器件名称: W209C
功能描述: Frequency Generator for Integrated Core Logic with 133-MHz FSB
文件大小: 172.19KB 共16页
简 介:PRELIMINARY
W209C
Frequency Generator for Integrated Core Logic with 133-MHz FSB
Features
Maximized EMI suppression using Cypress’s Spread Spectrum technology Low jitter and tightly controlled clock skew Highly integrated device providing clocks required for CPU, core logic, and SDRAM Two copies of CPU clock Nine copies of SDRAM clock Eight copies of PCI clock One copy of synchronous APIC clock Two copies of 66-MHz outputs Two copies of 48-MHz outputs One copy of selectable 24- or 48-MHz clock One copy of double strength 14.31818-MHz reference clock Power-down control SMBus interface for turning off unused clocks Table 1. Frequency Selections
FS4 FS3 FS2 FS1 FS0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 CPU 75.3 95.0 129.0 150.0 150.0 110.0 140.0 144.0 68.3 105.0 138.0 140.0 66.8 100.2 133.6 133.6 157.3 160.0 146.6 122.0 127.0 122.0 117.0 114.0 80.0 78.0 166.0 160.0 66.6 100.0 133.3 133.3 SDRAM 3V66 113.0 95.0 129.0 113.0 150.0 110.0 140.0 108.0 102.5 105.0 138.0 105.0 100.2 100.2 133.6 100.2 118.0 120.0 110.0 91.5 127.0 122.0 117.0 114.0 120.0 117.0 166.0 160.0 100.0 100.0 133.3 100.0 75.3 63.3 86.0 75.3 73.0 93.3 72.0 68.3 70.0 92.0 70.0 66.8 66.8 89.1 66.8 78.6 80.0 73.3 61.0 84.6 81.3……
