发明授权
- 专利标题: Method for compensating for variations in data timing
- 专利标题(中): 补偿数据时序变化的方法
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申请号: US12901579申请日: 2010-10-11
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公开(公告)号: US08407509B2公开(公告)日: 2013-03-26
- 发明人: Rajeev Sharma , Ajay Kumar , Naresh Dhamija , Atul Gupta , Ajay K. Gaite , Llamparidhi l
- 申请人: Rajeev Sharma , Ajay Kumar , Naresh Dhamija , Atul Gupta , Ajay K. Gaite , Llamparidhi l
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor, Inc.
- 当前专利权人: Freescale Semiconductor, Inc.
- 当前专利权人地址: US TX Austin
- 代理商 Charles Bergere
- 主分类号: G06F1/04
- IPC分类号: G06F1/04 ; G06F13/00 ; G06F13/42
摘要:
A method for compensating for variations in timing of data sent to a processor on data bit lines relative to a strobe clock sent to the processor on a strobe clock line that can be used in a dual data rate (DDR) memory identifies discrete minimum and maximum time offset values for test data in selected data bit patterns for the data bit lines. The discrete minimum time offset value is the minimum timing adjustment required to allow the processor to receive the data in a steady-state condition during a data valid window of the strobe clock and the discrete maximum time offset value is a maximum timing adjustment required to allow the processor to receive the data in a steady-state condition during a data valid window of the strobe clock. The discrete minimum and maximum time offset values identify a valid range when the data bit lines supply data in a steady-state condition for latching into the processor by the strobe clock.
公开/授权文献
- US20120089857A1 METHOD FOR COMPENSATING FOR VARIATIONS IN DATA TIMING 公开/授权日:2012-04-12
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