PUDI Lineup Control for PVT-Adaptive Linear Equalization

The patent divides the equalization system into multiple PUDI groups, where each group contains multiple PUDIs with individually controllable PFETs and NFETs. This segmentation enables precise control over transistor operations by selectively enabling or disabling specific transistors within groups, thereby addressing PVT and aging variations at a fine-grained level while maintaining manageable system complexity through modular organization.

The patent implements dynamic control mechanisms including a PVTA-adaptive controller and lineup setter that continuously adjust transistor configurations based on detected PVT and aging conditions. The system dynamically selects optimal transistor lineups from pre-defined sets and adjusts equalization parameters in real-time, transforming the static equalization system into an adaptive one that maintains high manufacturing precision under varying conditions.

The patent pre-defines multiple transistor lineups corresponding to different PVT and aging conditions before operation. The lineup setter stores these pre-configured transistor combinations and rapidly selects the appropriate lineup based on current conditions detected by the PVTA-adaptive controller. This preliminary preparation reduces the complexity of real-time decision-making while maintaining high reliability through condition-specific optimization.

The patent creates multiple copies of the PUDI structure with identical internal configurations but different controllability characteristics. Each PUDI group contains replicated transistor pairs (PFETs and NFETs) that can be independently enabled or disabled. This copying approach allows the system to achieve high reliability through redundancy and selection diversity while managing complexity by using standardized modular units.

The patent implements a self-service mechanism where the PVTA-adaptive controller automatically detects PVT and aging conditions and the lineup setter autonomously selects and configures the optimal transistor lineup without external intervention. The system self-adjusts power consumption by dynamically enabling or disabling transistors based on operational conditions, thereby reducing power usage while eliminating the operational burden of manual transistor management.

The patent incorporates feedback loops where the PVTA-adaptive controller continuously monitors system performance and PVT conditions, then feeds this information back to the lineup setter which adjusts transistor configurations accordingly. This closed-loop feedback mechanism automates the complex process of transistor selection and configuration, making the system easy to operate while achieving optimal power consumption through condition-based transistor enabling.