Datasheet > ICS9248YF-103

ICS9248YF-103

更新时间： 2024-09-24 22:09:47

品牌	Logo	应用领域
矽成 - ICSI		晶体外围集成电路光电二极管时钟
页数	文件大小	规格书
16页	393K
描述
Frequency Generator & Integrated Buffers for PENTIUM/ProTM

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数据手册

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ICS9248YF-103 数据手册

Integrated

Circuit

Systems, Inc.

ICS9248-103

Frequency Generator & Integrated Buffers for PENTIUM/Pro^TM

General Description

Features

Up to 137MHz frequency support

The ICS9248-103 is the single chip clock solution for

Notebook designs using the 440BX or the VIAApollo Pro 133

style chipset. It provides all necessary clock signals for such a

system.

Spread Spectrum for EMI control

Serial I²C interface for Power Management,

Frequency Select, Spread Spectrum

Provides the following system clocks

- 4-CPUs@2.5/3.3V, upto137MHz

(includingCPUCLK_F)

Spread spectrum may be enabled through I²C programming.

Spread spectrum typically reduces system EMI by 8dB to

10dB. This simplifies EMI qualification without resorting to

board design iterations or costly shielding. The ICS9248-103

employs a proprietary closed loop design, which tightly

controls the percentage of spreading over process and

temperature variations.

- 9-SDRAMs @3.3V, upto137MHz

(including SDRAM_F)

- 8-PCI@3.3V, CPU/2orCPU/3

(including 3 free running PCICLK_Fs)

- 1-24/48MHz@3.3V

-1-48MHz@3.3Vfixed

- 2-REF@3.3V,14.318MHz.

Efficient Power management scheme through PCI

andSTOPCLOCKS

Spread Spectrum ± .25%, & 0 to -0.5% down spread

Block Diagram

Pin Configuration

48-Pin SSOP

* Internal Pull-up Resistor of 120K to VDD

Power Groups

VDDLCPU,GNDLCPU=CPUCLK[2:0],CPUCLK_F

VDDSDR,GNDSDR=SDRAMCLKS[7:0],SDRAM_F

VDDPCI,GNDPCI=PCICLKS[6:0],PCICLK_F

VDD48,GND48=48MHz,24MHz

VDDREF,GNDREF=REF,X1,X2

VDDCOR=PLLCORE

Pentium is a trademark of Intel Corporation

I²C is a trademark of Philips Corporation

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

9248-103RevC 10/14/99

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

12 3 4 5 6 7...16

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与ICS9248YF-103相关器件

型号	品牌	获取价格	描述	数据表
ICS9248YF-103LF	IDT	获取价格	Processor Specific Clock Generator, 137MHz, PDSO48, SSOP-48
ICS9248YF-107	ICSI	获取价格	Frequency Timing Generator for PENTIUM II Systems
ICS9248YF-110	ICSI	获取价格	AMD-K7TM System Clock Chip
ICS9248YF-110LF	IDT	获取价格	Processor Specific Clock Generator, 115MHz, CMOS, PDSO48, 0.300 INCH, SSOP-48
ICS9248YF-112	IDT	获取价格	Processor Specific Clock Generator, 150MHz, PDSO48, 0.300 INCH, SSOP-48
ICS9248YF-112LF	IDT	获取价格	Processor Specific Clock Generator, 150MHz, PDSO48, 0.300 INCH, SSOP-48
ICS9248YF-112-T	ICSI	获取价格	Frequency Generator & Integrated Buffers for
ICS9248YF-114LF-T	IDT	获取价格	Processor Specific Clock Generator, 150MHz, PDSO48, 0.300 INCH, SSOP-48
ICS9248YF-114-T	ICSI	获取价格	AMD - K7⑩ System Clock Chip
ICS9248YF-114-T	IDT	获取价格	Processor Specific Clock Generator, 150MHz, PDSO48, 0.300 INCH, SSOP-48