Invention Grant
US08188781B1 Memory interface phase-shift circuitry to support multiple frequency ranges 有权
存储器接口相移电路,以支持多个频率范围

  • Patent Title: Memory interface phase-shift circuitry to support multiple frequency ranges
  • Patent Title (中): 存储器接口相移电路,以支持多个频率范围
  • Application No.: US11531263
    Application Date: 2006-09-12
  • Publication No.: US08188781B1
    Publication Date: 2012-05-29
  • Inventor: Andy L. Lee
  • Applicant: Andy L. Lee
  • Applicant Address: US CA San Jose
  • Assignee: Altera Corporation
  • Current Assignee: Altera Corporation
  • Current Assignee Address: US CA San Jose
  • Agency: Ropes & Gray LLP
  • Main IPC: H03H11/26
  • IPC: H03H11/26
Memory interface phase-shift circuitry to support multiple frequency ranges
Abstract:
The present invention provides a phase shift circuit that supports multiple frequency ranges. The phase shift circuit receives a plurality of control bits and causes a phase shift in a received signal, the phase shift corresponding to a number of time steps, the number depending on the control bits, and the time step is selected from a plurality of different time steps based on a frequency range associated with the received signal.
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