ICS932S422C datasheet(9/21 Pages) ICST

Part #	ICS932S422C

Description	PCIe Gen 2 main Clock for Intel-based Servers

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Manufacturer	ICST [Integrated Circuit Systems]

Direct Link	http://www.icst.com

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9

Integrated

Circuit

Systems, Inc.

ICS932S422C

1412A—12/10/07

Electrical Characteristics - USB48MHz

PARAMETER

SYMBOL

CONDITIONS*

MIN

TYP

MAX

UNITS

NOTES

Long Accuracy

ppm

see Tperiod min-max values

-100

100

ppm

1,2

Clock period

Tperiod

48.00MHz output nominal

20.8313

20.8354

ns

2

Output Impedance

RDSP

VO = VDD*(0.5)

12

55

Ω

1

Output High Voltage

VOH

IOH = -1 mA

2.4

V

1

Output Low Voltage

VOL

IOL = 1 mA

0.55

V

1

V OH @MIN = 1.0 V

-29

mA

1

VOH@MAX = 3.135 V

-33

mA

1

VOL @ MIN = 1.95 V

29

mA

1

VOL @ MAX = 0.4 V

27

mA

1

Rise Time

tr_USB

VOL = 0.4 V, VOH = 2.4 V

12

ns

1

Fall Time

tf_USB

VOH = 2.4 V, VOL = 0.4 V

12

ns

1

Duty Cycle

dt1

VT = 1.5 V

45

55

%1

Group Skew

tskew

VT = 1.5 V

250

ps

1

Jitter, Cycle to cycle

tjcyc-cyc

VT = 1.5 V

500

ps

1

*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%, CL = 5 pF with Rs = 22

Ω

1Guaranteed by design and characterization, not 100% tested in production.

Output High Current

IOH

Output Low Current

IOL

Electrical Characteristics - REF-14.318MHz

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Notes

Long Accuracy

ppm

see Tperiod min-max values

-300

300

ppm

1,2

Clock period

Tperiod

14.318MHz output nominal

69.8270

69.8550

ns

2

Output High Voltage

VOH

IOH = -1 mA

2.4

V

1

Output Low Voltage

VOL

IOL = 1 mA

0.4

V

1

V OH @MIN = 1.0 V

-33

mA

1

VOH@MAX = 3.135 V

-33

mA

1

VOL @ MIN = 1.95 V

30

mA

1

VOL @ MAX = 0.4 V

38

mA

1

Rise Time

tr1

VOL = 0.4 V, VOH = 2.4 V

0.5

2

ns

1

Fall Time

tf1

VOH = 2.4 V, VOL = 0.4 V

0.5

2

ns

1

Skew

tsk1

VT = 1.5 V

500

ps

1

Duty Cycle

dt1

VT = 1.5 V

45

55

%

1

Jitter

tjcyc-cyc

VT = 1.5 V

1000

ps

1

*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%, CL = 5 pF with Rs = 22

Ω (Rs is used in USB48MHz test only)

1Guaranteed by design and characterization, not 100% tested in production.

2 All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is at 14.31818MHz

Output High Current

IOH

Output Low Current

IOL

Electrical Characteristics - Differential Jitter Parameters

PARAMETER

Symbol

Conditions

Min

TYP

Max

Units

Notes

t

jphasePLL

PCIe Gen 1

86

ps (p-p)

1,2

t

jphaseLo

PCIe Gen 2

10kHz < f < 1.5MHz

3ps (RMS)

1,2

t

jphaseHigh

PCIe Gen 2

1.5MHz < f < Nyquist (50MHz)

3.1

ps (RMS)

1,2

tjphFBD1_3.2

G

FBD1 3.2/4G

11MHz to 33MHz

3ps (RMS)

1,2

tjphFBD1_4.0

G

FBD1 4.8G

11MHz to 33MHz

2.5

ps (RMS)

1,2

*TA = 0 - 70°C; Supply Voltage VDD = 3.3 V +/-5%

1Guaranteed by design and characterization, not 100% tested in production.

Jitter, Phase

2See http://www.pcisig.com for compelte specs

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