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8V41N012I

Clock Generator For Cavium Processors

The IDT8V41N012I is a PLL-based clock generator specifically designed for Cavium Networks Octeon II processors. This high performance device is optimized to generate the processor core reference clock, the PCI-Express, sRIO, XAUI, SerDes reference clocks and the clocks for both the Gigabit Ethernet MAC and PHY. The output frequencies are generated from a 25MHz external input source or an external 25MHz parallel resonant crystal. The industrial temperature range of the IDT8V41N012I supports telecommunication, networking, and storage requirements.

Features

  • Ten selectable 100MHz, 125MHz, 156.25MHz and 312.5MHz clocks for PCI Express, sRIO and GbE, HCSL interface levels
  • One single-ended QG LVCMOS/LVTTL clock output at 125MHz
  • One single-ended QF LVCMOS/LVTTL clock output at 50MHz
  • Two single-ended QREFx LVCMOS/LVTTL outputs at 25MHz
  • Selectable external crystal such as the IDT 603-25-173 (25 MHz) 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, (125MHz QG output and 25MHz QREFx outputs): 
    • Core / Output
    • 3.3V / 3.3V
    • 3.3V / 2.5V 
  • Supply Modes, (HCSL outputs, and 50MHz QF output):
    • Core / Output
    • 3.3V / 3.3V
  • -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)
14HCSL, LVCMOS25.000000, 50.000000, 100.000000, 125.000000, 156.250000, 312.50000025.0000002LVDS, LVCMOS, LVPECL, LVHSTL, HCSL, Crystal63.32.5, 3.3

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
8V41N012NLGIActiveNLG72P1VFQFPN72IYesTrayCheck Availability
8V41N012NLGI8ActiveNLG72P1VFQFPN72IYesReelCheck Availability

Documents

Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
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8V41N012 Datasheet Datasheet PDF 972 KB Jul 27, 2015
User Guides & Manuals
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Timing Solutions for Cavium Processor Designs Guide PDF 810 KB Mar 9, 2016
Apps Notes & White Papers
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AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
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AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
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AN-845 Termination - LVCMOS Application Note PDF 62 KB May 13, 2014
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AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
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AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
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AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB May 8, 2014
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AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
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AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
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AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
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AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
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AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
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AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB May 6, 2014
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AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
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AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB May 6, 2014
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AN-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
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AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 5, 2014
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AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
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AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
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AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
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AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
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AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 2014
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AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
PCNs & PDNs
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PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 28, 2016
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PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 13, 2015
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PCN# : A1311-03R1 Alternate Assembly Locations Product Change Notice PDF 43 KB Feb 16, 2014
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PCN# : A1311-03 Alternate Assembly Locations Product Change Notice PDF 140 KB Dec 3, 2013

Software & Tools

Title Type Format File Size Datesort icon
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8V41N012I IBIS Model Model - IBIS ZIP 104 KB Nov 24, 2014