SG556

APPROVED PRODUCT SG556 Mobile Pentium® Processor Application Clock Generator with SSCG, USB and Power Management Support Product Features n Supports clock requirements for Mobile Pentium® Processor n 2 Host and 5 PCI clocks n Separate supply pins for mixed (3.3/2.5V) voltage application. n <175ps skew among CPU clocks. n < 250ps skew among PCI clocks. n 48mhz for USB. n 28-pin SSOP package for minimum board space. n Power management capabilities Frequency Table SEL100/66# CPU PCI 0 66.4 Mhz* 33.3 Mhz 1 99.8 Mhz** 33.2 MHz *Down Spread 1.25% (total); **Down Spread .5% (total) Block Diagram XIN XOUT OSC CPU_STOP# PCI_STOP# SEL1066# PWR_DWN# PLL PLL VDDR REF VDDC CPUCLK (0:1) VDDP PCI (1:5) PCI_F 48 MHz Pin Configuration XIN XOUT VSS PCI_F PCI1 VDDP PCI2 PCI3 VDDP PCI4 PCI5 VSS VDD VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 VSS 27 VDDR 26 REF 25 VDDC 24 CPU0 23 CPU1 22 VSS 21 VDD 20 VSS 19 PCI_STOP# 18 CPU_STOP# 17 PWR_DWN# 16 48M 15 SEL100/66# Cypress Semiconduct...