ICS9FG104

DATASHEET Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Description The ICS9FG104 is a Frequency Timing Generator that provides 4 differential output pairs that are compliant to the Intel CK410 specification. It also provides support for PCI-Express 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-tooutput skew of less than 35 ps. The ICS9FG104 also provides a copy of the reference clock. Frequency selection can be accomplished via strap pins or SMBus control. ICS9FG104 Features/Benefits Generates common frequencies from 14.318 MHz or 25 MHz Crystal or reference input 4 - 0.7V current-mode differential output pairs Supports Serial-ATA at 100 MHz Two spread spectrum modes: 0 to -0.5 downspread and +/-0.25% centerspread Unused inputs may be disabled in either driven or Hi-Z state for power management. M/N Programming www.DataSheet4U.com Key Specifications Output cycle-to-cycle jitter < 50 ps Output to output skew < 35 ps +/-300 ppm frequency accuracy on output clocks +/- 150 ppm frequency accuracy @ 100 MHz outputs 28-pin SSOP/TSSOP package Available in RoHS compliant packaging Funtional Block Diagram XIN/CLKIN OSC X2 2 R EF OU T PROGRAMMABLE SPREAD PLL STOP LOGIC 4 DIF(3:0) SPREAD SEL14M_25M# DIF_STOP# FS(2:0) S...