ICS9148-58 datasheet(3/14 Pages) ICST

Part #	ICS9148-58

Description	Frequency Generator & Integrated Buffers for PENTIUM/ProTM

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Manufacturer	ICST [Integrated Circuit Systems]

Direct Link	http://www.icst.com

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ICS9148-58

Functionality

VDD1, 2, 3, 4 = 3.3V±5%,VDDL = 2.5V±5% or 3.3 ±5%, TA= 0 to 70°C

Crystal (X1, X2) = 14.31818MHz

CPU3.3#_2.5

Input level

(Latched Data)

Buffer Selected for

operation at:

12.5V VDD

03.3V VDD

CPU 3.3#_2.5V Buffer selector for CPUCLK drivers.

Power Management Functionality

Mode Pin - Power Management Input Control

MODE, Pin 25

(Latched Input)

Pin 17

Pin 18

0

CPU_STOP#

(INPUT)

PCI_STOP#

(INPUT)

1

SDRAM 11

(OUTPUT)

SDRAM 10

(OUTPUT)

CPU_STOP#

PCI_STOP#

AGP,

CPUCLK

Outputs

PCICLK

(0:5)

PCICLK_F,

REF,

24/48MHz

and SDRAM

Crystal

OSC

VCO

0

1

Stopped Low

Running

1

Running

1

0

Running

Stopped Low

Running

FS2

FS1

FS 0

CP U

(M H z)

SD R A M ( M H z)

P C I (M H z)

A G P (M H z)

S D _ S EL= 1

S D _ S EL= 0

1

10 0. 2

100 . 2

66.6

33.3

66. 6

1

0

9 5 . 25

95. 25

63.5

31.75

63. 5

1

0

1

8 3 . 3

83. 3

66.6

33.3

66. 6

1

0

1 3 3 . 3

133 . 3

88.7

44.3

88. 7

01

1

7 5

75

37.5

7 5

0

1

0

124

82.7

41.3

82. 7

0

1

6 6 . 8

66. 8

66.8

33.4

66. 8

0

11 2

112

74.7

37.3

7 4. 7

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