W83194BR-SD中文資料華邦電子數(shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

The W83194BR-SD is a Clock Synthesizer for Intel P4 Springdale series chipset. W83194BR-SD provides all clocks required for high-speed microprocessor and provides step-less frequency programming and 32 different frequencies of CPU, SRC, PCI, and 3V66 clocks setting. All clocks are externally selectable with smooth transitions.

FEATURES

? 2 pairs current mode differential clock for CPU and Chipset

? 1 pairs current mode differential clock for SRC

? 3 3V66 clock outputs

? 1 3V66/VCH clock output default 66MHz

? 9 PCI synchronous clocks, 3 free running

? 2 48MHz clock outputs for USB and DOT

? 1 24_48MHz for I/O chip, default 48MHz

? 3 REF 14.318MHz clock outputs

? SRC/AGP/PCI clock out supports synchronous and asynchronous mode

? 3V66 leads PCICLK from 1.5ns to 3.5ns

? I2C 2-Wire serial interface supports block and byte mode read/write

? Step-less frequency programming

? Smooth frequency switch with selections from 100 to 400MHz

? Programmable clock outputs Slew rate control and Skew control

? +/- 0.25 center type spread spectrum in table mode

? Programmable S.S.T. scale to reduce EMI

? Programmable registers to enable/stop each output and select modes

? Watch Dog Timer and RESET# output pins

? 48-pin SSOP package