W130

PRELIMINARY W130 Spread Spectrum Desktop/Notebook System Clock Features Maximized EMI suppression using Cypress’s Spread Spectrum technology Six copies of CPU Clock Eight copies of PCI Clock (synchronous w/CPU clock) Two copies of 14.318-MHz IOAPIC Clock Two copies of 48-MHz USB Clock Three buffered copies of 14.318-MHz reference input Input is a 14.318-MHz XTAL or reference signal Selectable 100-MHz or 66-MHz CPU Clocks Power management control input pins Test mode and output three-state capability CPU0:5 Clock Skew: ...................................................175 ps PCI_F, PCI1:7 Clock Skew: ......................................... 500 ps CPU to PCI Clock Skew: .............. 1.5 to 4.0 ns (CPU Leads) Logic inputs have 250-kΩ pull-up resistors except SEL100/66#. Table 1. Pin Selectable Frequency SEL 100/66# 0 0 0 0 1 1 Supply Voltages: ....................................... VDDQ3 = 3.3V±5% VDDQ2 = 2.5V±5% CPU Clock Jitter: ........................................................ 200 ps 1 1 SEL1 0 0 1 1 0 0 1 1 SEL0 0 1 0 1 0 1 0 1 CPU HI-Z 66.6 66.6 66.6 X1/2 100 100 100 PCI HI-Z 33.3 33.3 33.3 X1/6 33.3 33.3 33.3 SPREAD#=0 Don’t Care ±0.9% Center –1% Down –0.5% Down Don’t Care ±0.9% Center –1% Down –0.5% Down Key Specifications Block Diagram VDDQ3 REF0 X1 X2 XTAL OSC PLL Ref Freq VDDQ2 APIC0 APIC1 VDDQ2 CPU_STOP# Stop Clock Control 100/66#_SEL SEL0 SEL1 SPREAD# PLL 1 ÷2/÷3 CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 VDDQ3 PCI_F Stop Clock Control PCI_STO...