Integrated

Circuit

Systems, Inc.

ICS9342

Third party brands and names are the property of their respective owners.

9342 Rev E 9/06/00

Pin Configuration

48-Pin 300mil SSOP

Recommended Application:

Power PC System Clock

Output Features:

•

12- CPUs @ 3.3V, up to 146MHz

•

1- PCIREF @ 3.3V, up to 73MHz

•

1 - OUT 3.3V, 64MHz

•

1 - OUT/2 3.3V, OUT/2MHz

•

2 - REF @ 3.3V, 14.318MHz

Features:

•

Up to 146MHz frequency support

•

Support power management: CPU, PCI stop and power

down mode.

•

Spread spectrum for EMI control (0 to -0.5%, ± 0.25%).

•

Uses external 14.318MHz crystal

•

FS pins for frequency select

•

Support for industrial temperature range (-40C° to 85C°)

Key Specifications:

•

CPU Output Skew: <200ps

•

CPU - PCI Output Skew: <500ps

•

CPU Output Jitter: <150ps

•

PCI Output Jitter: <500ps

133MHz Clock Generator and Integrated Buffer for PowerPC™

VDDREF

REF1

REF0

GNDREF

X1

X2

*PD#

*CPU-STOP#

VDD

GND

*PCI_STOP#

*SS_EN#

VDDPCI

PCIREF

GNDPCI

*FS0

*FS1

*FS2

VDDFP

GNDFP

*TEST#/OUT

*BOOST#/OUT_DIV2

*PDFP#

VDDA

OUTSEL1*

VDDCPU

GNDCPU

CPU0

CPU1

CPU2

VDDCPU

GNDCPU

CPU3

CPU4

CPU5

VDDCPU

GNDCPU

CPU6

CPU7

CPU8

VDDCPU

GNDCPU

CPU9

CPU10

CPU11

VDDCPU

GNDCPU

OUTSEL0*

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

* Internal pull-up resistor of 120K to VDD

on indicated inputs.

Functionality

Block Diagram

SS_EN#

OUTSEL (1:0)

PLL2

PLL1

Spread

Spectrum

OUT

OUT/DIV2

CPUCLK (11:0)

12

2

PCIREF

X1

X2

XTAL

OSC

CPU

DIVDER

PCI

DIVDER

Stop

Stop

FS (2:0)

PD#

PDFP#

TEST#

BOOST#

Control

Logic

Config.

Reg.

/ 2

REF (1:0)

T

S

E

T2

S

F1

S

F0

S

F

U

P

C

z

H

M

I

C

P

z

H

M

F

E

R

z

H

M

11

1

1

3

3

.

3

3

13

3

.

3

38

1

3

.

4

1

11

1

0

0

0

.

0

0

13

3

.

3

38

1

3

.

4

1

11

0

1

3

3

.

3

83

3

.

3

38

1

3

.

4

1

11

0

0

6

6

.

6

63

3

.

3

38

1

3

.

4

1

10

1

1

3

3

.

3

3

16

6

.

6

68

1

3

.

4

1

10

1

0

0

0

.

0

0

16

6

.

6

68

1

3

.

4

1

10

0

1

3

3

.

3

86

6

.

6

68

1

3

.

4

1

10

0

0

6

6

.

6

66

6

.

6

68

1

3

.

4

1

ICS reserves the right to make changes in the device data identified in

this publication without further notice. ICS advises its customers to

obtain the latest version of all device data to verify that any

information being relied upon by the customer is current and accurate.