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ICS9250-16

Integrated Circuit Systems
Part Number ICS9250-16
Manufacturer Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Published Dec 11, 2005
Detailed Description Integrated Circuit Systems, Inc. ICS9250-16 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommende...
Datasheet PDF File ICS9250-16 PDF File

ICS9250-16
ICS9250-16

Overview
Integrated Circuit Systems, Inc.
ICS9250-16 Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommended Application: 810/810E type chipset.
Output Features: • 3 CPU (2.
5V) 66.
6/133.
3MHz (up to 150MHz achievable through I2C) • 9 SDRAM (3.
3V) @ 133.
3MHz (up to 150MHz achievable through I2C) • 8 PCI (3.
3 V) @33.
3MHz • 2 IOAPIC (2.
5V) @ 33.
3MHz • 2 Hublink clocks (3.
3 V) @ 66.
6MHz • 2 USB (3.
3V) @ 48MHz ( Non spread spectrum) • 1 REF (3.
3V) @ 14.
318MHz Features: • Supports spread spectrum modulation, down spread 0 to -0.
5% and ± 0.
25% center spread.
• I2C support for power management • Efficient power management scheme through PD# • Uses external 14.
138MHz crystal • Alternate frequency selections available through I2C control.
Pin Configuration *FS2//REF0 VDD0 X1 X2 GND0 GND1 3V66-0 3V66-1 VDD1 VDD2 PCICLK0 PCICLK1 PCICLK2 GND2 PCICLK3 PCICLK4 GND2 PCICLK5 PCICLK6 PCICLK7 VDD2 VDD3 GND3 GND4 48MHz_0 48MHz_1 VDD4 FS0 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 GNDL1 IOAPIC0 IOAPIC1 VDDL1 CPUCLK0 VDDL0 CPUCLK1 CPUCLK2 GNDL0 GND5 SDRAM0 SDRAM1 VDD5 SDRAM2 SDRAM3 GND5 SDRAM4 SDRAM5 VDD5 SDRAM6 SDRAM7 GND5 SDRAM_F VDD5 PD# SCLK SDATA FS1 56-Pin 300mil SSOP * This input has a 50KW pull-down to GND.
Block Diagram X1 X2 XTAL OSC PLL1 Spread Spectrum /2 /3 3 REF0 Functionality VDDL CPU66/100/133 [2:0] 3V66 [1:0] SDRAM [7:0] SDRAM_F PCICLK [7:0] IOAPIC [1:0] VDDL 48MHz [1:0] FS2 X X 0 0 1 1 FS1 0 0 1 1 1 1 FS0 0 1 0 1 1 0 ICS9250-16 Function Tristate Test Active CPU = 66MHz SDRAM = 100MHz Active CPU = 100MHz SDRAM = 100MHz Active CPU = 133MHz SDRAM = 100MHz (Special Condition) Active CPU = 133MHz SDRAM = 133MHz FS(2:0) PD# Control Logic 2 8 SDATA SCLK Config Reg /2 /2 PLL2 1 8 2 2 9250-16 Rev H 9/5/00 Third party brands and names are the property of their respective owners.
ICS reserves the right to make changes in the device data...


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