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
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Application No.: US11531263Application Date: 2006-09-12
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Publication No.: US08188781B1Publication 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

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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