Diodes Incorporated
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PCIe 3.0 Clock Generator with 2 HCSL Outputs

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The PI6CFGL202B is a spread spectrum clock generator compli-ant to PCI Express 3.0 and Ethernet requirements. The device is used for PC or embedded systems to substantially reduce Electro-magnetic Interference (EMI).

The PI6CFGL202B provides two differential (HCSL) or LVDS spread spectrum outputs. The PI6CFGL202B is configured to se-lect spread and clock selection. Using Pericom's patented Phase-Locked Loop (PLL) techniques, the device takes a 25MHz crystal input and produces two pairs of differential outputs (HCSL) at 25MHz, 100MHz, 125MHz and 200MHz clock frequencies. It also provides spread selection of -0.5%, -0.75%, and no spread.


  • PCIe 3.0, 2.0 and 1.0 compliant
  • LVDS compatible outputs
  • Supply voltage of 3.3V ±10%
  • 25MHz crystal or clock input frequency
  • Low power consumption with independent output power supply 1.05V to 3.3V
  • Jitter 35ps cycle-to-cycle (typ)
  • Spread of -0.5%, -0.75%, and no spread
  • Industrial temperature range
  • Spread Bypass option available
  • Spread and frequency selection via external pins
  • Packaging: (Pb-free and Green) 16-pin TSSOP (L16)


  • PCIe Clock Generators

Product Specifications

Product Parameters

Function Generator
Compliance(Only Automotive supports PPAP) Standard
Input Type(s) Crystal, CMOS
Additive Jitter (ps) <1
Number of Outputs 2
Maximum Output Frequency (MHz) 100
Output Type(s) HCSL
Skew (PS) 50
Supply Voltage (V) 3.3
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

Application Information

Application Notes

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Evaluation board, and Other technical documents

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