A product Line of Diodes Incorporated PI6CFGL201B 2-Output Low Power PCIE Gen 1-2-3 Clock Generator Features Description 25MHz crystal or reference clock input e PTh I6CFGL201B is a 2-output very low power 100MHz fre - quency generator for PCIe Gen 1, 2 and 3 applications with inte- 100MHz low power HCSL or LVDS compatible outputs grated output terminations providing Zo=100. The device has PCIe 3.0, 2.0 and 1.0 compliant 2 output enables for clock management and supports 2 different Selectable spread spectrum of -0.25%, -0.5% and no spread spread spectrum levels in addtion to spread off. The device also has one 1.8V LVCMOS REF1.8 output. Programmable output amplitude and slew rate Cycle-to-cycle jitter (typ.) ~ 30ps Applications Supply voltage of 3.3V+/-10% PCIe 3.0/2.0/1.0 clock generation Output supply voltage of 1.8V (1.05V to 3.6V supported) Pin Configuration (24-Pin TQFN) Industrial ambient operating temperature Available in lead-free package: 24-TQFN 24 23 22 21 20 19 18 CLK1 XTAL IN 1 XTAL OUT 2 17 CLK1 16 VDDXTAL 3 VDDA3.3 4 15 GNDA SADR/REF1.8 VDDREF1.8 5 14 CLK0 GNDDIG 6 13 CLK0 8 9 10 7 11 12 Block Diagram REF1.8 XTAL IN or Ref CLK OSC XTAL OUT OE(1:0) I + CLK0 + CLK0 SS Capable PLL t u + CLK1 SADR CLK1 SS EN tri CONTROL CKPWRGD PD LOGIC SDATA 3.3 SCLK 3.3 www.diodes.com June 2017 PI6CFGL201B Rev C 17-0082 1 Diodes Incorporated GNDXTAL VDDDIG3.3 SCLK 3.3 SS EN tri CKPWRGD PD SDATA 3.3 GND GND VDDO1.8 VDDO1.8 OE1 OE0 A product Line of Diodes Incorporated PI6CFGL201B SMBus Address Selection Table SADR Address + Read/Write Bit 0 1101000 1/0 State of SADR on first application of CKPWRGD PD 1 1101010 1/0 First rise edge CKPWRGD PD SADR/REF1.8 Input Output Typ. 6us Power Management Table CLKx CKPWRGD PD SMBus OE bit REF1.8 True O/P Comp. O/P 1 0 x Low Low Hi-Z 1 1 Running Running Running 1 0 Low Low Low Note: 1. REF1.8 is Hi-Z until the 1st assertion of CKPWRGD PD high. After this, when CKPWRG PD is low, REF1.8 is Low. CLKx CKPWRGD PD OE (Pin) OE (SMBus bit) True O/P Comp. O/P 0 X x Low Low 1 0 0 Low Low 1 0 1 Running Running 1 1 0 Low Low 1 1 1 Low Low Typical Crystal Requirement Parameter Test Conditions Min. Type Max. Units Mode of Oscillation Fundamental Frequency 25 MHz Equivalent Series Resistance (ESR) Shunt Capacitance pF Recommended Crystal Specification a) FL2500047, SMD 3.2X2.5(4P), 25MHz, CL=18pF, +/-20ppm,