What this clock chip does on a server board
The Renesas 9FG104EGILFT is a PLL-based frequency timing generator built for Intel CPU server platforms, PCI Express lanes, and SATA interfaces. It takes a single-ended clock or crystal input and spreads it across five HCSL differential outputs, each running up to 400 MHz. One chip handles the reference clock distribution for the CPU socket, the PCIe root complex, and the storage controller — no extra fanout buffer needed.
400 MHz ceiling — what it buys you
The 400 MHz maximum output covers PCIe Gen1 through Gen3 base clocks and SATA interfaces.
Single-ended in, differential out — why that matters
The input accepts a single-ended clock or a crystal, while the five outputs are HCSL differential pairs.
Temperature range and supply tolerance
Rated from -40°C to 85°C, the supply range is 3.135 V to 3.465 V.