Features
• Maximized EMI suppression using Cypress’s Spread Spectrum technology
• ±0.5% Spread Spectrum clocking
• Equivalent to the W48S67-72 with Spread Spectrum for Tilamook, MMO, and Deschutes processors
• Generates system clocks for CPU, IOAPIC, SDRAM, PCI, USB plus 14.318-MHz (REF0:1)
• Serial data interface (SDATA, SCLOCK inputs) provides additional CPU/PCI clock frequency selections, individual output clock disabling and other functions
• MODE input pin selects optional power management input control pins (reconfigures pins 26 and 27)
• Two fixed outputs separately selectable as 24-MHz or 48-MHz (default = 48-MHz)
• VDDQ3 = 3.3V±5%, VDDQ2 = 2.5V±5%
• Uses external 14.318-MHz crystal
• Available in 48-pin SSOP (300 mils)
• 10Ω CPU output impedance