W83196S-14中文資料華邦電子數(shù)據(jù)手冊PDF規(guī)格書

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 Pentium? 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