公开(公告)号：US09300291B2

公开(公告)日：2016-03-29

申请号：US14499275

申请日：2014-09-29

Applicant: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.

Inventor： Bruce Millar

IPC: H03K17/16 ,  H03K19/003 ,  H03K19/00 ,  G11C5/06 ,  G11C7/02 ,  G11C7/10 ,  G11C11/4093 ,  H03H7/38 ,  H04L25/02 ,  H03H17/00

CPC classification number: H03K19/0005 ,  G11C5/063 ,  G11C7/02 ,  G11C7/1051 ,  G11C7/1057 ,  G11C7/1078 ,  G11C7/1084 ,  G11C11/4093 ,  G11C2207/2254 ,  H03H7/38 ,  H03H17/0045 ,  H04L25/0278 ,  H04L25/028

Abstract: A system and method of performing off chip drive (OCD) and on-die termination (ODT) are provided. A common pull-up network composed of transistors and a common pull-down network composed of transistors are employed to implement both of these functions. In drive mode, the pull-up network is configured to produce a calibrated drive impedance when an “on” output is to be generated, and the pull-up network is configured to produce a calibrated drive impedance when an “off” output is to be generated. In termination mode, the pull-up network and the pull-down network are configured to produce a calibrated pull-up resistance and pull-down resistance respectively such that together, they form a split termination.

Abstract translation: 提供了执行片外驱动（OCD）和片上终端（ODT）的系统和方法。 由晶体管组成的公共上拉网络和由晶体管组成的公共下拉网络被采用来实现这两个功能。 在驱动模式下，上拉网络被配置为当要产生“开”输出时产生校准的驱动阻抗，并且当“关”输出为“关”时，上拉网络被配置为产生校准的驱动阻抗 生成。 在终端模式中，上拉网络和下拉网络被配置为分别产生校准的上拉电阻和下拉电阻，使得它们一起形成分离终端。

公开(公告)号：US10985757B2

公开(公告)日：2021-04-20

申请号：US16795786

申请日：2020-02-20

Applicant: Conversant Intellectual Property Management Inc.

Inventor： Bruce Millar

IPC: H03K19/00

Abstract: A system and method of performing off chip drive (OCD) and on-die termination (ODT) are provided. A common pull-up network composed of transistors and a common pull-down network composed of transistors are employed to implement both of these functions. In drive mode, the pull-up network is configured to produce a calibrated drive impedance when an “on” output is to be generated, and the pull-up network is configured to produce a calibrated drive impedance when an “off” output is to be generated. In termination mode, the pull-up network and the pull-down network are configured to produce a calibrated pull-up resistance and pull-down resistance respectively such that together, they form a split termination.

公开(公告)号：US10608634B2

公开(公告)日：2020-03-31

申请号：US15457680

申请日：2017-03-13

Applicant: Conversant Intellectual Property Management Inc.

Inventor： Bruce Millar

IPC: H03K17/16 ,  H03K19/00

Abstract: A system and method of performing off chip drive (OCD) and on-die termination (ODT) are provided. A common pull-up network composed of transistors and a common pull-down network composed of transistors are employed to implement both of these functions. In drive mode, the pull-up network is configured to produce a calibrated drive impedance when an “on” output is to be generated, and the pull-up network is configured to produce a calibrated drive impedance when an “off” output is to be generated. In termination mode, the pull-up network and the pull-down network are configured to produce a calibrated pull-up resistance and pull-down resistance respectively such that together, they form a split termination.