ICS9250-10 datasheet(1/16 Pages) ICST

tên linh kiện	ICS9250-10

Giải thích chi tiết về linh kiện	Frequency Timing Generator for Pentium II Systems

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nhà sản xuất	ICST [Integrated Circuit Systems]

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Integrated

Circuit

Systems, Inc.

General Description

Features

ICS9250-10

PRODUCT PREVIEW documents contain information on new

products in the sampling or preproduction phase of development.

Characteristic data and other specifications are subject to change

without notice.

Preliminary Product Preview

Block Diagram

Pentium II is a trademark of Intel Corporation

I

2C is a trademark of Philips Corporation

Frequency Timing Generator for Pentium II Systems

9250-10 Rev J 6/15/99

Pin Configuration

Generates the following system clocks:

- 3 CPU (2.5V) 66.6/100 MHz (up to 133MHz through

I2C selection)

- 9 SDRAM (3.3V) up to 133MHz

- 8PCI(3.3V)@33.3MHz

-2IOAPIC(2.5V)@16.67or33.3MHz

- 2 Hublink clocks (3.3 V) @ 66.6 MHz

- 2 USB (3.3V) @ 48 MHz ( Non spread spectrum)

- 1REF(3.3V)@14.318MHz

Supports spread spectrum modulation ,

down spread 0 to -0.5%

I2C support for power management

Efficient power management scheme through PD#

Uses external 14.138 MHz crystal

56-Pin 300 mil SSOP

The ICS9250-10 is a single chip clock for Intel Pentium II.

It provides all necessary clock signals for such a system.

Spread spectrum may be enabled through I2C programming.

Spread spectrum typically reduces EMI by 8dB to 10 dB.

This simplifies EMI qualification without resorting to board

design iterations or costly shielding. The ICS9250-10

employs a proprietary closed loop design, which tightly

controls the percentage of spreading over process and

temperature variations.

Power Groups

VDD0, GND0 =REF & Crystal

VDD1,GND1=3V66[1:0]

VDD2,GND2=PCICLK[7:0]

VDD3,GND3=PLLcore

VDD4,GND4= 48MHz[1:0]

VDD5,GND5 =SDRAM_F,SDRAM[7:0]

VDDL0,GNDL0=CPUCLK[2:0]

VDDL1,GNDL1=IOAPIC[1:0]

*60K ohm pull-up to VDD on indicated inputs.

Số phần tương tự - ICS9250-10

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Renesas Technology Corp	ICS9250-10	432Kb / 16P	Frequency Timing Generator for Pentium II Systems 12/14/01

More results

Mô tả tương tự - ICS9250-10

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Integrated Circuit Syst...	ICS9248-107	141Kb / 14P	Frequency Timing Generator for PENTIUM II Systems
	ICS9248-157	151Kb / 11P	Frequency Timing Generator for Pentium II Systems
	ICS9248-61	291Kb / 9P	Frequency Timing Generator for Pentium II Systems Rev B 1/8/99
	ICS9248-66	382Kb / 11P	Frequency Timing Generator for PENTIUM II Systems
	ICS9248-73	356Kb / 15P	Frequency Timing Generator for Pentium II Systems Rev B 2/10/00
	ICS9248-78	604Kb / 13P	Frequency Timing Generator for Pentium II Systems Rev A 7/21/99
	ICS9248-97	466Kb / 14P	Frequency Timing Generator for PENTIUM II Systems Rev E 08/18/00
	ICS9248-50	256Kb / 10P	Frequency Timing Generator for Pentium II Systems
Renesas Technology Corp	ICS9250-10	432Kb / 16P	Frequency Timing Generator for Pentium II Systems 12/14/01
Renesas Technology Corp	ICS9248-77	676Kb / 15P	Frequency Timing Generator for PENTIUM II Systems 2019

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