Datasheet > ICS9248F-110

ICS9248F-110

更新时间： 2024-09-26 09:58:55

品牌	Logo	应用领域
艾迪悌 - IDT		光电二极管
页数	文件大小	规格书
14页	152K
描述
Clock Generator, PDSO48, SSOP-48

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数据手册

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ICS9248F-110 数据手册

Integrated

Circuit

Systems, Inc.

ICS9248-110

AMD-K7^TMSystem Clock Chip

Recommended Application:

AMD-K7 based systems

Output Features:

Pin Configuration

**FS0/REF0

**FS1/REF1

GNDREF

VDDREF

GNDSD

SDRAM_OUT

VDDSD

•

3 differential pair open drain CPU clocks (2.7V external

pull-up; up to 150MHz achieviable through I²C)

RESERVED

CPUCLKC2

CPUCLKT2

GNDCPU

CUCLKC1

CPUCLKT1

GND

CPUCLKC0

CPUCLKT0

RESERVED

VDD

•

2 - AGPCLK @ 3.3V

8 - PCI @3.3V, including 1 free running

1 - 48MHz @ 3.3V

1 - 24/48MHz @ 3.3V

2- REF @3.3V, 14.318MHz.

GNDPCI

PCICLK_F

PCICLK0

VDDPCI

PCICLK1

PCICLK2

GNDPCI

PCICLK3

PCICLK4

VDDPCI

PCICLK5

PCICLK6

VDDAGP

AGP0

AGP1

GNDAGP

VDD48

Features:

•

Up to 150MHz frequency support

GND

PCI_STOP#

CPU_STOP

PD#

SPREAD#

FS2*

SDATA

SCLK

GND48

Support power management: CPU, PCI, stop and Power

down Mode from I²C programming.

•

Spread spectrum for EMI control -0.5% down spread

Uses external 14.318MHz crystal

FS pins for frequency select

48MHz

SEL24_48#/24-48MHz

Key Specifications:

•

CPU – CPU: <250ps

AGP-AGP: <250ps

PCI – PCI: <400ps

CPU - SDRAM_OUT: <400ps

CPU-AGP <250ps

48-Pin 300mil SSOP

* Internal 120K pullup resistor on indicated inputs

** Internal 240K pullup resistor on indicated inputs

Block Diagram

REF (1:0)

OSC

CPU_STOP#

Functionality

FS (2:0)

PLL

SPREAD#

CPUCLKT (2:0)

CPUCLKC (2:0)

SDRAM_OUT

CPU

STOP

CPU,

SDRAM

100.99

115

100.7

103

105

FS2

FS1

FS0

PCI

AGP

30.00

31.67

33.66

38.33

33.57

34.33

35.00

36.67

60.00

63.33

67.33

76.67

67.13

68.67

70.00

73.33

/ 2

/ 3

PD#

X 2

AGP (1:0)

PCI

STOP

PCICLK (6:0)

PCI_STOP#

PCICLK_F

48MHz

PLL2

110

24_48MHz

/ 2

SEL24_48#

ICS reserves the right to make changes in the device data identified in

this publication without further notice. ICS advises its customers to

obtain the latest version of all device data to verify that any

9248-110 Rev C 01/08/01

Third party brands and names are the property of their respective owners.

information being relied upon by the customer is current and accurate.

12 3 4 5 6 7...14

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