PCIe clock generator with 1:9 fanout
The Renesas 9FGV0841AKILF is a PLL-based clock generator designed specifically for PCI Express (PCIe) reference clock trees. It takes a single crystal input and produces nine differential HCSL or single-ended LVCMOS outputs at up to 100 MHz, covering the reference clock needs of PCIe Gen1, Gen2, and Gen3 root complexes, switches, and endpoints. The 1:9 ratio means one crystal drives nine clock loads — enough for a multi-slot backplane, a switch fabric, or a cluster of PCIe peripherals on a single board. The differential outputs are HCSL, the standard PCIe signalling level, while the LVCMOS option suits legacy or sideband logic.
100 MHz ceiling and what it means for PCIe generation
Maximum output frequency is 100 MHz, the standard PCIe reference clock rate.
Housed in a 48-VFQFPN with exposed pad, surface-mount only.