DatasheetsPDF.com

ICS9250-18

Integrated Circuit Systems
Part Number ICS9250-18
Manufacturer Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Published Dec 11, 2005
Detailed Description Integrated Circuit Systems, Inc. ICS9250-18 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommende...
Datasheet PDF File ICS9250-18 PDF File

ICS9250-18
ICS9250-18

Overview
Integrated Circuit Systems, Inc.
ICS9250-18 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommended Application: BX, Appollo Pro 133 type of chip set.
Output Features: • 3 - CPUs @2.
5V, up to 166MHz.
• 17 - SDRAM @ 3.
3V, up to 166MHz.
• 7 - PCI @3.
3V • 2 - IOAPIC @ 2.
5V • 1 - 48MHz, @3.
3V fixed.
• 1 - 24MHz @ 3.
3V • 2 - REF @3.
3V, 14.
318MHz.
Features: • Up to 166MHz frequency support • Support power management: CPU, PCI, stop and Power down Mode form I2C programming.
• Spread spectrum for EMI control (± 0.
25% center spread) • Uses external 14.
318MHz crystal Key Specifications: • CPU – CPU: <175ps • CPU – PCI: 1 - 4ns • PCI – PCI: <500ps • SDRAM - SDRAM: <250ps Pin Configuration VDDREF *FS2/REF1 *PCI_STOP#/REF0 GND X1 X2 VDDPCI *MODE/PCICLK_F *FS3/PCICLK0 GND PCICLK1 PCICLK2 PCICLK3 PCICLK4 VDDPCI PCICLK5 BUFFERIN SDRAM11 SDRAM10 VDDSDR SDRAM9 SDRAM8 GND SDRAM15 SDRAM14 GND SDATA 2 I C 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 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 VDDLIOAPIC IOAPIC0 IOAPIC_F GND CPUCLK_F CPUCLK1 VDDLCPU CPUCLK2 GND CPU_STOP# SDRAM_F VDDSDR SDRAM0 SDRAM1 GND SDRAM2 SDRAM3 SDRAM4 SDRAM5 VDDSDR SDRAM6 SDRAM7 GND SDRAM12 SDRAM13 VDD48 24MHz/FS0* 1 48MHz/FSI* { 56-Pin SSOP Block Diagram * Internal Pull-up Resistor of 240K to 3.
3V on indicated inputs ** Internal Pull-down resistor of 240K to GND on indicated inputs.
1.
This output is double strength.
Functionality FS3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 FS2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 FS1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 FS0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 CPU (MHz) 80.
00 75.
00 83.
31 66.
9 103.
00 112.
01 68.
01 100.
7 120.
00 114.
99 109.
99 105.
00 140.
00 150.
00 124.
00 133.
9 PCICLK (MHz) 40.
00 37.
50 41.
65 33.
45 34.
33 37.
34 34.
01 33.
57 40.
00 38.
33 36.
66 35.
00 35.
00 37.
50 31.
00 33.
25 9250-18 Rev B 9/23/99 Third party brands and names are the property of their respective owners.
ICS reserves the right to ma...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)