Invention Grant
- Patent Title: Semiconductor device including a delay locked loop circuit
- Patent Title (中): 半导体器件包括延迟锁定环电路
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Application No.: US14152488Application Date: 2014-01-10
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Publication No.: US08917130B2Publication Date: 2014-12-23
- Inventor: Ryo Fujimaki
- Applicant: Ryo Fujimaki
- Applicant Address: LU Luxembourg
- Assignee: PS4 Luxco S.A.R.L.
- Current Assignee: PS4 Luxco S.A.R.L.
- Current Assignee Address: LU Luxembourg
- Agency: McGinn IP Law Group, PLLC
- Priority: JP2011-094264 20110420
- Main IPC: H03L7/00
- IPC: H03L7/00 ; H03L7/10 ; H03L7/081

Abstract:
A method for initializing a delay locked loop having a delay circuit includes a plurality of serially connected delay elements and a counter circuit for selecting an output of one of the delay elements as an output clock signal. The method includes resetting an initial delay control circuit, generating, with the initial delay control circuit, a pulse based on a period of an input clock signal, determining, with the initial delay control circuit, a number of delay elements required to produce a delay time at least substantially equivalent to a pulse width for a preset signal, initializing the counter circuit based on the preset signal and adjusting the counter circuit in response to phases of the input and output clock signals.
Public/Granted literature
- US20140125387A1 SEMICONDUCTOR DEVICE INCLUDING A DELAY LOCKED LOOP CIRCUIT Public/Granted day:2014-05-08
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