发明名称 |
Systems and methods for clock alignment using pipeline stages |
摘要 |
Systems and methods for phase detection are disclosed. A collapsible three-stage pipeline includes a first register in a first stage having a first clock signal having first clock edges, a second register in a second stage that receives a first signal from the first stage, and having a second clock signal having second clock edges, and a third register in a third stage that receives a second signal from the second stage, and having a third clock signal having third clock edges, wherein each second clock edge has a corresponding first clock edge and a corresponding third clock edge. The circuitry may further include a two-stage pipeline including fourth and fifth stages, a counter that provides an input signal into the collapsible three-stage pipeline and the two-stage pipeline, and a comparator that compares a first output of the collapsible three-stage pipeline and a second output of the two-stage pipeline. |
申请公布号 |
US9501092(B1) |
申请公布日期 |
2016.11.22 |
申请号 |
US201514974506 |
申请日期 |
2015.12.18 |
申请人 |
Altera Corporation |
发明人 |
How Dana;Ebeling Carl;Kertesz Audrey Catherine |
分类号 |
H03L7/06;G06F1/12 |
主分类号 |
H03L7/06 |
代理机构 |
Fletcher Yoder, P.C. |
代理人 |
Fletcher Yoder, P.C. |
主权项 |
1. A phase detector, comprising:
a first register in a first stage having a first clock signal having first clock edges; a second register in a second stage that receives a first signal from the first stage, and having a second clock signal having second clock edges; and a third register in a third stage that receives a second signal from the second stage, and having a third clock signal having third clock edges, wherein each second clock edge has a corresponding first clock edge and a corresponding third clock edge. |
地址 |
San Jose CA US |