发明授权
US06327318B1 Process, voltage, temperature independent switched delay compensation scheme 失效
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
  • 申请号: US09106755
    申请日: 1998-06-30
  • 公开(公告)号: US06327318B1
    公开(公告)日: 2001-12-04
  • 发明人: Gurpreet BhullarGraham Allan
  • 申请人: Gurpreet BhullarGraham Allan
  • 主分类号: H03D324
  • IPC分类号: H03D324
Process, voltage, temperature independent switched delay compensation scheme
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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