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US 8,577,666 B2Granted
Clock synchronization in a modular circuit emulation system
AssigneeViXS Systems, Inc.
InventorsHualiang Ni, Ahmad R. Moghaddam, Cecil E. King
Life of this patent
Estimating the term…
Abstract
A modular circuit emulation system includes a global clock generator that generates a plurality of clock signals. A plurality of emulation boards each include at least one programmable circuit and a clock buffer. The clock buffer generates at least one synchronized clock signal for clocking the programmable circuit or circuits, based on at least one of the plurality of global clock signals.
Claims16
A modular circuit comprising:
- a global clock generator, that generates a plurality of clock signals including a fast clock and a slow clock, wherein the slow clock is slower than the fast clock;
- and
- a plurality of circuit portions, coupled to the global clock generator, each of the circuit portions including at least one programmable circuit and a phase correction module that receives the fast clock and the slow clock and generates a recovered slow clock that is edge-aligned based on the fast clock and that is phase-aligned based on the slow clock.
A modular circuit comprising:
- a global clock generator, that generates a plurality of clock signals including a fast clock and a slow clock, wherein the slow clock is slower than the fast clock;
- and
- a plurality of circuit portions, coupled to the global clock generator, each of the circuit portions including at least one programmable circuit and a phase correction module that receives the fast clock and the slow clock and generates a recovered slow clock that is edge-aligned based on the fast clock and that is phase-aligned based on the slow clock;
- and
- a system backplane, coupled to the plurality of circuit portions and the global clock generator, that carries serialized data produced by a serialization module of the at least one programmable circuit of one of the plurality of circuit portions to the at least one programmable circuit of another one of the plurality of circuit portions.
2 more elements
Dependencies are inferred from the claim text.