Invention Grant
US08363485B2 Delay line that tracks setup time of a latching element over PVT
有权
通过PVT跟踪锁存元件的建立时间的延迟线
- Patent Title: Delay line that tracks setup time of a latching element over PVT
- Patent Title (中): 通过PVT跟踪锁存元件的建立时间的延迟线
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Application No.: US12559585Application Date: 2009-09-15
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Publication No.: US08363485B2Publication Date: 2013-01-29
- Inventor: Ashwin Raghunathan , Marzio Pedrali Noy
- Applicant: Ashwin Raghunathan , Marzio Pedrali Noy
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Eric Ho
- Main IPC: G11C7/10
- IPC: G11C7/10 ; G11C7/22

Abstract:
A latching element latches incoming data into an integrated circuit. The latching element (for example, a latch or flip-flop) can be considered to include a data path portion, a clock path portion, and an ideal latching element. In one embodiment, an open-loop replica of the data path portion is disposed in a clock signal path between a clock input terminal of the integrated circuit and a clock input lead of the latching element. In a second embodiment, an additional replica of the clock path portion is disposed in a data signal path between a data terminal of the integrated circuit and a data input lead of the latching element. The replica circuits help prevent changes in skew between a data path propagation time to the ideal latching element and clock path propagation time to the ideal latching element. Setup times remain substantially constant over PVT (process, supply voltage, temperature).
Public/Granted literature
- US20110063929A1 DELAY LINE THAT TRACKS SETUP TIME OF A LATCHING ELEMENT OVER PVT Public/Granted day:2011-03-17
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