发明名称 |
Dynamic dual control on-die termination |
摘要 |
Controlling on-die termination on a bi-directional single-ended data bus carrying data between a controller and a memory device. The controller and the memory device respectively include input termination pull-ups and input termination pull-downs. An enabled state is maintained for the input termination pull-downs of the controller except when data is driven on the bi-directional single ended data bus by the controller. Similarly, an enabled state is maintained for the set of input termination pull-downs of the memory device except when data is driven on the bi-directional single ended data bus by the memory device. In conjunction with this, a disabled state is maintained for the input termination pull-ups of the memory device (or controller) except when data is being received from the bi-directional single-ended data bus by the memory device (or controller).
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申请公布号 |
US7595657(B2) |
申请公布日期 |
2009.09.29 |
申请号 |
US20080078782 |
申请日期 |
2008.04.04 |
申请人 |
SONY CORPORATION;SONY ELECTRONICS INC. |
发明人 |
HAIG ROBERT;CHUANG PATRICK T. |
分类号 |
H03K17/16;H03K19/003 |
主分类号 |
H03K17/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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