Romley-platform clock synthesizer with 1:19 HCSL fanout
The 932SQ420DKLF is a PLL-based clock synthesizer from Renesas, designed specifically for Intel Romley server/workstation platforms. It takes a crystal input and delivers 19 HCSL outputs, all differential, with a maximum output frequency of 146.7 MHz. The 1:19 fanout ratio means a single crystal oscillator feeds nineteen HCSL clock lanes — enough to distribute reference clocks across a multi-socket Romley board without external fanout buffers. The differential HCSL outputs (No/Yes input:output) are the standard for PCIe and DDR3 reference clocks on that platform.
Supply, package, and temperature grade
Operates from a 3.135 V to 3.465 V supply rail, matching the 3.3 V PCIe clock plane. The single-circuit PLL draws from that rail and distributes to all 19 outputs.