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ICS9FG104

Integrated Circuit Systems
Part Number ICS9FG104
Manufacturer Integrated Circuit Systems
Description Programmable FTG for Differential P4TM CPU
Published Jun 17, 2006
Detailed Description www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS9FG104 Programmable FTG for Differential P4TM CPU, PCI-Expres...
Datasheet PDF File ICS9FG104 PDF File

ICS9FG104
ICS9FG104

Overview
www.
DataSheet4U.
com Integrated Circuit Systems, Inc.
ICS9FG104 Programmable FTG for Differential P4TM CPU, PCI-Express & SATA Clocks Recommended Application: Pin Configuration Frequency Timing Generator for Differential CPU & SATA XIN/CLKIN 1 clocks X2 2 Features: VDD 3 • Generates common CPU frequencies from 14.
318 GND 4 MHz or 25 MHz REFOUT 5 • Crystal or reference input FS2 6 • 4 - 0.
7V current-mode differential output pairs DIF_3 7 • Supports Serial-ATA at 100 MHz DIF_3# 8 VDD 9 • Two spread spectrum modes: 0 to -0.
5 downspread and +/-0.
25% centerspread GND 10 DIF_2 11 • Unused inputs may be disabled in either driven or HiZ state for power management.
DIF_2# 12 • M/N Programming SDATA 13 SCLK 14 Key Specifications: 28-pin • 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 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.
00 0 1 1 0 333.
00 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.
00 1 1 1 0 333.
00 1 1 1 1 400.
00 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VDDA GNDA IREF FS0 FS1 DIF_0 DIF_0# VDD GND DIF_1 DIF_1# SEL14M_25M# SPREAD DIF_STOP# SSOP/TSSOP ww w.
D ata Sh eet 4U .
co m 0839G—06/05/06 ICS9FG104 www.
DataSheet4U.
com Integrated Circuit Systems, Inc.
ICS9FG104 Pin Description PIN # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 PIN NAME XIN/CLKIN X2 VDD GND REFOUT FS2 DIF_3 DIF_3# VDD GND DIF_2 DIF_2# SDATA SCLK DIF_STOP# SPREAD SEL14M_25M# DIF_1# DIF_1 GND VDD DIF_0# DIF_0 FS1 FS0 IREF PIN TYPE IN OUT PWR IN OUT IN OUT OUT PWR PWR OUT OUT I/O IN IN IN IN OUT OUT PWR PWR OUT OUT IN IN OUT PWR PWR DESCRIPTION Crystal input or Reference Clock input Crystal output, Nominally 14.
318MHz Power supply, nominal 3.
3V Ground pin.
Reference Clock output F...


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