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ICS9248-114

Integrated Circuit Systems
Part Number ICS9248-114
Manufacturer Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Published Oct 7, 2005
Detailed Description Integrated Circuit Systems, Inc. ICS9248-114 AMD - K7™ System Clock Chip Recommended Application: VIA K7 style chipset...
Datasheet PDF File ICS9248-114 PDF File

ICS9248-114
ICS9248-114

Overview
Integrated Circuit Systems, Inc.
ICS9248-114 AMD - K7™ System Clock Chip Recommended Application: VIA K7 style chipset Output Features: • 1 - Differential pair open drain CPU clocks • 1 - Single-ended open drain CPU clock • 13 - SDRAM @ 3.
3V • 6 - PCI @3.
3V, • 1 - 48MHz, @3.
3V fixed.
• 1 - 24/48MHz @ 3.
3V • 2 - REF @3.
3V, 14.
318MHz.
Features: • Up to 155MHz frequency support • Support power management: CPU stop and Power down Mode from I2C programming.
• Spread spectrum for EMI control (0 to -0.
5% down spread, ± 0.
25% center spread).
• Uses external 14.
318MHz crystal Skew Specifications: • CPUT – CPUC: <200ps • PCI – PCI: <500ps • CPU – PCI: <500ps Pin Configuration VDD1 REF0/CPU_STOP#* GND X1 X2 VDD2 *MODE/PCICLK_F *FS3/PCICLK0 GND *SEL24_48#/PCICLK1 PCICLK2 PCICLK3 PCICLK4 VDD2 BUFFER IN GND SDRAM11 SDRAM10 VDD3 SDRAM9 SDRAM8 GND 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 37 36 35 34 33 32 31 30 29 28 27 26 25 REF1/FS2* GND CPUCLKT1 GND CPUCLKC0 CPUCLKT0 VDDL PD#* SDRAM_OUT GND SDRAM0 SDRAM1 VDD3 SDRAM2 SDRAM3 GND SDRAM4 SDRAM5 VDD3 SDRAM6 SDRAM7 VDD4 48MHz/FS0* 24/48MHz/FS1* 48-Pin 300mil SSOP * Internal Pull-up Resistor of 120K to VDD Block Diagram PLL2 /2 X1 X2 XTAL OSC PLL1 Spread Spectrum 48MHz 24_48MHz 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) 124.
00 75.
00 83.
30 66.
80 103.
00 112.
00 133.
30 100.
00 120.
00 115.
00 110.
00 105.
00 140.
00 150.
00 124.
00 133.
30 PCICLK (MHz) 41.
33 37.
50 41.
65 33.
40 34.
33 37.
33 44.
43 33.
33 40.
00 38.
33 36.
67 35.
00 35.
00 37.
50 31.
00 33.
33 REF (1:0) CPU DIVDER Stop CPUCLKC0 CPUCLKT (1:0) SEL24_48# SDATA SCLK FS (3:0) PD# CPU_STOP# BUFFER IN Control Logic Config.
Reg.
PCI DIVDER PCICLK (4:0) PCICLK_F SDRAM DRIVER SDRAM (11:0) SDRAM_OUT 9248-114 Rev C 01/24/01 Third party brands and names are the property of their respective owners.
ICS r...


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