ICS9248AG-92LF

Overview

The ICS9248AG-92LF is a mobile Pentium II system clock generator by Renesas Electronics Corporation, designed for Intel CPU servers. It features an integrated PLL and accepts a 14.318 MHz crystal input to generate up to 100 MHz output frequencies. The device provides a 1:22 input-to-output ratio with non-differential outputs. It operates on a 3.135V to 3.465V supply voltage within a 0°C to 70°C temperature range. Packaged in a 48-TSSOP surface-mount case, it supports serial configuration via an I²C interface.

Feature Summary

• Generates system clocks for CPU, SDRAM, PCI, USB, Super I/O, and reference outputs
• I²C serial configuration interface for output clock disabling and functional selection
• Supports power management via PWR_DWN#, CPU_STOP#, and PCI_STOP# pins
• Two fixed outputs selectable as 24 MHz or 48 MHz

Applications

• Mobile Pentium II system clock generation
• Intel Mobile 440BX/MX chipset timing solutions
• Intel CPU server platforms

Procurement Notes

Verify the component status before procurement as this part number may be discontinued. Confirm that the 48-TSSOP package dimensions match the design requirements. Ensure the I²C interface protocol compatibility with the host controller is validated against the specific application needs.

Selection Notes

Select this component for applications requiring a dedicated clock synthesizer for mobile Pentium II architectures. Verify that the 100 MHz maximum frequency and 1:22 ratio meet the system timing requirements. Ensure the 3.3V core supply and 2.5V logic levels are compatible with the target platform's power distribution network.

Part Context

This device belongs to the Application Specific Clock/Timing category. It is manufactured by Renesas Electronics Corporation (formerly Integrated Circuit Systems). The part is specifically tailored for mobile computing environments, providing comprehensive clocking for processors and memory subsystems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official manufacturer resources for current alternatives if this part is discontinued.

FAQ

What is the input frequency requirement for the ICS9248AG-92LF?

The device requires an external 14.318 MHz crystal or clock signal connected to the X1 and X2 pins.

How does the ICS9248AG-92LF handle power management?

It supports low-power modes through the PWR_DWN# pin to stop the oscillator and PLL, and uses CPU_STOP# and PCI_STOP# pins to selectively disable CPU and PCI clocks.

Can the output clocks be controlled individually?

Yes, the I²C serial configuration interface allows for individual output clock disabling and other functional configurations via register writes.