Invention Grant
- Patent Title: Techniques for reducing skew between clock signals
-
Application No.: US15222038Application Date: 2016-07-28
-
Publication No.: US09660653B1Publication Date: 2017-05-23
- Inventor: Chuan Thim Khor
- Applicant: Altera Corporation
- Applicant Address: US CA San Jose
- Assignee: Altera Corporation
- Current Assignee: Altera Corporation
- Current Assignee Address: US CA San Jose
- Agent Steven J. Cahill
- Main IPC: H03L7/06
- IPC: H03L7/06 ; H03L1/00 ; H03L7/095 ; H03L7/089 ; H03L7/091

Abstract:
A skew reduction circuit includes a first delay circuit that delays a first clock signal to generate a second clock signal and a second delay circuit that delays a third clock signal to generate a fourth clock signal. The skew reduction circuit also includes a time-to-digital converter circuit that measures a skew between the second and fourth clock signals to generate a measurement of the skew between the second and fourth clock signals. The skew reduction circuit adjusts a delay of one of the first or second delay circuits to reduce the skew between the second and fourth clock signals based on the measurement of the skew.
Information query