W147G - Frequency Generator for Integrated Core Logic - Cypress 数据手册 ( 数据表 )

Overview
The W147G is a highly integrated frequency timing generator, supplying all the required clock sources for an Intel® architecLButtonture platform using graphics integrated core logic.

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
• Three copies of CPU clock at 66/100 MHz
• Nine copies of 100-MHz SDRAM clocks
• Eight copies of PCI clock
• Two copies of synchronous APIC clock
• Two copies of 48-MHz clock (non-spread spectrum) optimized for USB reference input and video dot clock
• Two copies of 66-MHz fixed clock
• One copy of 14.31818-MHz reference clock
• Power-down control
• I2C interface for turning off unused clocks