ICS9LPRS525AFLFT

Overview

The ICS9LPRS525AFLFT is a clock synthesizer compliant with the Intel CK505 specification, designed for Intel desktop chipsets. It features an integrated voltage regulator and series resistors on differential outputs. The device accepts a 14.318MHz crystal input and provides a 1:19 output ratio. Key electrical parameters include a maximum frequency of 400MHz and a supply voltage range of 3.135V to 3.465V. It supports CPU clocks up to 400MHz with cycle-cycle jitter less than 85ps for CPU outputs and less than 125ps for SRC outputs. The component operates within a temperature range of 0°C to 70°C and is housed in a 56-SSOP package.

Feature Summary

• Compliant with Intel CK505 Yellow Cover specification
• Fully integrated voltage regulator and series resistors on differential outputs
• Supports spread spectrum modulation from 0 to -0.5% down spread
• Provides +/- 100ppm frequency accuracy on all outputs

Applications

• Intel desktop chipset clock generation
• PCI Express (PCIe) clock support
• Serial ATA (SATA) clock generation

Procurement Notes

Verify the specific ordering suffix 'AFLFT' against official Renesas documentation to confirm package type and tape/reel specifications. Confirm RoHS compliance status as required by local regulations. Check for any Product Change Notices (PCN) related to assembly sites or marking changes that may affect part identification.

Selection Notes

Ensure the design utilizes an external 14.318MHz crystal with appropriate load capacitors for frequency tuning. Verify that the system power supply remains within the 3.135V to 3.465V range. Confirm that the 56-SSOP package dimensions fit the PCB layout constraints. Validate SMBus configuration requirements for frequency selection straps if hardware straps are not used.

Part Context

This component belongs to the IDT PC Main Clock family, specifically designed as a 56-pin CK505 derivative for Intel systems. It serves as a single-chip solution for generating multiple clock domains required by Intel desktop architectures, replacing discrete clock generator solutions.

Replacement Considerations

Direct replacements must maintain CK505 compatibility and pinout. Verify that alternative parts support the same 56-pin SSOP package and provide equivalent jitter performance for CPU and SRC outputs. Ensure the replacement supports the required 14.318MHz crystal input.