W311HT Datasheet

IC型號(hào)：
W311HT
PDF描述：
FTG for VIA⑩ Pro-266 DDR Chipset
文件大?。?/label>
372.37KB
PDF頁數(shù)：
19頁
芯片廠家：
CYPRESS

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W311

FTG for VIA鈩?Pro-266 DDR Chipset

Features

鈥?Maximized EMI Suppression using Cypress鈥檚 Spread

Spectrum Technology

鈥?System frequency synthesizer for VIA Pro-2000

鈥?Programmable clock output frequency with less than 1

MHz increment

鈥?Integrated fail-safe Watchdog Timer for system

recovery

鈥?Automatically switch to HW selected or SW

programmed clock frequency when Watchdog Timer

time-out

鈥?Capable of generate system RESET after a Watchdog

Timer time-out occurs or a change in output frequency

via SMBus interface

鈥?Support SMBus byte read/write and block read/ write

operations to simplify system BIOS development

鈥?Vendor ID and Revision ID support

鈥?Programmable drive strength for CPU and PCI output

clocks

鈥?Programmable output skew between CPU, AGP and PCI

鈥?Supports Intel

廬

Celeron

廬

and Pentium

廬

III class

processor

鈥?Three copies of CPU output

鈥?Nine copies of PCI output

鈥?One 48-MHz output for USB

鈥?One 24-MHz or 48-MHz output for SIO

鈥?Two buffered reference outputs

鈥?Three copies of APIC output

鈥?Supports frequencies up to 200MHz

鈥?SMBus Interface for programming

鈥?Power management control inputs

鈥?Available in 48-pin SSOP

Key Specifications

CPU Cycle-to-cycle Jitter: .......................................... 250 ps

CPU to CPU Output Skew........................................... 175 ps

PCI Cycle-to-cycle Jitter: ............................................. 500 ps

PCI to PCI Output Skew:............................................. 500 ps

Block Diagram

Pin Configuration

[1]

Note:

1. Signals marked with * have internal pull-up resistors

Cypress Semiconductor Corporation

Document #: 38-07703 Rev. **

鈥?/div>

3901 North First Street

鈥?/div>

San Jose

CA 95134

鈥?/div>

408-943-2600

Revised March 14, 2005

型號(hào)

版本

描述

廠商

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W311HT Datasheet

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