954204CGLNT

Application Specific Clock/Timing Overview

The 954204CGLNT is a Programmable Timing Control Hub designed for mobile P4 systems, functioning as a CK410M-compliant clock synthesizer. It provides a single-chip solution for Intel P4-M processors and mobile chipsets. The device generates CPU outputs up to 400MHz using an external 14.318MHz crystal. Key electrical specifications include cycle-cycle jitter of less than 85ps for CPU outputs, less than 125ps for SRC outputs, and less than 500ps for PCI outputs. Frequency accuracy is specified at +/- 300ppm for CPU and SRC clocks, and +/- 100ppm for USB clocks.

Application Specific Clock/Timing Feature Summary

• Generates multiple differential current-mode pairs: two 0.7V CPU pairs, five 0.7V SRC pairs (for SATA/PCI-E), one selectable CPU/SRC pair, four 33MHz PCI outputs, two free-running PCICLK_F outputs, one 48MHz USB output, one 96MHz DOT output, and one 14.318MHz REF output.
• Supports programmable spread spectrum percentage and frequency with tight ppm accuracy required for Serial ATA and PCI-Express.
• Includes CLKREQ pins to support SRC power management and supports undriven differential CPU/SRC pairs in PD# mode.

Application Specific Clock/Timing Applications

• Mobile systems built with Intel P4-M processors
• Intel mobile chipset platforms
• Applications requiring tight ppm accuracy for Serial ATA and PCI-Express

Application Specific Clock/Timing Part Context

The 954204CGLNT is part of the 954204 series, which is obsolete. Variants include the 954204BGLFT, 954204CGLF, and 954204CGLN. The 'T' suffix typically indicates tape and reel packaging, while 'N' may denote specific package or environmental compliance variations within the obsolete family.

Application Specific Clock/Timing Replacement Considerations

The 954204CGLNT is marked as obsolete. No public confirmed substitute part numbers are available in the provided data. Designers should consult Renesas for current alternatives compatible with Intel P4-M mobile system requirements.