Interface circuit for coupling between logic circuit domains

Details Interface circuit for coupling between logic circuit domains Interface circuit for coupling between logic circuit domains

2006-05-16

2006-05-16

Tan, Vibol (Department: 2819)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S203000, C326S098000

Reexamination Certificate

active

07046063

ABSTRACT:
CMOS circuitry is partitioned into first and second logic circuit domains. The first logic circuit domain may be optionally a cuttable domains (C_Domains) where circuitry has power supply gating to reduce leakage power and non-cuttable domains (NC_Domains) where circuitry does not have power supply gating. Each output that couples signals from one logic circuit domain to another logic circuit is interfaced with a C_driver and a S_keeper which automatically assure that the output state is held when circuitry is power-gated put to reduce leakage power. The S_keeper and C_driver have low leakage circuits that maintain signal states and are not used for high speed operation.

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Kimiyoshi Usami et al. “Automated Selective Multi-Threshold Design For Ultra-Low Standby Applications,”IEEE ISLPED, Aug. 2002, pp. 202-206.

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