Invention Grant
- Patent Title: Synchronizer with high reliability
- Patent Title (中): 同步器具有高可靠性
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Application No.: US13235297Application Date: 2011-09-16
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Publication No.: US08493108B2Publication Date: 2013-07-23
- Inventor: Lincoln R. Nunes
- Applicant: Lincoln R. Nunes
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Rory D. Rankin
- Main IPC: H03L7/00
- IPC: H03L7/00

Abstract:
A system and method for synchronizing asynchronous input signals with reliability. Each of a first and a second storage element in a synchronizer receives a first clock signal in a first clock domain. The second storage element may also receive a first reset signal generated by a second clock signal in the first clock domain different from the first clock signal. The first storage element receives a combination of an asynchronous data input signal and the first reset signal. The data input signal may be generated from circuitry utilizing a second clock domain different from the first clock domain. The second storage element additionally receives an output of a second combination of a stored output value of the first storage element and a second reset signal generated from the first clock signal. The second storage element stores a stable output value based at least on the asynchronous data input signal.
Public/Granted literature
- US20130069697A1 SYNCHRONIZER WITH HIGH RELIABILITY Public/Granted day:2013-03-21
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