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Altera_Forum's avatar
Altera_Forum
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13 years ago

question about high speed and multi-phase clk sample

there is asynchronous signal ,I want to make it synchronous with my system clk,but the jitter is restricted less than 2ns.So I need made high sample speed to this signal .my question is if I use a pll to generate four high speed clk with 0, 90,180,270 four phases,and then using those high speed clk to sample this asynchronous signal,how can i make sure this asynchronous signal has equa delay to those four clk or how can i sample this signal correctly?.Is there docment which can give me some way to solve this problem?

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  • Altera_Forum's avatar
    Altera_Forum
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    Is there a reason you just can use a dual-rank synchronizer? (I.E. two flops back to back)