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ICS9FG104E Datasheet(PDF) 1 Page - Renesas Technology Corp |
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ICS9FG104E Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 19 page  DATASHEET FREQUENCY GENERATOR FOR PCIE GEN1/2, USB3.0, QPI & SATA ICS9FG104E IDT® FREQUENCY GENERATOR FOR PCIE GEN1/2, USB3.0, QPI & SATA 1 ICS9FG104E REV D 102912 Description The ICS9FG104E is a frequency generator that provides 4 differential HCSL output pairs. It can be used to drive PCIe Gen1/2, SATA and USB3.0 devices. The part can use either a 14.31818 MHz or 25 MHz crystal. The 9FG104E can also be driven by a reference input clock instead of a crystal. It provides outputs with cycle-to-cycle jitter of less than 50 ps and output-to-output skew of less than 35 ps. Recommended Application Frequency Generator for CPU, PCIe Gen1/2, SATA and USB3.0 Output Features • 4 - HCSL differential outputs • 1 - 3.3V REF output (either 14.318M or 25M depending on XTAL) Features/Benefits • Generates common frequencies from 14.318MHz or 25MHz • Crystal or reference input • 4 - 0.7V current-mode HCSL output pairs • Supports Serial-ATA at 100MHz • Two spread spectrum modes: -0.5% down spread and +/-0.25% center spread; Lower EMI • 31.5KHz spread modulation rate; passes USB3 compliance testing • Unused outputs may be disabled in either driven or Hi-Z state for power manangement • I-temp version available; supports embedded applications Key Specifications • Cycle to cycle jitter: < 50ps • Phase jitter: PCIe Gen1/2 <3ps rms • Output to output skew <35ps • +/-300 ppm frequency accuracy on output clocks • +/-50ppm on all output frequencies with Spread Off Block Diagram STOP LOGIC XIN/CLKIN X2 DIF(3:0) CONTROL LOGIC SPREAD FS(2:0) SDATA SCLK SEL14M_25M# DIF_STOP# PROGRAMMABLE SPREAD PLL 4 IREF 2 OSC REFOUT |
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