Abstract: A strobe signal interval detection circuit may include an oscillator configured to generate a periodic signal at a preset cycle determined through a delay time of a delay circuit. The delay time of the delay circuit may be configured by modeling a path traveled by a strobe signal being transmitted to a data latch. The strobe signal interval detection circuit may include a counter configured to count the periodic signal and generate strobe interval information.

Abstract: An impedance control circuit includes a pull-up code generator configured to generate pull-up impedance control codes using a voltage of a first node, a pull-up impedance unit configured to pull-up-drive the first node in response to the pull-up impedance control codes, a plurality of dummy impedance units enabled in response to respective select signals and each configured to pull-up-drive a second node in response to the pull-up impedance control codes, a pull-down code generator configured to generate pull-down impedance control codes using a voltage of the second node, and a plurality of pull-down impedance units enabled in response to the respective select signals and each configured to pull-down-drive the second node in response to the pull-down impedance control codes.

Abstract: An impedance control circuit includes a pull-up code generator configured to generate pull-up impedance control codes using a voltage of a first node, a pull-up impedance unit configured to pull-up-drive the first node in response to the pull-up impedance control codes, a plurality of dummy impedance units enabled in response to respective select signals and each configured to pull-up-drive a second node in response to the pull-up impedance control codes, a pull-down code generator configured to generate pull-down impedance control codes using a voltage of the second node, and a plurality of pull-down impedance units enabled in response to the respective select signals and each configured to pull-down-drive the second node in response to the pull-down impedance control codes.

Abstract: An impedance adjusting device includes a calibration unit configured to generate an impedance code for adjusting a termination impedance value, a plurality of termination units configured to be enabled by resistance selection information and terminate an interface node in response to the impedance code, a resistance providing unit coupled in parallel to the plurality of termination units and configured to provide a resistance in response to the resistance selection information, and a selection signal generation unit configured to generate the resistance selection information according to a target impedance value.

Abstract: An impedance adjusting device includes a calibration unit configured to generate an impedance code for adjusting a termination impedance value, a plurality of termination units configured to be enabled by resistance selection information and terminate an interface node in response to the impedance code, a resistance providing unit coupled in parallel to the plurality of termination units and configured to provide a resistance in response to the resistance selection information, and a selection signal generation unit configured to generate the resistance selection information according to a target impedance value.

Abstract: An impedance adjusting device includes: a calibration node; a comparison unit configured to compare a reference voltage with a voltage of the calibration node; a counting unit configured to generatean impedance code according to a comparison result of the comparison unit; a reference impedance unit having an impedance value according to the impedance code and connected to the calibration node; a storage unit configured to store the comparison result of the comparison unit upon the generation of the impedance code being completed; an interface node; and a termination unit configured to terminate the interface node, the termination unit including a plurality of parallel resistors configured to be turned on/off according to the impedance code, and a parallel resistor configured to be turned on/off according to a value stored in the storage unit.

Abstract: An impedance adjusting device includes: a calibration node; a comparison unit configured to compare a reference voltage with a voltage of the calibration node; a counting unit configured to generate an impedance code according to a comparison result of the comparison unit; a reference impedance unit having an impedance value according to the impedance code and connected to the calibration node; a storage unit configured to store the comparison result of the comparison unit upon the generation of the impedance code being completed; an interface node; and a termination unit configured to terminate the interface node, the termination unit including a plurality of parallel resistors configured to be turned on/off according to the impedance code, and a parallel resistor configured to be turned on/off according to a value stored in the storage unit.