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9FG108DFLFT

更新时间： 2024-02-06 11:38:14

品牌	Logo	应用领域
艾迪悌 - IDT		PC
页数	文件大小	规格书
18页	165K
描述
Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA

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9FG108DFLFT 数据手册

DATASHEET

ICS9FG108D

Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA

Description

Features/Benefits

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.

•

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.

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

Functional Block Diagram

XIN/CLKIN

R EFOUT

OSC

OE(7:0)

STOP

LOGIC

PROGRAMMABLE

SPREAD PLL

DIF(7:0)

SPREAD

SEL14M_25M#

DIF_STOP#

FS(2:0)

CONTROL

LOGIC

SDATA

SCLK

IREF

IDT^TMFrequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA

1542E 12/16/10

12 3 4 5 6 7...18

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