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ICS9FG108D Datasheet(PDF) 1 Page - Integrated Device Technology |
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ICS9FG108D Datasheet(HTML) 1 Page - Integrated Device Technology |
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ICS9FG108D IDTTM Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA 1542E 12/16/10 Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA DATASHEET 1 Description ICS9FG108D is a Frequency Timing Generator that provides 8 differential output pairs that are compliant to the Intel CK410 specification. It also provides support for PCI-Express, next generation I/O, and SATA. The part synthesizes several output frequencies from either a 14.31818 MHz crystal or a 25 MHz crystal. The device 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 65 ps. ICS9FG108D also provides a copy of the reference clock. Frequency selection can be accomplished via strap pins or SMBus control. Key Specifications • Output cycle-to-cycle jitter < 50 ps • Output to output skew < 65 ps • +/-300 ppm frequency accuracy on output clocks • +/-50 ppm at any frequency with spread off Features/Benefits • Generates common frequencies from 14.318 MHz or 25 MHz • Crystal or reference input • 8 - 0.7V current-mode differential output pairs • Supports Serial-ATA at 100 MHz • Two spread spectrum modes: 0 to -0.5 down spread and +/-0.25% center spread • Unused inputs may be disabled in either driven or Hi-Z state for power management. Functional Block Diagram STOP LOGIC XIN/CLKIN X2 DIF(7:0) CONTROL LOGIC SPREAD FS(2:0) SDATA SCLK SEL14M_25M# DIF_STOP# PROGRAMMABLE SPREAD PLL 8 IREF OSC R E FO U T OE(7:0) |
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