A product Line of bP Diodes Incorporated Lead-free GreenPI6CG334023.3V Very-Low Power 4-Output PCIe Clock Generator With On-chip TerminationFeaturesDescription ÎÎ3.3V Supply Voltage The PI6CG33402 is a four-output very-low power PCIe Gen1/Gen2/ ÎÎCrystal/CMOS Input: 25MHz Gen3/ Gen4/ Gen5 clock generator. It uses 25MHz crystal or CMOS ÎÎTwo Differential Low-Power HCSL Outputs with On-chip reference as an input to generate the 100MHz low-power differ- Termination ential HCSL outputs with on-chip terminations. The on-chip ter- ÎÎDefault ZOUT = 85Ω mination can save 16 external resistors and make layout easier. An additional buffered reference output is provided to serve as a ÎÎIndividual Output Enable low-noise reference for other circuitry. ÎÎReference CMOS Output ÎÎProgrammable Slew Rate and Output Amplitude for each It uses Diodes' proprietary PLL design to achieve very-low Output jitter that meets PCIe Gen1/Gen2/Gen3/Gen4/Gen5 require- ÎÎDifferential Outputs Blocked until PLL is Locked ments. It also provides various options such as different slew rate and amplitude through SMBUS, so users can configure the de- ÎÎSelectable 0%, -0.25%, or -0.5% Spread on Differential Outputs vice easily to get the optimized performance for their individual boards. The device also supports selectable spread-spectrum ÎÎStrapping pins or SMBus for Configuration options to reduce EMI for various applications. ÎÎ3.3V Tolerant SMBus Interface Support ÎÎVery-Low Jitter Outputs à Differential Cycle-to-Cycle Jitter <50ps à Differential Output-to-Output Skew <50ps à PCIe Gen1/Gen2/Gen3/Gen4/Gen5 Compliant à CMOS REFOUT Phase Jitter is < 0.3ps RMS ÎÎTotally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) ÎÎHalogen and Antimony Free. “Green” Device (Note 3) ÎÎPackaging (Pb-free & Green): 32-lead 5mm × 5mm TQFN Block Diagram REFOUT OE[3:0]# Q3 XTAL_IN/CLK OSC PLL XTAL_OUT SS Q2 SCLK Q1 SDATA SADR CTRL SS_SEL_TRI LOGIC Q0 PD# Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. PI6CG33402 www.diodes.com May 2019 Document Number DS41073 Rev 3-2 1 Diodes Incorporated
