9FGL6251AP301NDGI

Application Specific Clock/Timing Overview

The 9FGL6251AP301NDGI is a clock generator and buffer from the 9FGL6251 series, manufactured by Renesas Electronics. It is designed for intelligent PCIe clock applications, specifically supporting nVME SSDs in U.2 and M.2 form factors. The device features two differential LP-HCSL outputs with integrated 85Ω terminations, reducing external component count. It supports Common Clock (CC) and Separate Reference Independent Spread (SRIS) architectures, defaulting to -0.5% Spread Spectrum Clocking (SSC) for SRIS configurations. The unit operates on a 3.3V supply and utilizes a 4mm x 4mm 28-VQFP-N package.

Application Specific Clock/Timing Feature Summary

• Intelligent detection of input clock presence with automatic mode switching
• Two 100MHz Low-power HCSL (LP-HCSL) outputs with integrated 85Ω termination resistors
• Supports CC and SRIS clocking architectures with SMBus-selectable -0.25% SSC
• Integrated crystal option available for Q suffix variants; REF clock output saves external XO

Application Specific Clock/Timing Applications

• Single and dual-ported nVME SSDs
• PCIe master/slave clocking systems
• Clock multiplexing applications
• U.2 and M.2 storage form factors

Application Specific Clock/Timing Procurement Notes

Verify the specific suffix 'NDGI' against official Renesas documentation to confirm packaging details and RoHS compliance status. Factory packaging quantity is typically 2500 units per reel. Confirm moisture sensitivity level and lead time requirements directly with the manufacturer or authorized distributors prior to ordering.

Application Specific Clock/Timing Selection Notes

Select this component for designs requiring 85Ω output impedance LP-HCSL signaling. Ensure the design architecture aligns with SRIS or CC modes, as the 301 configuration defaults to -0.5% SSC. Verify that the 28-VQFP-N package fits the PCB footprint constraints. For 100Ω systems, consider the 9FGL6241 variant instead.

Application Specific Clock/Timing Part Context

This part belongs to the 9FGL6251 family, which serves as the root platform for 31/41/51 configurations. The 'A' prefix indicates specific electrical characteristics or revisions within the series. The 'P301' designation identifies the specific pinout and functional configuration for SRIS/CC support with -0.5% SSC default.

Application Specific Clock/Timing Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Renesas engineering for direct replacements if this component becomes obsolete.