Integrated circuit and signal transmission method thereof
AssigneeRealtek Semiconductor Corp.
InventorLien-Hsiang Sung
Life of this patent
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Abstract
An integrated circuit and a signal transmission method thereof are provided. The integrated circuit includes a first power domain, a second power domain, and a weakly pull circuit. The first power domain is powered by a first power source, the second power domain is powered by a second power source, and the second power domain transmits a signal to the first power domain through a transmission path. The weakly pull circuit is signally connected to the transmission path. When the second power domain is in a power-off mode, the weakly pull circuit maintains the transmission path stably at a logic level to prevent unknown signals from entering the first power domain from the second power domain and disturbing the normal operation of the first power domain.
Claims15
An integrated circuit, comprising:
- a first power domain powered by a first power source;
- a second power domain powered by a second power source, the second power domain transmitting a signal to the first power domain through a transmission path;
- and
- a weakly pull circuit signally connected to the transmission path, when the second power domain is in a power-off mode, the weakly pull circuit maintaining the transmission path stably at a logic level.
A signal transmission method, applicable to an integrated circuit, the integrated circuit comprising a first power domain and a second power domain, and the signal transmission method comprising:
- supplying, by a first power source, power to the first power domain, and supplying, by a second power source, power to the second power domain;
- transmitting, by the second power domain, a signal to the first power domain through a transmission path;
- and
- when the second power domain is in a power-off mode, maintaining, by a weakly pull circuit, the transmission path stably at a logic level.
Dependencies are inferred from the claim text.