MR POOL
CCFF2372
see pic below

In electronics, a delay-locked loop (DLL) is a digital circuit similar to a phase-locked loop (PLL), with the main difference being the absence of an internal voltage-controlled oscillator, replaced by a delay line.

DLL is a loop of 1st order and type 1
PLL of 2nd order and type 2

DLLS are commonly used in high-speed communications

PLLs have many applications, from creating a "clean" replica of a noisy reference signal (with amplitude and phase variations removed), to creating new frequencies

photo credit- Danielle
https://t.me/DDay1978