Output Driver Termination Circuit for Fast Low-Power Data I/O

The patent implements a dynamic termination function that is selectively activated only during data output operations. The termination circuit is controlled by a termination control signal that enables it to operate only when data needs to be output, rather than being permanently active. This dynamic activation allows the system to achieve high-speed data transmission when needed while avoiding continuous power consumption, thus resolving the contradiction between speed improvement and power consumption increase.

The termination function operates periodically or intermittently based on data output requirements rather than continuously. The termination control circuit activates the termination function only during specific time periods when data output occurs, and deactivates it during other periods. This periodic operation pattern enables the system to maintain high data transmission speed during output operations while significantly reducing overall power consumption by keeping the termination function inactive during non-output periods.

The patent implements a dynamic termination function that is selectively activated only during data output operations. The termination circuit is controlled by a termination control signal that enables it to operate only when data needs to be output, rather than being permanently active. This dynamic activation allows the system to achieve high-speed data transmission when needed while avoiding continuous power consumption, thus resolving the contradiction between speed improvement and power consumption increase.

The termination function is automatically activated and deactivated based on the operational state of the data output apparatus. When data output operations are detected, the termination control circuit automatically enables the termination function without requiring external intervention. This self-service mechanism ensures that the termination function operates precisely when needed for high-speed transmission while remaining inactive during other operations to maintain low power consumption, eliminating the need for complex external control.

The patent merges the termination control function with the existing data output control logic. The termination control signal is generated using the same control signals that already exist for data output operations, specifically utilizing the relationship between the data output enable signal and the inverted data output enable signal. By combining the termination control function with existing control logic rather than adding a completely separate control system, the patent achieves high-speed data transmission with minimal increase in device complexity.

The termination control circuit is designed to serve multiple functions: it controls the termination function during data output operations and simultaneously leverages existing control signals for its operation. The circuit uses the data output enable signal and its inverted version, which are already present in the system, to generate the termination control signal. This multi-functional design allows the termination control circuit to achieve speed improvement without requiring dedicated separate control pathways, thereby minimizing the increase in device complexity.

The patent implements a localized output data level control function that specifically targets the output terminal region where voltage variations occur. Rather than redesigning the entire circuit, the invention adds a focused control mechanism at the output stage that adjusts the data level based on the actual output voltage conditions. This local quality approach maintains the simplicity of the overall circuit design while providing targeted stabilization at the critical output point, preventing data errors caused by power supply variations without increasing overall device complexity significantly.

The output data level control unit operates with feedback from the actual output data voltage level. It monitors the output voltage and dynamically adjusts the data level to compensate for variations caused by power supply fluctuations. This feedback mechanism ensures that even when power supply voltage varies, the output data maintains stable and reliable levels. The feedback-based control achieves reliability improvement without requiring a complete redesign of the circuit architecture, thus balancing device complexity and output stability.