GENERAL DESCRIPTION
The W83196S-14 is a Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor. Twelve different frequency of CPU, and PCI clocks are externally selectable with smooth transitions.
FEATURES
• Supports PentiumÔ II CPUs with I2C
• 12 sets of CPU frequencies selection
• 2 CPU clocks (one free running CPU clock)
• 7 PCI synchronous clocks(one free running PCI clock)
• Optional single or mixed supply:
(VDDR = VDDCore = VDDP = VDD4 = 3.3V ±5%)
(VDDA = VDDC = 2.5V ±5%)
• Skew form CPU to PCI clock 1.5 to 4.0 nS, CPU leads.
• CPU clock jitter less than 200 pS
• PCI_F, PCI1: 6 clock skew less than 500 pS
• Smooth frequency switch with selections from 66.8 MHz to 150 MHz CPU
• I2C 2-Wire serial interface and I2C read back
• ±0.5% center type spread spectrum function to reduce EMI
• Programmable registers to enable/stop each output and select modes
(mode as Tri-state or Normal )
• MODE pin for power management
• 48 MHz for USB
• 24 MHz for super I/O
• Packaged in 28-pin SOP