发明名称 |
Start up circuit for delay locked loop |
摘要 |
An initialization circuit in a delay locked loop ensures that after power up or other reset clock edges are received by a phase detector in the appropriate order for proper operation. After reset of the delay locked loop, the initialization circuit assures that at least one edge of a reference clock is received prior to enabling the phase detector to increase (or decrease) the delay in a delay line. After at least one edge of a feedback clock is received, the initialization circuit enables the phase detector to decrease (or increase) the delay in a delay line.
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申请公布号 |
US7477716(B2) |
申请公布日期 |
2009.01.13 |
申请号 |
US20030647664 |
申请日期 |
2003.08.25 |
申请人 |
MOSAID TECHNOLOGIES, INC. |
发明人 |
MAI TONY |
分类号 |
H03D3/24;H03L7/081;H03L7/089;H03L7/10 |
主分类号 |
H03D3/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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