Invention Grant
US08130017B2 Semiconductor device having a delay locked loop responsive to skew information and method for driving the same
有权
具有响应于偏斜信息的延迟锁定环路的半导体器件及其驱动方法
- Patent Title: Semiconductor device having a delay locked loop responsive to skew information and method for driving the same
- Patent Title (中): 具有响应于偏斜信息的延迟锁定环路的半导体器件及其驱动方法
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Application No.: US13149192Application Date: 2011-05-31
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Publication No.: US08130017B2Publication Date: 2012-03-06
- Inventor: Ki-Won Lee
- Applicant: Ki-Won Lee
- Applicant Address: KR Gyeonggi-do
- Assignee: Hynix Semiconductor Inc.
- Current Assignee: Hynix Semiconductor Inc.
- Current Assignee Address: KR Gyeonggi-do
- Agency: IP & T Group LLP
- Priority: KR2007-0047500 20070516; KR2007-0064134 20070628
- Main IPC: H03L7/06
- IPC: H03L7/06

Abstract:
A delay locked loop includes: a control voltage generator configured to generate a voltage control signal having a voltage level corresponding to a phase difference between an external clock and a feedback clock; a voltage controlled delay line configured to generate a plurality of output signals by reflecting a different delay time on the external clock in response to the voltage control signal; an internal clock multiplexer configured to output one of the plurality of output signals as an internal clock in response to a skew information signal; a delay replica model configured to output the feedback clock by reflecting a delay of an actual clock/data path on the internal clock; and a skew information signal generator configured to generate the skew information signal.
Public/Granted literature
- US20110227620A1 SEMICONDUCTOR DEVICE HAVING DELAY LOCKED LOOP AND METHOD FOR DRIVING THE SAME Public/Granted day:2011-09-22
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