发明授权
- 专利标题: Write-side calibration for data interface
- 专利标题(中): 数据接口的写入侧校准
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申请号: US11735394申请日: 2007-04-13
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公开(公告)号: US07706996B2公开(公告)日: 2010-04-27
- 发明人: Yan Chong , Chiakang Sung , Joseph Huang , Michael H. M. Chu
- 申请人: Yan Chong , Chiakang Sung , Joseph Huang , Michael H. M. Chu
- 申请人地址: US CA San Jose
- 专利权人: Altera Corporation
- 当前专利权人: Altera Corporation
- 当前专利权人地址: US CA San Jose
- 代理机构: Townsend and Townsend and Crew LLP
- 代理商 David B. Raczkowski
- 主分类号: G06F11/00
- IPC分类号: G06F11/00 ; G06F19/00
摘要:
Circuits, methods and apparatus are provided to reduce skew among signals being provided or transmitted by a data interface. Signal path delays are varied such that signals transmitted by a memory interface are calibrated or aligned with each other along a rising and/or falling edge. For example, self-calibration, external circuitry, or design tools can provide skew adjustment of each output channel by determining one or more delays for each output channel path. When aligning multiple edges, the edges of the output signals may be aligned independently, e.g., using edge specific delay elements.
公开/授权文献
- US20070277071A1 Write-Side Calibration for Data Interface 公开/授权日:2007-11-29