ICS94235YFT中文資料華潤微電子數(shù)據(jù)手冊PDF規(guī)格書

General Description

The ICS94235 is a main clock synthesizer chip for AMD-K7 based systems with ALI 1647 style chipsets. This provides all clocks required for such a system.

Features:

? Programmable ouput frequency

? Programmable ouput rise/fall time

? Programmable CPU, SDRAM, PCI and AGP skew

? Real time system reset output

? Spread spectrum for EMI control typically by 7dB to 8dB, with programmable spread percentage

? Watchdog timer technology to reset system if over-clocking causes malfunction

? Uses external 14.318MHz crystal

Output Features:

? 1 - Differential pair open drain CPU clocks

? 1 - Single-ended open drain CPU clock

? 13 - SDRAM @ 3.3V

? 7 - PCI @ 3.3V

? 2 - AGP @ 3.3V

? 1 - 48MHz, @3.3V

? 1 - REF @ 3.3V, (selectable strength) through I2C