ICS954309BKLF

Overview

The ICS954309BKLF is a Timing Control Hub™ clock synthesizer designed for Intel P4 processor platforms. It operates within a 3.135V to 3.465V supply range and supports frequencies up to 400MHz. The device accepts crystal inputs and provides multiple differential and single-ended outputs, including pairs for CPU, PCIe, SATA, and other system interfaces. Packaged in a 64-VFQFPN (9x9mm) with an exposed pad, it integrates PLL functionality to generate precise timing signals for next-generation Intel chipsets and processors.

Feature Summary

• Timing Control Hub™ architecture compliant with Intel CK410M specifications
• Multiple 0.7V current-mode differential output pairs for CPU, PCIe, and SATA interfaces
• Integrated PLL for clock synthesis from a single 14.318MHz crystal input
• Supports selectable pairs for flexible configuration of CPU_ITP/PCIe and LCDCLK/PCIe signals

Applications

• Intel P4 processor platform clock generation
• Intel chipset timing synchronization
• PCI Express interface clock distribution
• SATA controller clocking

Procurement Notes

Verify the manufacturer designation as Renesas Electronics Corporation, noting that this component originates from IDT, which was acquired by Renesas. Confirm the package type is 64-VFQFPN (9x9mm) with an exposed pad. Ensure the operating temperature range matches the specified 0°C to 70°C for commercial applications. Check for RoHS compliance status if required for specific manufacturing standards.

Selection Notes

Select this component when designing for Intel P4 architectures requiring a single-chip clock solution. It is suitable for systems needing multiple differential outputs at 0.7V swing for high-speed interfaces like PCIe and CPU data paths. Consider the 64-VFQFPN package constraints for PCB layout. Verify that the 14.318MHz crystal input frequency aligns with the system reference design requirements.

Part Context

This device belongs to the TCH™ series of programmable timing control hubs. It serves as a specialized clock generator for legacy Intel P4 platforms, replacing discrete clock generators with a unified solution. The part number suffix BKLF indicates specific packaging and tape/reel options typical for surface-mount assembly in high-volume manufacturing environments.

Replacement Considerations

Direct replacements are limited due to the specific Intel P4 compatibility. Review similar IDT/Renesas clock synthesizers in the 954xx series for pin-compatible alternatives if available. Ensure any substitute maintains the 0.7V differential output swing and supports the required PCIe and CPU interface frequencies.