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31. 发明申请

WO0221782A2 METHOD AND APPARATUS FOR CALIBRATING A MULTI-LEVEL CURRENT MODE DRIVER AND FOR GENERATING A MULTI-LEVEL REFERENCE VOLTAGE IN SYSTEMS USING EQUALIZATION OR CROSSTALK CANCELLATION 审中-公开
标题翻译：用于校准多级电流模式驱动器的方法和装置，以及使用均衡或CROSSTALK取消在系统中产生多级参考电压
公开(公告)号：WO0221782A2
公开(公告)日：2002-03-14
申请号：PCT/US0127478
申请日：2001-09-05
申请人： RAMBUS INC , WERNER CARL , HOROWITZ MARK , CHAU PARK , BEST SCOTT , LIAW H J , SIDIROPOULOS STEFANOS , ZERBE JARED LEVAN , KIM JUN
发明人： WERNER CARL , HOROWITZ MARK , CHAU PARK , BEST SCOTT , LIAW H J , SIDIROPOULOS STEFANOS , ZERBE JARED LEVAN , KIM JUN
IPC分类号： H04L25/02 , H04L25/03 , H04L25/08 , H04L25/49
CPC分类号： H04L25/0282 , H04L25/0272 , H04L25/0298 , H04L25/03878 , H04L25/08 , H04L25/4902
摘要： The current controller includes a multi-level voltage reference and receives at least onesource calibration signal. A comparator is coupled by a coupling network t the multi-level voltage reference and the source calibration signal. A selected voltage is applied from the multi-level voltage reference and a selected source calibration signal is applied to the comparator. Further, system and method are shown for generation of at least one reference voltage level in a bus system. A reference voltage generator on a current driver includes at least one reference voltage level, at least one control signal, and an active device. The active device is coupled to the at least one control signal, such as a current signal, and a selected reference voltage of the at least one reference voltage level. The active device is arranged to shift the at least one reference voltage level based on the at least one current control signal such as an equalization signal, a crosstalk signal, or the combination thereof, employed on the current driver. Further, low-latency equalization mechanisms for multi-PAM communication systems are disclosed that reduce delay and complexity in signal correction mechanisms. The equalization mechanisms tap into input signals for a multi-PAM signal driver, and compensate for attenuation along a signal transmission line, crosstalk between adjacent lines, and signal reflections due to impedance discontinuities along the line.
摘要翻译：电流控制器包括多电平电压基准并且接收至少一个源校准信号。比较器通过耦合网络耦合多电平电压基准和源校准信号。从多电平参考电压施加所选择的电压，并且将选择的源校准信号施加到比较器。此外，示出了在总线系统中产生至少一个参考电压电平的系统和方法。电流驱动器上的参考电压发生器包括至少一个参考电压电平，至少一个控制信号和有源器件。有源器件耦合到至少一个控制信号，例如电流信号，以及所选择的至少一个参考电压电平的参考电压。有源器件被布置为基于在当前驱动器上采用的至少一个电流控制信号（例如均衡信号，串扰信号或其组合）来移位至少一个参考电压电平。此外，公开了用于多PAM通信系统的低延迟均衡机制，其减少信号校正机制中的延迟和复杂性。均衡机制分为用于多PAM信号驱动器的输入信号，并且补偿沿着信号传输线的衰减，相邻线之间的串扰以及由于沿线的阻抗不连续性引起的信号反射。

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