发明授权
US07380052B2 Reuse of functional data buffers for pattern buffers in XDR DRAM
失效
在XDR DRAM中重用图形缓冲区的功能数据缓冲区
- 专利标题： Reuse of functional data buffers for pattern buffers in XDR DRAM
- 专利标题（中）： 在XDR DRAM中重用图形缓冲区的功能数据缓冲区
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申请号： US10992378申请日： 2004-11-18
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公开(公告)号： US07380052B2公开(公告)日： 2008-05-27
- 发明人: Mark David Bellows , Kent Harold Haselhorst , Paul Allen Ganfield , Tolga Ozguner
- 申请人： Mark David Bellows , Kent Harold Haselhorst , Paul Allen Ganfield , Tolga Ozguner
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 代理商 Francis Lammes; Stephen J. Walder, Jr.; D'Ann N. Rifai
- 主分类号： G06F12/00
- IPC分类号： G06F12/00
摘要：
A method, an apparatus, and a computer program are provided to reuse functional data buffers. With Extreme Data Rate (XDR™) Dynamic Random Access Memory (DRAM), test patterns are employed to dynamically calibrate data with the clock. To perform this task, data buffers are employed to store data and commands for the calibration patterns. However, there are different procedures and requirements for transmission and reception calibrations. Hence, to reduce the amount of hardware needed to perform transmission and reception calibrations, the data buffers employ additional front end circuitry to reuse the buffers for both tasks.
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