Integrated

Circuit

Systems, Inc.

ICS952801

Advance Information

0719—01/22/03

Pin Configuration

Recommended Application:

SiS755/760 style chipset for AMD K8 Processor

Output Features:

•

2 - Pairs of differential push-pull K8CPU outputs

•

8 - PCICLK @ 3.3V

•

2 - AGPCLK @ 3.3V

•

3 - REF @ 3.3V

•

2 - ZCLK @ 3.3V

•

1 - 24_48MHz @ 3.3V

•

1 - 48MHz @ 3.3V

Key Specifications:

•

CPU Output Jitter <250ps

•

AGP Output Jitter <250ps

•

ZCLK Output Jitter <250ps

•

PCI Output Jitter <500ps

Programmable Timing Control Hub™ for K8™ processor

Functionality

Features/Benefits:

•

QuadRomTM frequency selection.

•

Selectable synchronous/asynchronous AGP/PCI/ZCLK

frequency

•

Linear Programmable CPU output frequency.

•

Linear Programmable AGP/PCI output 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 referience input.

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.

VDDREF 1

48 CPU_STOP#*

**FS0/REF0 2

47 GNDCPU

**FS1/REF1 3

46 CPUCLK8T1

**FS2/REF2 4

45 CPUCLK8C1

GNDREF 5

44 VDDCPU

X1 6

43 VDDCPU

X2 7

42 CPUCLK8T0

GNDZ 8

41 CPUCLK8C0

ZCLK0 9

40 GNDCPU

ZCLK1 10

39 AGND

VDDZ 11

38 AVDD

*PCI_STOP# 12

37 PD#*

**FS3/PCICLK_F0 13

36 GNDAGP

**FS4/PCICLK_F1 14

35 AGPCLK0

VDDPCI 15

34 AGPCLK1

GNDPCI 16

33 VDDAGP

PCICLK0 17

32 SCLK

PCICLK1 18

31 AVDD48

PCICLK2 19

30 48MHz

PCICLK3 20

29 24_48MHz/SEL24_48MHz*

PCICLK4 21

28 GND48

PCICLK5 22

27 SDATA

GNDPCI 23

26 PCICLK7

VDDPCI 24

25 PCICLK6

48-SSOP

* Internal Pull-Up Resistor

** Internal Pull-Down Resistor

Bit4

Bit3

Bit2

Bit1

Bit0

CPU

ZCLK

AGP

PCI

FS4FS3

FS2FS1

FS0

MHz

MHz

MHz

MHz

0

0

0

0

0

200.00

66.67

66.67

33.33

0

0

0

0

1

200.00

100.00

66.67

33.33

0

0

0

1

0

200.00

133.33

66.67

33.33

0

0

0

1

1

200.00

166.67

66.67

33.33

0

0

1

0

0

233.33

66.67

66.67

33.33

0

0

1

0

1

233.33

93.33

66.67

33.33

0

0

1

1

0

233.33

133.33

66.67

33.33

0

0

1

1

1

233.33

175.00

70.00

35.00

0

1

0

0

0

266.67

66.67

66.67

33.33

0

1

0

0

1

266.67

106.67

66.67

33.33

0

1

0

1

0

266.67

133.33

66.67

33.33

0

1

0

1

1

266.67

160.00

66.67

33.33

0

1

1

0

0

293.34

73.34

73.33

36.66

0

1

1

0

1

293.34

117.34

73.33

36.66

0

1

1

1

0

293.34

146.66

73.33

36.66

0

1

1

1

1

293.34

176.00

73.33

36.66

10

000

133.33

66.67

66.67

33.33

10

001

133.33

100.00

66.67

33.33

10

010

133.33

133.33

66.67

33.33

10

011

133.33

166.67

66.67

33.33

1

0

1

0

0

166.67

66.67

66.67

33.33

1

0

1

0

1

166.67

100.00

66.67

33.33

1

0

1

1

0

166.67

133.33

66.67

33.33

1

0

1

1

1

166.67

166.67

66.67

33.33

1

1

0

0

0

202.00

67.34

67.33

33.66

1

1

0

0

1

202.00

101.00

67.33

33.66

1

1

0

1

0

202.00

134.66

67.33

33.66

1

1

0

1

1

202.00

168.34

67.33

33.66

1

1

1

0

0

220.00

73.34

73.33

36.66

1

1

1

0

1

220.00

110.00

73.33

36.66

1

1

1

1

0

220.00

146.66

73.33

36.66

11

111

220.00

183.34

73.33

36.66