公开(公告)号：US09018973B2

公开(公告)日：2015-04-28

申请号：US13644388

申请日：2012-10-04

Applicant: Elpida Memory, Inc.

Inventor： Nakaba Kaiwa ,  Yutaka Ikeda

IPC: H03K19/003 ,  H03H7/40 ,  H04L25/02 ,  H03K21/38

CPC classification number: G01R35/005 ,  G01R19/0084 ,  G01R27/02 ,  H03H7/40 ,  H03K21/38 ,  H04L25/0278

Abstract: A device, comprising an output terminal; an output circuit coupled to the output terminal and having an adjustable impedance; and an impedance adjustment circuit adjusting stepwise the adjustable impedance so as to head toward a first reference impedance. The impedance adjustment circuit changes the adjustable impedance by a first amount when the adjustable impedance is within a first range, and changes the adjustable impedance by a second amount when the adjustable impedance is out of the first range. The first amount is smaller than the second amount.

Abstract translation: 一种装置，包括输出端子; 输出电路，其耦合到所述输出端子并具有可调阻抗; 以及阻抗调节电路，其逐步地调节可调阻抗以朝向第一参考阻抗。 当可调阻抗在第一范围内时，阻抗调节电路将可调阻抗改变第一量，并且当可调阻抗超出第一范围时，阻抗调节电路将可调阻抗改变第二量。 第一个数量小于第二个数量。

公开(公告)号：US20140097911A1

公开(公告)日：2014-04-10

申请号：US13644388

申请日：2012-10-04

Applicant: ELPIDA MEMORY, INC.

Inventor： Nakaba KAIWA ,  Yutaka Ikeda

IPC: H03H7/40

CPC classification number: G01R35/005 ,  G01R19/0084 ,  G01R27/02 ,  H03H7/40 ,  H03K21/38 ,  H04L25/0278

Abstract: A device, comprising an output terminal; an output circuit coupled to the output terminal and having an adjustable impedance; and an impedance adjustment circuit adjusting stepwise the adjustable impedance so as to head toward a first reference impedance. The impedance adjustment circuit changes the adjustable impedance by a first amount when the adjustable impedance is within a first range, and changes the adjustable impedance by a second amount when the adjustable impedance is out of the first range. The first amount is smaller than the second amount.

Abstract translation: 一种装置，包括输出端子; 输出电路，其耦合到所述输出端子并具有可调阻抗; 以及阻抗调节电路，其逐步地调节可调阻抗以朝向第一参考阻抗。 当可调阻抗在第一范围内时，阻抗调节电路将可调阻抗改变第一量，并且当可调阻抗超出第一范围时，阻抗调节电路将可调阻抗改变第二量。 第一个数量小于第二个数量。