Integrated

Circuit

Systems, Inc.

ICS953002

0924—11/18/09

Pin Configuration

Recommended Application:

Chipset for P4 type processor with PCI-Express

Output Features:

•

2 - 0.7V current-mode differential CPU pairs

•

1 - 0.7V current-mode differential CPU/PCI-Express

selectable pair

•

6 - PCI, 33MHz

•

2 - REF, 14.318MHz

•

3 - 3V66, 66.66MHz

•

1 - 48MHz

•

1 - 24/48MHz

•

5 - PCI-Express 0.7V current mode differential pairs

Key Specifications:

•

CPU outputs cycle-cycle jitter < 85ps

•

3V66 outputs cycle-cycle jitter < 250ps

•

PCI outputs cycle-cycle jitter < 500ps

Programmable Timing Control Hub™ for Next Gen P4™ processor

Functionality

Features/Benefits:

•

Programmable output frequency.

•

Programmable asynchronous 3V66&PCI frequency.

•

Programmable asynchronous PCI-Express frequency.

•

Programmable output divider ratios.

•

Programmable output skew.

•

Programmable spread percentage for EMI control.

•

Watchdog timer technology to reset system if system

malfunctions.

•

Programmable watch dog safe frequency.

•

Support I2C Index read/write and block read/write

operations.

•

Uses external 14.318MHz reference input, external

crystal load caps are required for frequency tuning.

ADVANCE INFORMATION documents contain information on products in the formative or design phase development. Characteristic data and other specifications are design goals.

ICS reserves the right to change or discontinue these products without notice. Third party brands and names are the property of their respective owners.

B0b4

B0b3

B0b2

B0b1

B0b0

PCI-EX

AGP

PCI

CPU

FS4

FS3

FSL2

FSL1

FSL0

MHz

MHz

MHz

MHz

00

0

0

0

100.00

66.66

33.33

266.66

00

0

0

1

100.00

66.66

33.33

133.33

00

0

1

0

100.00

66.66

33.33

200.00

00

0

1

1

100.00

66.66

33.33

166.66

00

1

0

0

N/A

N/A

N/A

N/A

00

1

0

1

100.00

66.66

33.33

100.00

00

1

1

0

100.00

66.66

33.33

400.00

00

1

1

1

100.00

66.66

33.33

200.00

01

0

0

0

100.00

66.66

33.33

100.00

01

0

0

1

100.00

66.66

33.33

133.33

01

0

1

0

100.00

66.66

33.33

200.00

01

0

1

1

100.00

66.66

33.33

166.66

01

1

0

0

100.00

66.66

33.33

100.00

01

1

0

1

100.00

66.66

33.33

133.33

01

1

1

0

100.00

66.66

33.33

200.00

01

1

1

1

100.00

66.66

33.33

166.66

1

0

0

0

0

100.00

66.66

33.33

266.66

10

0

0

1

100.00

66.66

33.33

133.33

10

0

1

0

100.00

66.66

33.33

200.00

10

0

1

1

100.00

66.66

33.33

166.66

10

1

0

0

N/A

N/A

N/A

N/A

10

1

0

1

100.00

66.66

33.33

100.00

10

1

1

0

100.00

66.66

33.33

400.00

10

1

1

1

100.00

66.66

33.33

200.00

11

0

0

0

100.00

66.66

33.33

266.66

11

0

0

1

100.00

66.66

33.33

133.33

11

0

1

0

100.00

66.66

33.33

200.00

11

0

1

1

100.00

66.66

33.33

166.66

11

1

0

0

N/A

N/A

N/A

N/A

11

1

0

1

100.00

66.66

33.33

100.00

11

1

1

0

100.00

66.66

33.33

400.00

11

1

1

1

100.00

66.66

33.33

200.00

VDDA

1

56 GND

GND

2

55 IREF

VDDREF

3

54 CPUCLKT0

**FS

4

53 CPUCLKC0

FS

5

52 GNDCPU

X1

6

51 CPUCLKT1

X2

7

50 CPUCLKC1

GNDREF

8

49 VDDCPU

VttPWR_GD/PD#

9

48 SDATA

VDDPCI 10

47 CPUCLKT2_ITP/PCIEXT0

**FS

11

46 CPUCLKC2_ITP/PCIEXC0

**FS3/~PCICLK1 12

45 VDDPCIEX

PCICLK2 13

44 PCIEXT1

PCICLK3 14

43 PCIEXC1

GNDPCI 15

42 PCIEXT2

VDDPCI 16

41 PCIEXC2

PCICLK4 17

40 GNDPCIEX

PCICLK5 18

39 VDDPCIEX

GNDPCI 19

38 PCIEXT3

*Turbo# 20

37 PCIEXC3

Reset# 21

36 PCIEXT4

VDD48 22

35 PCIEXC4

**Mode0/48MHz

23

34 PCIEXT5/CPU_STOP#*

*Sel24_48#/24_48MHz

24

33 PCIEXC5/PCI_PCIEX_STOP#*

GND48 25

32 GNDPCIEX

VDD3V66 26

31 SCLK

**ITP_EN/3V66_2 27

30 GND3V66

**FS4/3V66_1 28

29 3V66_0

~This output is default 2X drive strength.

56-Pin SSOP

*These inputs have 120K internal pull-up resistors to VDD.

**These inputs have 120K internal pull-down resistors to GND.