Delay-Locked Loop

What Does Delay-Locked Loop Mean?

A delay-locked loop (DLL) is a digital circuit that provides high-bandwidth data transmission rates between devices. DLL transmissions have no propagation delay, low clock skew between output clock signals and advanced clock domain control. DLL is similar to a phase-locked loop except that it does not include an internal voltage-controlled oscillator.

Techopedia Explains Delay-Locked Loop

A delay locked loop is a circuit that’s fed by a reference clock. A DLL tries to determine the period of that reference clock by adjusting a feedback look via the delay in a variable delay buffer. When the delayed clock signal matches the incoming clock signal, the loop is considered locked.

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Margaret Rouse

Technology Specialist

Margaret is an award-winning writer and educator known for her ability to explain complex technical topics to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles in the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret’s idea of a fun day is to help IT and business professionals to learn to speak each other’s highly specialized languages.

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