Datasheet > ICS9250-19

ICS9250-19

更新时间： 2024-11-12 22:55:27

品牌	Logo	应用领域
矽成 - ICSI		/
页数	文件大小	规格书
15页	563K
描述
Frequency Generator & Integrated Buffers for Celeron & PII/III⑩

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数据手册

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ICS9250-19 数据手册

Integrated

Circuit

Systems, Inc.

ICS9250-19

Frequency Generator & Integrated Buffers for Celeron & PII/III™

Recommended Application:

BX, Appollo Pro 133 type of chip set.

Output Features:

Pin Configuration

•

3 - CPUs @2.5V, up to 150MHz.

17 - SDRAM @ 3.3V, up to 150MHz.

7 - PCI @3.3V

2 - IOAPIC @ 2.5V

1 - 48MHz, @3.3V fixed.

1 - 24MHz @ 3.3V

2 - REF @3.3V, 14.318MHz.

Features:

•

Up to 150MHz frequency support

Support power management: CPU, PCI, stop and Power

down Mode form I²C programming.

•

Spread spectrum for EMI control (0 to -0.5%, ± 0.25%).

Uses external 14.318MHz crystal

Key Specifications:

•

CPU – CPU: <175ps

CPU – PCI: 1 - 4ns

PCI – PCI: <500ps

SDRAM - SDRAM: <250ps

56-Pin SSOP

* Internal Pull-up Resistor of 240K to 3.3V on indicated inputs

** Internal Pull-down resistor of 240K to GND on indicated inputs.

Block Diagram

Functionality

CPU

(MHz)

133

FS3

FS2

FS1

FS0

PCICLK (MHz)

33.3 (CPU/4)

31 (CPU/4)

37.5 (CPU/4)

35 (CPU/4)

124

150

140

105

110

115

120

100.0

133

112

103

66.6

83.3

35 (CPU/3)

36.67 (CPU/3)

38.33 (CPU/3)

40.00 (CPU/3)

33.43 (CPU/3)

44.33 (CPU/3)

37.33 (CPU/3)

34.33 (CPU/2)

33.40 (CPU/2)

41.65 (CPU/2)

37.5 (CPU/2)

41.33 (CPU/2)

124

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

9250-19 Rev C 4/12/01

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...15

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