发明授权
US6061418A Variable clock divider with selectable duty cycle 失效
可变时钟分频器,可选占空比

  • 专利标题: Variable clock divider with selectable duty cycle
  • 专利标题(中): 可变时钟分频器,可选占空比
  • 申请号: US103172
    申请日: 1998-06-22
  • 公开(公告)号: US6061418A
    公开(公告)日: 2000-05-09
  • 发明人: Joseph H. Hassoun
  • 申请人: Joseph H. Hassoun
  • 申请人地址: CA San Jose
  • 专利权人: Xilinx, Inc.
  • 当前专利权人: Xilinx, Inc.
  • 当前专利权人地址: CA San Jose
  • 主分类号: H03K21/10
  • IPC分类号: H03K21/10 H03K1/04
Variable clock divider with selectable duty cycle
摘要:
A variable clock divider circuit is provided. The variable clock divider circuit receives an input clock signal and generates an output clock signal having an output clock frequency that is less than the input clock frequency of the input clock signal. In one embodiment, a controller generates a rising-edge control signal and a falling-edge control signal. An output generator drives rising edges on the output clock signal in response to active edges on the rising-edge control signal. Conversely, the output generator drives falling edges on the output clock signal in response to active edges on the falling-edge control signal. The frequency of the rising-edge control signal and the frequency of the falling-edge control signal are variable. Common settings for the frequency of the rising-edge control signal and the falling-edge control signal include the frequency of the input clock signal divided by an integer.
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