Integrated

Circuit

Systems, Inc.

ICS952623

Advance Information

0758—02/08/05

Pin Configuration

Recommended Application:

CK409 clock, Intel Yellow Cover part

Output Features:

•

3 - 0.7V current-mode differential CPU pairs

•

1 - 0.7V current-mode differential SRC pair

•

7 - PCI (33MHz)

•

3 - PCICLK_F, (33MHz) free-running

•

1 - USB, 48MHz

•

1 - DOT, 48MHz

•

2 - REF, 14.318MHz

•

4 - 3V66, 66.66MHz

•

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

Key Specifications:

•

CPU/SRC outputs cycle-cycle jitter < 125ps

•

3V66 outputs cycle-cycle jitter < 250ps

•

PCI outputs cycle-cycle jitter < 250ps

•

CPU outputs skew: < 100ps

•

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

Programmable Timing Control Hub™ for Next Gen P4™ processor

Functionality

Features/Benefits:

•

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 in test mode

•

Uses external 14.318MHz crystal

•

Supports undriven differential CPU, SRC pair in PD#

and CPU_STOP# for power management.

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.

56-pin SSOP & TSSOP

REF0

1

56 FS_B

REF1

2

55 VDDA

VDDREF

3

54 GNDA

X1

4

53 GND

X2

5

52 IREF

GND

6

51 FS_A

PCICLK_F0

7

50 CPU_STOP#

PCICLK_F1

8

49 PCI_STOP#

PCICLK_F2

9

48 VDDCPU

VDDPCI 10

47 CPUCLKT2

GND 11

46 CPUCLKC2

PCICLK0 12

45 GND

PCICLK1 13

44 CPUCLKT1

PCICLK2 14

43 CPUCLKC1

PCICLK3 15

42 VDDCPU

VDDPCI 16

41 CPUCLKT0

GND 17

40 CPUCLKC0

PCICLK4 18

39 GND

PCICLK5 19

38 SRCCLKT

PCICLK6 20

37 SRCCLKC

PD# 21

36 VDD

3V66_0 22

35 Vtt_PWRGD#

3V66_1 23

34 VDD48

VDD3V66 24

33 GND

GND 25

32 48MHz_DOT

3V66_2 26

31 48MHz_USB

3V66_3 27

30 SDATA

SCLK 28

29 3V66_4/VCH

B6b5 FS_A FS_B

CPU

MHz

SRC

MHz

3V66

MHz

PCI

MHz

REF

MHz

MHz

0

0

100

100/200 66.66 33.33 14.318

48.00

0

1

200

100/200 66.66 33.33 14.318

48.00

1

0

133

100/200 66.66 33.33 14.318

48.00

1

1

166

100/200 66.66 33.33 14.318

48.00

1

MID

Hi-Z

Hi-Z

Hi-Z

Hi-Z

Hi-Z

Hi-Z

0

0

200

100/200 66.66 33.33 14.318

48.00

0

1

400

100/200 66.66 33.33 14.318

48.00

1

0

266

100/200 66.66 33.33 14.318

48.00

1

1

333

100/200 66.66 33.33 14.318

48.00

0

1