Datasheet > CY28325OXC-3T

CY28325OXC-3T

更新时间： 2024-11-17 02:56:03

品牌	Logo	应用领域
SPECTRALINEAR		/
页数	文件大小	规格书
18页	206K
描述
FTG for VIA⑩ Pentium 4⑩ Chipsets

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数据手册

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CY28325OXC-3T 数据手册

CY28325-3

FTG for VIA™ Pentium 4™ Chipsets

• Support SMBus Byte Read/Write and Block Read/Write

operations to simplify system BIOS development

Features

• Spread Spectrum Frequency Timing Generator for VIA

PT/M 266-800 Pentium^£4 Chipsets

• Vendor ID and Revision ID support

• Programmable-drive strength support

• Programmable-output skew support

• Three copies AGP Clocks

• Programmable clock output frequency with less than

1 MHz increment

• Integrated fail-safe Watchdog Timer for system

recovery

• Power management control inputs

• Available in 48-pin SSOP

• Selectable hardware or software-programmed clock

frequency when Watchdog Timer time-out

• Capable to generate system RESET after a Watchdog

Timer time-out occurs or a change in output frequency

via SMBus interface

CPU

x 3

AGP

x 3

PCI

x 9

REF

x 1

APIC

x 2

48M

x 1

24_48M

x 1

[1]

Block Diagram

Pin Configuration

VDD_REF

SSOP-48

XTAL

OSC

REF

PLL Ref Freq

VDD_CPU_CS (2.5V)

*FS4/REF

VDD_REF

GND_REF

VDD_48MHz

*FS3/48MHz

VDD_APIC

GND_APIC

APIC0

APIC1

GND_CPU

VDD_CPU_CS(2.5V)

CPUT_CS_F

CPUC_CS_F

CPUT_0

CPUC_0

VDD_CPU(3.3V)

IREF

GND_CPU

CPUT_1

CPUC_1

VTT_PWRGD#

CPU_STOP#*

PCI_STOP#*

RST#

SDATA

SCLK

AGP2

AGP1

GND_AGP

Divider

CPUT_CS, CPUC_CS

VDD_CPU (3.3V)

CPUT_0,1, CPUC_0,1

PLL 1

Stop

Clock

Control

Network

*(FS0:4)

VTT_PWRGD#

*CPU_STOP#

*MULTSEL1

VDD_APIC

APIC0:1

*FS2/24_48MHz

GND_48MHz

*FS0/PCI_F

*FS1/PCI1

*MULT_SEL1/PCI2

GND_PCI

PCI3

VDD_AGP

AGP0:2

VDD_PCI

PCI_F

PCI4

PD#

Stop

Clock

Control

PCI1:8

VDD_PCI

PCI5

PCI6

*PCI_STOP#

PCI7

GND_PCI

PCI8

*PD#

AGP0

VDD_AGP

VDD_48MHz

48MHz

PLL2

24_48MHz

RST#

SDATA

SCLK

SMBus

Logic

Note:

1. Pins marked with [*] have internal pull-up resistors. Pins marked with[^] have internal pull-down resistors.

Rev 1.0, November 21, 2006

Page 1 of 18

2200 Laurelwood Road, Santa Clara, CA 95054

Tel:(408) 855-0555 Fax:(408) 855-0550

www.SpectraLinear.com

12 3 4 5 6 7...18

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