发明名称 |
Wide frequency range signal generator and method, and integrated circuit test system using same |
摘要 |
A signal generator produces an output clock signal by coupling an input clock signal through a plurality of divider circuits each of which is formed by a toggling flip-flop. The frequency of the output clock signal is adjusted by selecting the flip-flop to which the input clock signal is coupled. Retimer flip-flops may be coupled between adjacent flip-flips to resynchronize the signal being coupled through the flip-flops. Each of the retimer flip-flops receives a respective signal from the output of an upstream flip-flop at its data input, and it receives the input clock signal at its clock input. The flip-flop then applies the signal to a downstream flip-flop in synchronism with the input clock signal. The final two flip-flops through which the input signal is coupled may be preset to various states to set the phase of the output clock signal to one of four phases.
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申请公布号 |
US7536618(B2) |
申请公布日期 |
2009.05.19 |
申请号 |
US20060442515 |
申请日期 |
2006.05.25 |
申请人 |
MICRON TECHNOLOGY, INC. |
发明人 |
RAUSCH GREG;RABE ROB;KLIER JAKE |
分类号 |
G01R31/28 |
主分类号 |
G01R31/28 |
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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