Abstract: Systems and methods for dynamically adjusting operation of a circuit within a semiconductor device are described herein. At least some illustrative embodiments include a system that includes a matching circuit including a first plurality of switching devices coupled to each other in parallel and not coupled in parallel to a resistive device, a driver circuit including a plurality of driver devices (the driver circuit adjusted based upon which of the switching devices are enabled), and processing logic that couples to the matching and driver circuits. The processing logic derives a binary value indicative of which of the switching devices are to be enabled, the binary value reflecting one or more process corners associated with the switching devices, and not reflecting one or more process corners associated with the resistive device. The processing logic further maps the binary value to a control value used to adjust the driver circuit.

Abstract: A method of operating an electronic device having an output driver with on die termination legs ODT, and non-ODT legs, includes the step of selectively tri-stating tuning transistors (ZQ trim devices) in the legs as a function of the operational state of the output driver. The tri-stating step is performed such that when a leg is not being utilized, the tuning transistors in the unused leg are placed in a tri-state. For example, during an ODT mode of the output driver, the tuning transistors in the non-ODT legs are tri-stated. During a READ mode of the output driver, the tuning transistors in the ODT legs are tri-stated. During a HiZ mode of the output driver, the tuning transistors in both legs are tri-stated. Tri-stating the tuning transistors in the unused output driver legs can reduce DQ pin capacitance by a total of approximately (Cgd+Cgs+Cgb).

Abstract: Systems and methods for dynamically adjusting operation of a circuit within a semiconductor device are described herein. At least some illustrative embodiments include a system that includes a matching circuit including a first plurality of switching devices coupled to each other in parallel and not coupled in parallel to a resistive device, a driver circuit including a plurality of driver devices (the driver circuit adjusted based upon which of the switching devices are enabled), and processing logic that couples to the matching and driver circuits. The processing logic derives a binary value indicative of which of the switching devices are to be enabled, the binary value reflecting one or more process comers associated with the switching devices, and not reflecting one or more process comers associated with the resistive device. The processing logic further maps the binary value to a control value used to adjust the driver circuit.

Abstract: A method of operating an electronic device having an output driver with on die termination legs ODT, and non-ODT legs, includes the step of selectively tri-stating tuning transistors (ZQ trim devices) in the legs as a function of the operational state of the output driver. The tri-stating step is performed such that when a leg is not being utilized, the tuning transistors in the unused leg are placed in a tri-state. For example, during an ODT mode of the output driver, the tuning transistors in the non-ODT legs are tri-stated. During a READ mode of the output driver, the tuning transistors in the ODT legs are tri-stated. During a HiZ mode of the output driver, the tuning transistors in both legs are tri-stated. Tri-stating the tuning transistors in the unused output driver legs can reduce DQ pin capacitance by a total of approximately (Cgd+Cgs+Cgb).

Abstract: A method of operating an electronic device having an output driver with on die termination legs ODT, and non-ODT legs, includes the step of selectively tri-stating tuning transistors (ZQ trim devices) in the legs as a function of the operational state of the output driver. The tri-stating step is performed such that when a leg is not being utilized, the tuning transistors in the unused leg are placed in a tri-state. For example, during an ODT mode of the output driver, the tuning transistors in the non-ODT legs are tri-stated. During a READ mode of the output driver, the tuning transistors in the ODT legs are tri-stated. During a HiZ mode of the output driver, the tuning transistors in both legs are tri-stated. Tri-stating the tuning transistors in the unused output driver legs can reduce DQ pin capacitance by a total of approximately (Cgd+Cgs+Cgb).