REFOUT DATASHEET FREQUENCY GENERATOR FOR CPU, QPI, FBD, PCIE GEN1/2 & SATA ICS9FG108E Description Features/Benefits The ICS9FG108E is a Frequency Generator that provides 8 Generates common frequencies from 14.318MHz or differential HCSL output pairs. It can be used to drive PCe 25MHz Gen1/2, SATA and USB3.0 devices. The part can use Crystal or reference input either a 14.31818 Mhz or 25 MHz crystal. The 8 - 0.7V current-mode HCSL output pairs ICS9FG108E can also be driven by a reference input clock Supports Serial-ATA at 100MHz instead of a crystal. It provides outputs with cycle-to-cycle Two spread spectrum modes: -0.5% down spread and jitter of less than 50 ps and output-to-output skew of less +/-0.25% center spread Lower EMI than 65 ps. 31.5KHz spread modulation rate passes USB3 Recommended Application compliance testing Unused outputs may be disabled in either driven or Hi-Z Frequency Generator for CPU, PCIe Gen1/2, SATA and state for power manangement USB3.0 I-temp version available supports embedded Output Features applications 8 - HCSL differential outputs Key Specifications 1 - 3.3V REF output (either 14.318M or 25M depending Cycle to cycle jitter: < 50ps on XTAL) Phase jitter: PCIe Gen1/2 <3ps rms Output to output skew <65ps +/-300 ppm frequency accuracy on output clocks +/-50ppm on all output frequencies with Spread Off Block Diagram XIN/CLKIN OSC X2 OE(7:0) 8 PROGRAMMABLE STOP DIF(7:0) SPREAD PLL LOGIC SPREAD SEL14M 25M CONTROL DIF STOP LOGIC FS(2:0) SDATA SCLK IREF IDT FREQUENCY GENERATOR FOR CPU, QPI, FBD, PCIE GEN1/2 & SATA 1 ICS9FG108E REV C 102912ICS9FG108E FREQUENCY GENERATOR FOR CPU, QPI, FBD, PCIE GEN1/2 & SATA Pin Configuration XIN/CLKIN 1 48 VDDA X2 2 47 GNDA VDD 3 46 IREF GND 4 45 vFS0 REFOUT 5 44 vFS1 vFS2 6 43 vOE 0 vOE 7 7 42 DIF 0 DIF 7 8 41 DIF 0 DIF 7 9 40 VDD VDD 10 39 DIF 1 DIF 6 11 38 DIF 1 DIF 6 12 37 OE 1 OE 6 13 36 VDD VDD 14 35 GND GND 15 34 OE 2 OE 5 16 33 DIF 2 DIF 5 17 32 DIF 2 DIF 5 18 31 VDD VDD 19 30 DIF 3 DIF 4 20 29 DIF 3 DIF 4 21 28 vOE 3 vOE 4 22 27 SEL14M 25M SDATA 23 26 vSPREAD SCLK 24 25 DIF STOP indicates internal 120K pull up v indicates internal 120K pull down Power Groups Pin Number VDD GND Description 34 REFOUT, Digital Inputs, SMBus DIF Outputs 10,14,19,31,36,40 15,35 N/A 47 IREF 48 47 Analog VDD & GND for PLL Core Frequency Select Table SEL14M 25M FS2 FS1 FS0 OUTPUT(MHz) (FS3) 0 0 0 0 100.00 0 0 0 1 125.00 0 0 1 0 133.33 0 0 1 1 166.67 0 1 0 0 200.00 0 1 0 1 266.66 0 1 1 0 333.33 0 1 1 1 400.00 1 0 0 0 100.00 1 0 0 1 125.00 1 0 1 0 133.33 1 0 1 1 166.67 1 1 0 0 200.00 1 1 0 1 266.66 1 1 1 0 333.33 1 1 1 1 400.00 IDT FREQUENCY GENERATOR FOR CPU, QPI, FBD, PCIE GEN1/2 & SATA 2 ICS9FG108E REV C 102912 9FG108E