ICS9FG104DGILFT IDT, Integrated Device Technology Inc, ICS9FG104DGILFT Datasheet

IC FREQ TIMING GENERATOR 28TSSOP

ICS9FG104DGILFT

Manufacturer Part Number
ICS9FG104DGILFT
Description
IC FREQ TIMING GENERATOR 28TSSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Frequency Generatorr
Datasheet

Specifications of ICS9FG104DGILFT

Input
Clock, Crystal
Output
Differential
Frequency - Max
400MHz
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-TSSOP
Frequency-max
400MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
800-1255-2
9FG104DGILFT
Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA
Description
The ICS9FG104D 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-to-
output skew of less than 35 ps. The ICS9FG104D also provides a
copy of the reference clock. Frequency selection can be
accomplished via strap pins or SMBus control.
Key Specifications
Functional Block Diagram
IDT
®
Output cycle-to-cycle jitter < 50 ps
Output to output skew < 35 ps
+/-300 ppm frequency accuracy on output clocks
+/-50 ppm at any frequency w/spread off
Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA
XIN/CLKIN
X2
SPREAD
SEL14M_25M#
DIF_STOP#
FS(2:0)
SDATA
SCLK
2
CONTROL
OSC
LOGIC
PROGRAMMABLE
SPREAD PLL
1
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.
LOGIC
STOP
4
IREF
DIF(3:0)
ICS9FG104D
DATASHEET
1541C—12/16/10

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ICS9FG104DGILFT Summary of contents

Page 1

Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Description The ICS9FG104D 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 ...

Page 2

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Pin Configuration XIN/CLKIN VDD 3 GND 4 REFOUT 5 vFS2 6 DIF_3 7 DIF_3# 8 VDD 9 GND 10 DIF_2 11 DIF_2# 12 SDATA 13 ...

Page 3

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Pin Description PIN # PIN NAME 1 XIN/CLKIN VDD 4 GND 5 REFOUT 6 vFS2 7 DIF_3 8 DIF_3# 9 VDD 10 GND 11 DIF_2 ...

Page 4

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Absolute Max Symbol Parameter VDDxx 3.3V Supply Voltage Ts Storage Temperature Tambient Ambient Operating Temp•(Commerical Grade) Tambient Ambient Operating Temp•(Industrial Grade) Tcase Case Temperature ESD prot Input ESD ...

Page 5

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Electrical Characteristics - DIF 0.7V Current Mode Differential Pair 3.3 V +/-5 IENT A DD PARAMETER SYMBOL Output ...

Page 6

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Electrical Characteristics - REF-14.318/25 MHz 3.3 V +/-5%; IENT A DD PARAMETER SYMBOL Long Accuracy ppm Clock period T ...

Page 7

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA General SMBus serial interface information for the ICS9FG104D How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address DC • ICS ...

Page 8

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA SMBus Table: Device Control Register, READ/WRITE ADDRESS (DC/DD) Byte 0 Pin # Name 17 Bit 7 6 Bit 6 24 Bit 5 25 Bit 4 16 Bit 3 ...

Page 9

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA SMBus Table: Frequency Select Readback Register Byte 3 Pin # Name SEL14M_25M# 27 Bit 7 (FS3) 6 FS2 Bit 6 44 FS1 Bit 5 45 FS0 Bit 4 ...

Page 10

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA SMBus Table: Reserved Register Byte 7 Pin # Name - Bit 7 - Bit 6 - Bit 5 - Bit 4 - Bit 3 - Bit 2 - ...

Page 11

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA SMBus Table: PLL Frequency Control Register Byte 11 Pin # Name - PLL N Div7 Bit 7 - PLL N Div6 Bit 6 - PLL N Div5 Bit ...

Page 12

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA DIF_STOP# - Assertion (transition from '1' to '0') Asserting DIF_STOP# pin stops all DIF outputs that are set to be stoppable after their next transition. When the SMBus ...

Page 13

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Common Recommendations for Differential Routing L1 length, route as non-coupled 50ohm trace L2 length, route as non-coupled 50ohm trace L3 length, route as non-coupled 50ohm trace Rs Rt ...

Page 14

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Alternative Termination for LVDS and other Common Differential Signals (figure 3) Vdiff Vp-p Vcm 0.45v 0.22v 1.08 0.58 0.28 0.6 0.80 0.40 0.6 0.60 0.3 1.2 R1a = ...

Page 15

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA 28-Pin SSOP Package Drawing and Dimensions INDEX INDEX AREA AREA 45° Frequency Generator for CPU, QPI, ...

Page 16

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA 28-Pin TSSOP Package Drawing and Dimensions N E1 INDEX AREA Ordering Information Part/Order Number Shipping Packaging 9FG104DFLF 9FG104DFLFT Tape and Reel ...

Page 17

ICS9FG104D Frequency Generator for CPU, QPI, FBD, PCIe Gen 2 & SATA Revision History Rev. Issue Date Description 1. Created Rev D data sheet from original non revision specific version. 0.1 12/18/2008 2. Updated phase noise characterisitcs for Rev D. ...

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