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Clock Generator For Cavium Processors

The 8413S09 is a PLL-based clock generator specifically designed for the Cavium Networks OCTEON Plus 58xx family of processors and Advanced Mezzanine Card (AMC) applications. This high performance device is optimized to generate the processor core reference clock, the PCI-Express, sRIO, XAUI, and SGMII SerDes reference clocks and the clock for Gigabit Ethernet MACs or PHYs. The clock generator offers ultra low-jitter, low-skew clock outputs, and edge rates that easily meet the input requirements for processor core reference, PCI-Express, sRIO, XAUI, and SGMII SerDes interfaces. The output frequencies are generated from a 25MHz external input source or an external 25MHz parallel resonant crystal.The industrial temperature range of the 8413S09 supports a variety of communications, networking, processor, DSP, data acquisition, storage and I/O application requirements.


  • Six selectable 100MHz, 125MHz, 156.25MHz and 312.5MHz clocks for PCI Express, sRIO, XAUI, SGMII and HCSL interface levels
  • Two fix frequency 100MHz clocks (QDx, nQDx) for PCI Express and HCSL interface levels
  • One LVCMOS/LVTTL QREF output, 15Ω output impedance
  • Selectable external crystal or differential (single-ended) input source
  • Crystal oscillator interface designed for 25MHz, parallel resonant crystal
  • Differential CLK, nCLK input pair that can accept: LVPECL, LVDSLVHSTL, HCSL input levels
  • Internal resistor bias on nCLK pin allows the user to drive CLK input with external single-ended (LVCMOS/ LVTTL) input levels
  • Supply Modes:
    Full 3.3V (HSCL and QREF0)
    Mix 3.3V core /2.5V (QREF0)
  • -40°C to 85°C ambient operating temperature
  • Lead-free (RoHS 6) packaging​

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)
5HCSL25.000000, 100.000000, 125.000000, 156.250000, 312.50000025.0000002LVHSTL, HCSL, LVDS, LVPECL, Crystal53.32.5, 3.3

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
8413S09BKILFActiveNLG48P1VFQFPN48IYesTrayCheck Availability
8413S09BKILFTActiveNLG48P1VFQFPN48IYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
8413S09 Datasheet Datasheet PDF 765 KB Feb 3, 2015
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
show all (21)
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB May 8, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB May 6, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB May 6, 2014
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 5, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 2014
AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014