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

1542E 12/16/10

ICS9FG108D

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

6

Electrical Characteristics - Input/Supply/Common Output Parameters

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS NOTES

Input High Voltage

3.3 V +/-5%

2

V

V1

Input Low Voltage

3.3 V +/-5%

V

0.8

V

1

Input High Current

-5

5

uA

1

up resistors

-5

uA

1

resistors

-200

uA

1

186

215

mA

1

22

25

mA

1

156

179

mA

1

22

25

mA

1

148

170

mA

1

22

25

mA

1

30

35

mA

1

22

25

mA

1

205

236

mA

1

24

28

mA

1

172

198

mA

1

24

28

mA

1

163

187

mA

1

24

28

mA

1

33

38

mA

1

24

28

mA

1

SEL14M_25M# = 0

22.50

25.00

28.00

MHz

3

SEL14M_25M# = 1

12.89 14.31818

15.75

MHz

3

Pin Inductance

1

7nH

1

Logic Inputs

1.5

5

pF

1

Output pin capacitance

6

pF

1

clock

1.8

ms

1,2

clock

3ms

1,2

SEL14M_25M# = 0

32.541

kHz

1,3,4

SEL14M_25M# = 1

32.467

kHz

1,3,4

Spread Modulation %

Down Spread Selected

-0.5

%

1,3,4

Spread Modulation %

Center Spread Selected

+/-0.25

%

1,3,4

DIF output enable

DIF output enable after

DIF_Stop# de-assertion

15

ns

1

Input Rise and Fall times

20% to 80% of VDD

5

ns

1

All DIF pairs stopped in Hi-Z

mode

ppm frequency accuracy on PLL outputs.

these frequencies accordingly. The output frequecy selected by the FS inputs will also scale. For example, 27MHz

input with an FS selection of 100MHz will yield an output frequency of 27/25 x 100 = 108MHz.

All DIF pairs stopped in Hi-Z

mode

All DIF pairs stopped in driven

mode

Input/Output

Capacitance

1

Clk Stabilization

1,2

Input Low Current

Operating Supply Current

DIF_STOP# Current

Input Frequency

3

All DIF pairs stopped in driven

mode

SPEC

Operating Supply Current

DIF_STOP# Current

Spread Modulation

Frequency