ICS950401 datasheet(1/15 Pages) RENESAS

部件名	ICS950401

功能描述	AMD - K8™ System Clock Chip

PDF	15 Pages

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制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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ICS950401

0499C—11/01/04

Block Diagram

Functionality

Pin Configuration

Recommended Application:

AMD K8 Systems

Output Features:

•

2 - Differential pair push-pull CPU clocks @ 3.3V

•

7 - PCI (Including 1 free running) @3.3V

•

3 - Selectable HT/PCI 66/33MHz @3.3V

•

1 - 48MHz, @3.3V fixed.

•

1 - 24/48MHz @ 3.3V

•

3 - REF @3.3V, 14.318MHz.

Features:

•

Up to 220MHz frequency support

•

Support power management: PCI stop and stop

clocks controlled by I

2C.

•

Spread spectrum for EMI reduction

•

Uses external 14.318MHz crystal

•I

2C programmability features

•

Supports Hypes transport technology (HT66 output).

AMD - K8™ System Clock Chip

*FS0/REF0 1

48 REF1/FS1*

VDDREF 2

47 GND

X1 3

46 VDDREF

X2 4

45 REF2/FS2*

GND 5

44 SPREAD*

*PCI33/HT66SEL# 6

43 VDDA

PCICLK33/HT66_0 7

42 GNDA

PCICLK33/HT66_1 8

41 CPUCLKT0

VDDPCI 9

40 CPUCLKC0

GND 10

39 GND

PCICLK33/HT66_2 11

38 VDDCPU

NC 12

37 CPUCLKT1

PCICLK0 13

36 CPUCLKC1

PCICLK1 14

35 VDD

GND 15

34 GND

VDDPCI 16

33 GNDA

PCICLK2 17

32 VDDA

PCICLK3 18

31 48MHz

VDDPCI 19

30 GND

GND 20

29 VDD

PCICLK4 21

28 24_48MHz/Sel24_48#*

PCICLK5 22

27 GND

PCICLK_F 23

26 SDATA

*PCI_STOP# 24

25 SCLK

48-SSOP/ TSSOP

* Internal Pull-Up Resistor

** Internal Pull-Down Resistor

FS2

FS1

FS0

PCI33_HT66

SEL#

CPU

PCI33

PCI33_HT66

COMMENTS

0

X

Hi-Z

Tri-State Mode

0

1

0

X

X/6

X/3

Bypass Mode

0

1

X

X/6

Bypass Mode

0

1

0

X

180.00

30.00

60.00

10% under-clk

0

1

X

220.00

36.56

73.12

10% over-clk

1

0

X

100.00

33.33

33.33/66.66

Athlon Compatible

1

0

1

X

133.33

33.33

33.33/66.66

Athlon Compatible

1

0

X

166.66

33.33

33.33/66.66

Reserved

1

X

200.00

33.33

33.33/66.66

Hammer Operation

PLL2

PLL1

Spread

Spectrum

PCICLK (5:0)

CPUCLKT (1:0)

CPUCLKC (1:0)

X1

X2

XTAL

OSC

CPU

DIVDER

PCI

DIVDER

Stop

SDATA

SCLK

FS (2:0)

SPREAD

24_48SEL#

PCI33/HT66SEL#

PCI_STOP#

Control

Logic

REF (2:0)

48MHz

24_48MHz

/ 2

PCICLK_F

PCICLK33/HT66(2:0)

X 2

Config.

Reg.

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