ICS94209
Features
:
- 3
- CPU @ 2.5V
- 13
- SDRAM @ 3.3V
- 6- PCI @3.3V,
- 2
- AGP @ 3.3V
- 1- 48MHz, @3.3V fixed.
- 1- 24/48MHz, @3.3V selectable by I2C (Default is 24MHz)
- 2- REF @3.3V, 14.318MHz. Features
:
- Programmable ouput frequency.
- Programmable ouput rise/fall time.
- Programmable SDRAM and CPU skew.
- 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.
- FS pins for frequency select Skew Specifications:
- CPU
- CPU: < 175ps
- SDRAM
- SDRAM < 250ps (except SDRAM12)
- PCI
- PCI: < 500ps
- CPU (early)
- PCI: 1-4ns (typ. 2ns)
Pin Configuration
VDDA
- (AGPSEL)REF0 1
- (FS3)REF1 GND X1 X2 VDDPCI
- (FS1)PCICLK_F
- (FS2)PCICLK0 PCICLK1 PCICLK2 PCICLK3 PCICLK4 GND VDDAGP AGPCLK0 AGPCLK1 GND GND
- (FS0)48MHz
- (MODE)24_48MHz VDD48 SDATA SCLK
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38...
