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ICS9248-110

Integrated Circuit Systems
Part Number ICS9248-110
Manufacturer Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Published Oct 7, 2005
Detailed Description Integrated Circuit Systems, Inc. ICS9248-110 AMD-K7TM System Clock Chip Recommended Application: AMD-K7 based systems ...
Datasheet PDF File ICS9248-110 PDF File

ICS9248-110
ICS9248-110

Overview
Integrated Circuit Systems, Inc.
ICS9248-110 AMD-K7TM System Clock Chip Recommended Application: AMD-K7 based systems Output Features: • 3 differential pair open drain CPU clocks (2.
7V external pull-up; up to 150MHz achieviable through I2C) • 2 - AGPCLK @ 3.
3V • 8 - PCI @3.
3V, including 1 free running • 1 - 48MHz @ 3.
3V • 1 - 24/48MHz @ 3.
3V • 2- REF @3.
3V, 14.
318MHz.
Features: • Up to 150MHz frequency support • Support power management: CPU, PCI, stop and Power down Mode from I2C programming.
• Spread spectrum for EMI control -0.
5% down spread • Uses external 14.
318MHz crystal • FS pins for frequency select Key Specifications: • CPU – CPU: <250ps • AGP-AGP: <250ps • PCI – PCI: <400ps • CPU - SDRAM_OUT: <400ps • CPU-AGP <250ps Pin Configuration **FS0/REF0 **FS1/REF1 GNDREF X1 X2 GNDPCI PCICLK_F PCICLK0 VDDPCI PCICLK1 PCICLK2 GNDPCI PCICLK3 PCICLK4 VDDPCI PCICLK5 PCICLK6 VDDAGP AGP0 AGP1 GNDAGP VDD48 48MHz SEL24_48#/24-48MHz 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 VDDREF GNDSD SDRAM_OUT VDDSD RESERVED CPUCLKC2 CPUCLKT2 GNDCPU CUCLKC1 CPUCLKT1 GND CPUCLKC0 CPUCLKT0 RESERVED VDD GND PCI_STOP# CPU_STOP PD# SPREAD# FS2* SDATA SCLK GND48 48-Pin 300mil SSOP * Internal 120K pullup resistor on indicated inputs ** Internal 240K pullup resistor on indicated inputs Block Diagram X1 X2 OSC REF (1:0) CPU_STOP# Functionality FS (2:0) SPREAD# PLL CPU STOP CPUCLKT (2:0) CPUCLKC (2:0) SDRAM_OUT FS2 0 0 0 0 1 1 1 1 FS1 0 0 1 1 0 0 1 1 FS0 0 1 0 1 0 1 0 1 /2 PD# /3 X2 PCI STOP AGP (1:0) PCICLK (6:0) PCI_STOP# PCICLK_F PLL2 /2 SEL24_48# 48MHz 24_48MHz CPU, SDRAM 90 95 100.
99 115 100.
7 103 105 110 ICS9248-110 PCI 30.
00 31.
67 33.
66 38.
33 33.
57 34.
33 35.
00 36.
67 AGP 60.
00 63.
33 67.
33 76.
67 67.
13 68.
67 70.
00 73.
33 9248-110 Rev C 01/08/01 Third party brands and names are the property of their respective owners.
ICS reserves the right to make changes in the device data id...


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