S500000

Reexamination Certificate

active

07929574

ABSTRACT:
A clock distribution mechanism for circuit emulation applications, and related method, including one or more of the following: a plurality of digitally controlled oscillators, each of the plurality of digitally controlled oscillators receiving one or more Ethernet packets and generating a recovered clock from the one or more Ethernet packets; a multiplexer for receiving the recovered clocks generated by the plurality of digitally controlled oscillators, selecting a one of the recovered clocks generated by the plurality of digitally controlled oscillators, and outputting the selected one of the recovered clocks; a normalizer that receives a frequency of the selected one of the recovered clocks and generates a normalized frequency output based on the received frequency of the selected one of the recovered clocks and outputs the normalized frequency output; a clock source selector for receiving a plurality of input clock sources, one of the input clock sources being the normalized frequency output of the normalizer, the clock source selector selecting the normalized frequency output from among the plurality of input clock sources and transmitting the selected normalized frequency to a node; and one or more nodes for receiving the selected normalized frequency.

REFERENCES:
patent: 5903746 (1999-05-01), Swoboda et al.
patent: 5910753 (1999-06-01), Bogdan
patent: 6807194 (2004-10-01), Muto
patent: 7043657 (2006-05-01), Yang et al.
patent: 7660330 (2010-02-01), Shmilovici
patent: 2007/0222529 (2007-09-01), Carichner et al.

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