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Mar 19, 2017 · Fundamentals

How the S3C2410/2440 PLL Generates CPU and USB Clocks

This article explains the role of Phase‑Locked Loops in Samsung S3C2410/2440 chips, detailing how MPLL and UPLL produce the FCLK, HCLK, PCLK, and USB clocks, the register settings and formulas used, and the associated power‑management modes.