eUSB2 Repeater Power State Management

The patent applies dynamics by making the power consumption characteristics changeable based on operational state. Instead of maintaining fixed bias conditions in standby state, the system dynamically adjusts internal node voltages and bias currents based on whether a packet is expected within the current HS interval, allowing low power consumption during long idle periods while maintaining quick transition capability when packets are expected.

The patent changes physical parameters (bias currents, internal node voltages) based on the operational context. The system monitors packet timing and adjusts bias loop parameters dynamically - maintaining normal bias levels when quick transition is needed, and reducing bias levels when extended idle period is anticipated, thus resolving the contradiction between quick transition capability and standby power consumption.

The patent uses preliminary action by detecting downstream packets and predicting whether upstream packets will be transmitted within the current HS interval. Based on this prediction, the system pre-adjusts bias conditions before the actual transmission occurs. If a packet is expected, the system maintains ready-state bias conditions; if no packet is expected, the system enters deep idle mode, thus avoiding unnecessary power consumption while ensuring protocol compliance when packets do occur.

The patent implements periodic monitoring of packet timing and periodic adjustment of power states. The system continuously monitors the HS interval counter and packet timing, periodically transitioning between power states based on predicted packet arrival. This periodic action allows the system to maintain protocol compliance through timely transitions while minimizing power consumption during extended idle periods between packet bursts.