公开(公告)号：US20140119140A1

公开(公告)日：2014-05-01

申请号：US14066193

申请日：2013-10-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-Seok SEOL ,  Seung-Jun BAE ,  Ho-Sung SONG

IPC: H03K3/017 ,  G11C8/18 ,  G11C7/22

CPC classification number: G11C8/18 ,  G11C29/023 ,  G11C29/028 ,  H03K5/1565

Abstract: A duty cycle corrector includes a sensing unit, a pad unit, a fuse unit, and a driver unit. The sensing unit generates at least one sensing signal based on the sensed duty cycle ratio of an output signal. The pad unit outputs at least one decision signal based on the at least one sensing signal. The fuse unit generates a duty cycle control signal based on at least one received fuse control signal. The driver unit adjusts a duty cycle ratio of an input signal to generate the output signal based on the duty cycle control signal. The driver unit adjusts the duty cycle ratio of the input signal by adjusting a pull-up strength or a pull-down strength of the input signal based on the duty cycle control signal.

Abstract translation: 占空比校正器包括感测单元，衬垫单元，保险丝单元和驱动单元。 感测单元基于感测到的输出信号的占空比来产生至少一个感测信号。 垫单元基于至少一个感测信号输出至少一个判定信号。 熔丝单元基于至少一个接收的熔丝控制信号产生占空比控制信号。 驱动单元根据占空比控制信号来调整输入信号的占空比，生成输出信号。 驱动器单元通过基于占空比控制信号调整输入信号的上拉强度或下拉强度来调整输入信号的占空比。

公开(公告)号：US20140266299A1

公开(公告)日：2014-09-18

申请号：US14202323

申请日：2014-03-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-Seok SEOL ,  Seung-Jun BAE ,  Young-Soo SOHN ,  Ho-Sung SONG

IPC: H03K19/00

CPC classification number: H03K19/0005

Abstract: An on-die termination (ODT) circuit includes a calibration unit, an offset-code generating unit, an adder, and an ODT unit. The calibration unit generates a pull-up code and a pull-down code. The offset-code generates a pull-up offset code and a pull-down offset code based on a mode-register-set signal, the pull-up code, and the pull-down code. The adder adds the pull-up offset code and the pull-down offset code to the pull-up code and the pull-down code, respectively, and generates a pull-up calibration code and a pull-down calibration code. The ODT unit changes ODT resistance in response to the pull-up calibration code and the pull-down calibration code.

Abstract translation: 片上终端（ODT）电路包括校准单元，偏移码生成单元，加法器和ODT单元。 校准单元生成一个上拉代码和一个下拉代码。 偏移码基于模式寄存器设置信号，上拉代码和下拉码产生上拉偏移码和下拉偏移码。 加法器分别将上拉偏移代码和下拉偏移代码加到上拉代码和下拉代码，并产生一个上拉校准代码和一个下拉校准代码。 ODT单元根据上拉校准代码和下拉校准代码改变ODT电阻。