ICEPLL(1)

💖 icepll — bestie's guide to PLL math 💖

okay so you want your iCE40 to clock at a vibe, but the PLL divisors are giving ✨mystery✨? say less. this is icepll, and it does the math so you don't have to 🧮💅

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🌸 SYNOPSIS 🌸

 icepll [options]

(i know, one line, iconic, no notes 🎀)

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🦋 DESCRIPTION 🦋

so basically, you hand it an input frequency and the output frequency you're dreaming of, and it computes the PLL divisors and the VCO frequency for you. that's it. that's the whole thing. lowkey the most helpful little tool on your system 🫶

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💅 OPTIONS 💅

• -i <input_freq_mhz> — your PLL input frequency, in MHz. the default is 12 MHz, so if that's already your vibe, you can just not say anything 🌈
• -o <output_freq_mhz> — the PLL output frequency you're manifesting, in MHz. default is 60 MHz 🎀
• -S — turns OFF the SIMPLE feedback path mode. like, disables it. don't ask me to elaborate, that's just what it does, no cap 🚫✨

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👑 AUTHOR 👑

this manual page was written by Sebastian Kuzminsky <seb@highlab.com> for the Debian project (and may be used by others). we love a generous king 🫶👑

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and that's the whole page babes 💖 this was the ICEPLL(1) manual, dated 28 February 2026 — go clock something cute 💅✨🌸