Renesas Electronics Corporation Application Specific Clock/Timing 9FGL6251AP201NDGI

The 9FGL6251AP201NDGI is an intelligent buffer and clock generator designed specifically for single and dual-ported NVMe SSDs. It supports both Common (CC) and Independent Reference (IR) clocking architectures, making it suitable for U.2 and M.2 form factors. This device is also applicable in PCIe master/slave configurations and clock multiplexing applications, featuring an internal clock generator as an additional input channel. Key output features include two low-power HCSL outputs operating at 100MHz with selectable output impedance of 100,Ѷ or 85,Ѷ, a 1.8V LVCMOS reference output at either 33 1/3MHz or 25MHz, and an open-drain output indicating PCIe clock mode. The device automatically detects the presence or absence of input clocks and integrates terminations on the LP-HCSL outputs, which reduces the need for external components. The 9FGL6251AP201NDGI operates within a voltage range of 2.5V to 3.3V, with a reference clock output that eliminates the need for an external crystal oscillator. It is packaged in a 28-VQFP-N format measuring 4mm x 4mm. The device is compliant with PCIe Gen1,Äì4 standards for CC and Gen2,Äì3 for IR, with a cycle-to-cycle jitter specification of less than 50ps.