发明授权
US07154302B2 Method and apparatus for selectably providing single-ended and differential signaling with controllable impedance and transition time
有权
用于可选择地提供具有可控阻抗和转换时间的单端和差分信号的方法和装置
- 专利标题： Method and apparatus for selectably providing single-ended and differential signaling with controllable impedance and transition time
- 专利标题（中）： 用于可选择地提供具有可控阻抗和转换时间的单端和差分信号的方法和装置
-
申请号： US10952921申请日： 2004-09-30
-
公开(公告)号： US07154302B2公开(公告)日： 2006-12-26
- 发明人: Scott Best , Chiping Yang
- 申请人： Scott Best , Chiping Yang
- 申请人地址： US CA Los Altos
- 专利权人： Rambus Inc.
- 当前专利权人： Rambus Inc.
- 当前专利权人地址： US CA Los Altos
- 代理机构： Hunton & Williams LLP
- 主分类号： H03K17/16
- IPC分类号： H03K17/16
摘要：
A method and apparatus for selectably providing single-ended and differential signaling with controllable impedance and transition time is provided. According to the method and apparatus, a differential signal can be transmitted over two wires or two single-ended signals can be transmitted over the two wires. According to the method and apparatus, termination may be selected among a single-reference termination, a center termination, or a high-impedance termination. Regardless of the type of termination selected, a capability for dynamic control of the termination impedance is provided. Moreover, an ability to change impedances of termination elements to maintain a desired termination impedance for both single-reference termination and center termination modes by shifting bits is provided. Also, a capability for dynamic control of transition times of signals is provided.