932SQL420BGLF

Application Specific Clock/Timing Overview

The Renesas Electronics Corporation 932SQL420BGLF is a low-power clock synthesizer designed for Intel-based server platforms. It generates CPU outputs of 100MHz driven by a 25MHz crystal input. The device features a low-drift non-spread SAS/SRC PLL suitable for systems requiring communication across PCIe domains. Key specifications include cycle-cycle jitter less than 50ps for CPU, SRC, NS_SRC, and NS_SAS outputs, with output-to-output skew under 50ps. Phase jitter performance includes PCIe Gen2 at less than 2.7ps rms and QPI at less than 0.3ps rms. The component supports spread spectrum capabilities on CPU, SRC, and PCI outputs to reduce EMI.

Application Specific Clock/Timing Feature Summary

• Low power design for Intel-based servers
• Cycle-cycle jitter <50ps for CPU, SRC, NS_SRC, and NS_SAS outputs
• Phase jitter: PCIe Gen2 <2.7ps rms, QPI <0.3ps rms
• 0.5% down spread capability on CPU, SRC, and PCI outputs

Application Specific Clock/Timing Applications

• Intel-based server platforms
• PCIe Gen2/3 clock generation
• QPI clock generation

Application Specific Clock/Timing Procurement Notes

Verify the exact ordering suffix against the manufacturer's current documentation to confirm package type (TSSOP or MLF) and temperature range. Confirm availability status as this component may be subject to discontinuation or lifecycle changes.

Application Specific Clock/Timing Selection Notes

Select based on required output frequencies (100MHz CPU, 33.33MHz PCI, etc.) and jitter requirements. Ensure compatibility with the 25MHz crystal input and 3.3V supply voltage. Consider the need for SMBus control for frequency margining and spread spectrum configuration.

Application Specific Clock/Timing Part Context

The 932SQL420 is a low-power version of the CK420BQ synthesizer. It is part of the IDT/Renesas portfolio for server clocking solutions.

Application Specific Clock/Timing Replacement Considerations

Consult the manufacturer's official replacement guide for verified substitutes. Generic cross-references should be validated against electrical specifications and pinout compatibility.

Application Specific Clock/Timing FAQ

What is the maximum phase jitter for PCIe Gen2?

The phase jitter for PCIe Gen2 is less than 2.7ps rms.

Can the CPU, SRC, and PCI outputs support spread spectrum?

Yes, the device supports 0.5% down spread on CPU, SRC, and PCI outputs, with additional amounts selectable via SMBus.

What is the input frequency for the crystal oscillator?

The device is driven by a 25.00MHz crystal input.