发明授权
US07889826B2 Process, voltage, temperature independent switched delay compensation scheme
有权
过程,电压,温度独立的开关延迟补偿方案
- 专利标题: Process, voltage, temperature independent switched delay compensation scheme
- 专利标题(中): 过程,电压,温度独立的开关延迟补偿方案
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申请号: US12026813申请日: 2008-02-06
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公开(公告)号: US07889826B2公开(公告)日: 2011-02-15
- 发明人: Gurpreet Bhullar , Graham Allan
- 申请人: Gurpreet Bhullar , Graham Allan
- 申请人地址: CA Ottawa, Ontario
- 专利权人: Mosaid Technologies Incorporated
- 当前专利权人: Mosaid Technologies Incorporated
- 当前专利权人地址: CA Ottawa, Ontario
- 代理机构: Borden Ladner Gervais LLP
- 代理商 Shin Hung
- 主分类号: H03D3/24
- IPC分类号: H03D3/24
摘要:
A delay compensation circuit for a delay locked loop which includes a main delay line having a fine delay line comprising fine delay elements and a coarse delay line comprising coarse delay elements, the main delay line being controlled by a controller, the delay compensation circuit comprising: an adjustable fine delay for modeling a coarse delay element, a counter for controlling the adjustable fine delay to a value which is substantially the same as that of a coarse delay element, a circuit for applying a representation of the system clock to the delay compensation circuit, and a circuit for applying the fine delay count from the counter to the controller for adjusting the fine delay line of the main delay line to a value which is substantially the same as that of a coarse delay element of the main delay line.
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