Methods and apparatuses for validating AC I/O loopback tests...

Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design

Reexamination Certificate

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C716S030000, C716S030000, C716S030000

Reexamination Certificate

active

10846721

ABSTRACT:
Embodiments of the invention provide a logic simulation having a controllable delay model implemented therein that may be used to validate AC I/O loopback design in a pre-silicon environment by introducing delay models that allow the logic simulators to simulate analog behavior. For one embodiment of the invention, a fixed processor ratio is selected and delay statements of the hardware description language correspond to a specific time delay. These fixed values provide the ability to accurately determine and adjust delay in an analog simulation.

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Akita et al., A Novel Analog Mirror Type DLL suitable for Low Voltage Operation with Self-Calibration Method, 2000, IEEE, pp. 343-344.

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