W48C111-16

PRELIMINARY W48C111-16 Frequency Generator for Integrated Core Logic Features Maximized EMI suppression using Cypress’s Spread Spectrum technology Power-on default to spread mode Two copies of CPU output Six copies of PCI output (synchronous w/CPU outputs) One copy of 48-MHz USB output One Buffered copy of 14.318-MHz input reference signal Supports 100-MHz or 66-MHz CPU operation Power management control input pins Low Frequency Test Mode Available in 28-pin SSOP (209 mil) Key Specifications Supply Voltages: ....................................... VDDQ3 = 3.3V±5% VDDQ2 = 2.5V±5% Block Diagram VDDQ3 REF X1 XTAL X2 OSC PLL Ref Freq CPU_STOP# SEL100/66# PLL 1 Stop Clock Control ÷2/÷3 PCI_STOP# Stop Clock Control PWR_DWN# Power Down Control PLL 2 VDDQ2 CPU0 CPU1 VDDQ3 PCI_F PCI1 PCI2 PCI3 VDDQ3 PCI4 PCI5 VDDQ3 48MHz CPU0:1 Skew: ............................................................ 175 ps CPU0:1 Cycle to Cycle Jitter: ..........