W83194BG-703集成電路（IC）的應用特定時鐘/定時規(guī)格書PDF中文資料

GENERAL DESCRIPTION

The W83194BR-703 is a Clock Synthesizer for SIS 741 chipset with 964 South Bridge. W83194BR- 703 provides all clocks required for high-speed microprocessor and provides step-less frequency programming and 32 different frequencies of CPU, PCI, and AGP clocks setting, support two ZCLK clock and one pair current mode differential SRC clock outputs; all clocks are externally selectable with smooth transitions.

PRODUCT FEATURES

? 1 3.3V open drain Differential pairs clock outputs for CPU

? 1 3.3V open drain singled-ended clock output for chipset host bus.

? 1 pair 3.3V current mode differential SRC clock.

? 2 3.3V ZCLK clock outputs

? 2 AGP clock outputs

? 8 PCI synchronous clocks

? 2 2.5V IOAPIC clock outputs

? 1 24_48Mhz clock output for super I/O.

? 1 12_48 MHz clock output for USB.

? 3 14.318MHz REF clock outputs.

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

? Smooth frequency switch with selections from 100 to 218MHz

? Step-less frequency programming

? I2C 2-Wire serial interface and support byte read/write and block read/write.

? -0.5 and +/- 0.25 center type spread spectrum

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

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

? Programmable clock outputs Skew control

? 48-pin SSOP package