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公开(公告)号：US08461882B2
公开(公告)日：2013-06-11
申请号：US13255844
申请日：2010-05-07
IPC分类号： H03K3/00
CPC分类号： H03K19/018585 , H03K19/018528
摘要： A driver supports differential and single-ended signaling modes. Complementary transistors with a common tail node are provided with complementary input signals in the differential mode. A current source coupled to the tail node maintains a relatively high tail impedance and a constant tail current in the differential mode. The tail node is set to a low impedance in single-ended modes to decouple the two transistors, allowing them to amplify uncorrelated input signals. The current source thaws multiple current levels in the single-ended mode to compensate for changes in tail current that result from changes in the relative values of the uncorrelated data in the single-ended modes. A termination block provides termination resistance in the differential mode, pull-up transistors in a single-ended mode that employs push-pull drivers, and is omitted in a single-ended mode that lacks driver-side termination.
摘要翻译： 驱动程序支持差分和单端信令模式。 具有公共尾节点的互补晶体管在差分模式下被提供有互补输入信号。 耦合到尾节点的电流源在差分模式下保持相对较高的尾部阻抗和恒定的尾部电流。 尾端节点在单端模式下设置为低阻抗，以对两个晶体管进行去耦，从而使它们能够放大不相关的输入信号。 当前的源解决了单端模式下的多个电流电平，以补偿由单端模式中不相关数据的相对值变化引起的尾电流变化。 端接模块提供差分模式下的终端电阻，采用推挽驱动器的单端模式的上拉晶体管，并且在缺少驱动器侧端接的单端模式下被省略。
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公开(公告)号：US20110316590A1
公开(公告)日：2011-12-29
申请号：US13255844
申请日：2010-05-07
IPC分类号： H03K3/00
CPC分类号： H03K19/018585 , H03K19/018528
摘要： A driver supports differential and single-ended signaling modes. Complementary transistors with a common tail node are provided with complementary input signals in the differential mode. A current source coupled to the tail node maintains a relatively high tail impedance and a constant tail current in the differential mode. The tail node is set to a low impedance in single-ended modes to decouple the two transistors, allowing them to amplify uncorrelated input signals. The current source thaws multiple current levels in the single-ended mode to compensate for changes in tail current that result from changes in the relative values of the uncorrelated data in the single-ended modes. A termination block provides termination resistance in the differential mode, pull-up transistors in a single-ended mode that employs push-pull drivers, and is omitted in a single-ended mode that lacks driver-side termination.
摘要翻译： 驱动程序支持差分和单端信令模式。 具有公共尾节点的互补晶体管在差分模式下被提供有互补输入信号。 耦合到尾节点的电流源在差分模式下保持相对较高的尾部阻抗和恒定的尾部电流。 尾端节点在单端模式下设置为低阻抗，以对两个晶体管进行去耦，从而使它们能够放大不相关的输入信号。 当前的源解决了单端模式下的多个电流电平，以补偿由单端模式中不相关数据的相对值变化引起的尾电流变化。 端接模块提供差分模式下的终端电阻，采用推挽驱动器的单端模式的上拉晶体管，并且在缺少驱动器侧端接的单端模式下被省略。
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