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W311 参数 Datasheet PDF下载

W311图片预览
型号: W311
PDF下载: 下载PDF文件 查看货源
内容描述: FTG的VIA ™PRO -266 DDR芯片组 [FTG for VIA⑩ Pro-266 DDR Chipset]
分类和应用: 双倍数据速率
文件页数/大小: 18 页 / 250 K
品牌: SPECTRALINEAR [ SPECTRALINEAR INC ]
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W311
FTG for VIA™ Pro-266 DDR Chipset
Features
• Maximized EMI Suppression using Cypress’s Spread
Spectrum Technology
• System frequency synthesizer for VIA Pro-2000
• Programmable clock output frequency with less than 1
MHz increment
• Integrated fail-safe Watchdog Timer for system
recovery
• Automatically switch to HW selected or SW
programmed clock frequency when Watchdog Timer
time-out
• Capable of generate system RESET after a Watchdog
Timer time-out occurs or a change in output frequency
via SMBus interface
• Support SMBus byte read/write and block read/ write
operations to simplify system BIOS development
• Vendor ID and Revision ID support
• Programmable drive strength for CPU and PCI output
clocks
• Programmable output skew between CPU, AGP and PCI
• Supports Intel
®
Celeron
®
and Pentium
®
III class
processor
• Three copies of CPU output
• Nine copies of PCI output
• One 48 MHz output for USB
• One 24 MHz or 48 MHz output for SIO
• Two buffered reference outputs
• Three copies of APIC output
• Supports frequencies up to 200MHz
• SMBus Interface for programming
• Power management control inputs
• 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
Rev 1.0, November 25, 2006
2200 Laurelwood Road, Santa Clara, CA 95054
Tel:(408) 855-0555
Fax:(408) 855-0550
Page 1 of 18
www.SpectraLinear.com