ICS950104
ICS950104 is Programmable System Clock Chip for PIII Processor manufactured by Integrated Circuit Systems.
Features
:
- 1
- CPU clocks @ 2.5V
- 1
- Pair of differential CPU clocks @ 3.3V
- 9
- SDRAM @ 3.3V
- 7
- PCI @3.3V
- 1
- 48MHz, @3.3V
- 1
- 24/48MHz @ 3.3V
- 3
- REF @3.3V, (selectable strength) through I2C Features
:
- Programmable ouput frequency
- Programmable ouput rise/fall time
- Programmable CPU, SDRAM, and PCI skew
- Real time system reset output
- Spread spectrum for EMI control typically by 7d B to 8d B, with programmable spread percentage
- Watchdog timer technology to reset system if over-clocking causes malfunction
- Uses external 14.318MHz crystal Skew Specifications:
- CPU
- CPU: <250ps
- PCI
- PCI: <500ps
- SDRAM
- SDRAM: <250ps
- CPU
- SDRAM:<350ps
- CPU
- PCI: <3ns
Pin Configuration
CPUCLKC0 CPUCLKT0 VDDCPU GND AVDD X1 X2
- - FS0/REF0 VDDREF
- - FS1/REF1 REF2 GND
- FS2/PCICLK_F PCICLK0 PCICLK1 PCICLK2 GND VDDPCI PCICLK3 PCICLK4 PCICLK5 AVDD48
- - MULTSEL/24_48MHz...
