Integrated

Circuit

Systems, Inc.

ICS952607

Advance Information

0734—07/16/04

Pin Configuration

Recommended Application:

CK409 Compliant clock for Next Gen P4 Processor

Output Features:

•

2 - 0.7V current-mode differential CPU pairs

•

1 - 0.7V current-mode differential SRC pair

•

9 - PCI, 3 free running, 33MHz

•

3 - REF, 14.318MHz

•

3 - 3V66, 66.66MHz

•

1 - VCH/3V66, selectable 48MHz or 66MHz

•

2 - 48MHz

•

1 - 24/48MHz

Key Specifications:

•

CPU/SRC outputs cycle-cycle jitter < 125ps

•

3V66 outputs cycle-cycle jitter < 250ps

•

PCI outputs cycle-cycle jitter < 250ps

•

+/- 300ppm frequency accuracy on CPU & SRC clocks

Programmable Timing Control Hub™ for Next Gen P4™ processor

Functionality

Features/Benefits:

•

QuadRom

•

Programmable output frequency.

•

Programmable asynchronous 3V66&PCI frequency.

•

Programmable output divider ratios.

•

Programmable output rise/fall time.

•

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.

•

Supports tight ppm accuracy clocks for Serial-ATA

•

Supports spread spectrum modulation, 0 to -0.5%

down spread and +/- 0.25% center spread

•

Supports CPU clks up to 400MHz

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.

48-pin SSOP

Bit4 Bit3 Bit2 Bit1 Bit0

CPU

AGP

PCI

FS4FS3 FS2FS1 FS0

MHz

MHz

MHz

000

00

100.00

66.66

33.33

000

01

200.00

66.66

33.33

000

10

133.33

66.66

33.33

000

11

166.67

66.66

33.33

0

0

1

0

0

200.00

66.66

33.33

001

01

400.00

66.66

33.33

001

10

266.67

66.66

33.33

001

11

333.33

66.66

33.33

010

00

100.99

67.33

33.66

010

01

201.98

67.33

33.66

010

10

134.65

67.33

33.66

010

11

168.31

67.32

33.66

01

1

00

115.00

76.66

38.33

011

01

230.00

76.66

38.33

011

10

153.33

76.66

38.33

011

11

191.67

76.66

38.33

1

00

00

100.00

66.66

33.33

100

01

200.00

66.66

33.33

100

10

133.33

66.66

33.33

100

11

166.67

71.43

35.71

1

0

1

0

0

200.00

66.66

33.33

101

01

400.00

66.66

33.33

101

10

266.67

66.66

33.33

101

11

333.33

66.66

33.33

110

00

105.00

69.99

35.00

110

01

210.00

69.99

35.00

110

10

140.00

69.99

35.00

110

11

175.00

69.99

35.00

11

1

00

110.00

73.33

36.66

111

01

220.00

73.33

36.66

111

10

146.66

73.33

36.66

111

11

183.34

73.33

36.66

Note: FS1 and FS0 are equal to Intel CK409-defined FSA and FSB,

respectively.

*FS1/REF0

1

48 VDDA

*FS0/REF1

2

47 GND

REF2

3

46 IREF

VDDREF

4

45 Reset#

X1

5

44 GND

X2

6

43 CPUCLKT1

GND

7

42 CPUCLKC1

**FS2/PCICLK_F0

8

41 VDDCPU

**FS4/PCICLK_F1

9

40 CPUCLKT0

PCICLK_F2 10

39 CPUCLKC0

VDDPCI 11

38 GND

GND 12

37 SRCCLKT

^^PCICLK0 13

36 SRCCLKC

PCICLK1 14

35 VDD

PCICLK2 15

34 VttPWR_GD/PD#

PCICLK3 16

33 SDATA

VDDPCI 17

32 SCLK

GND 18

31 3V66_0

PCICLK4 19

30 3V66_1

PCICLK5 20

29 GND

**Sel24_48#/24_48MHz 21

28 VDD3V66

**FS3/48MHz_0 22

27 3V66_2

48MHz_1 23

26 3V66_3/VCH

GND 24

25 VDD48

^^ An external 2.2K pull-down resistor is needed on this pin

* This pin have 120K pull-up to VDD

** This pin have 120K pull-down to GND