ICS94211AF IDT, Integrated Device Technology Inc, ICS94211AF Datasheet
ICS94211AF
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ICS94211AF Summary of contents
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Integrated Circuit Systems, Inc. Programmable System Frequency Generator for PII/III™ Recommended Application: 440BX/VIA Apollo Pro133/ ALI 1631 style chipset. Output Features: • CPUs @2.5V • IOAPIC @ 2.5V • SDRAM @ 3.3V • 6 ...
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ICS94211 General Description The ICS94211 is a single chip clock solution for desktop designs using the BX/Apollo Pro133/ALI 1631 style chipset. It provides all necessary clock signals for such a system. The ICS94211 belongs to ICS new generation of programmable ...
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General I C serial interface information for the ICS94211 How to Write: • Controller (host) sends a start bit. • Controller (host) sends the write address D2 • ICS clock will acknowledge • Controller (host) sends a dummy command ...
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ICS94211 Brief I Programmable System Frequency Generator Register Name Functionality & Frequency Select Register Output Control Registers Vendor ID & Revision ID Registers Byte Count Read Back Register Watchdog Timer Count Register Watchdog Control Registers VCO Control Selection Bit VCO ...
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Byte 0: Functionality and frequency select register (Default= ...
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ICS94211 Byte 1: CPU, Active/Inactive Register (1= enable disable ...
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Byte 7: Vendor ID and Revision ID Register ...
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ICS94211 Byte 13: Spread Sectrum Control Register ...
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Byte 19: Reserved Register ...
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ICS94211 Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 V Logic Inputs . . . . . ...
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Electrical Characteristics - CPU 70°C;VDD = 3.3V DDL PARAMETER SYMBOL 1 Output Impedance R DSP2B 1 Output Impedance R DSN2B Output High Voltage V OH2B Output Low Voltage V OL2B Output High Current I ...
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ICS94211 Electrical Characteristics - IOAPIC 70°C; VDD = 3.3V DDL PARAMETER SYMBOL 1 Output Impedance R DSP4B 1 Output Impedance R DSN4B Output High Voltage V OH4B Output Low Voltage V OL4B Output High ...
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Electrical Characteristics - REF, 24_48MHz, 48MHz 70° 3.3 V +/-5 PARAMETER SYMBOL 1 Output Impedance R DSP5 1 Output Impedance R DSN5 Output High Voltage V OH5 Output Low Voltage V ...
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ICS94211 Shared Pin Operation - Input/Output Pins The I/O pins designated by (input/output) on the ICS94211 serve as dual signal functions to the device. During initial power-up, they act as input pins. The logic level (voltage) that is present on ...
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PCI_STOP# Timing Diagram PCI_STOP asynchronous input to the ICS94211 used to turn off the PCICLK clocks for low power operation. PCI_STOP# is synchronized by the ICS94211 internally. The minimum that the PCICLK clocks are enabled (PCI_STOP# ...
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ICS94211 INDEX INDEX AREA AREA 45° 45° .10 (.004) C .10 (.004) C Ordering Information ICS94211yFLF-T Example: ICS XXXX ...
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Revision History Rev. Issue Date Description F 8/24/2005 Added LF Ordering Information. 0441F—08/24/05 17 ICS94211 Page # 16 ...