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ICS2694 - Motherboard Clock Generator

Description

The ICS2694 Motherboard Clock Generator is an integrated circuit using PLL and VCO technology to generate virtually all the clock signals required in a PC.

Features

  • Low cost - eliminates multiple oscillators and Count Down Logic Primary VCO has 16 Mask Programmable frequencies (normally CPU clock) Secondary VCO has 1 Mask Programmable frequency (usually 96 MHz) Pre-programmed versions for typical PC.

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Datasheet preview – ICS2694

Datasheet Details

Part number ICS2694
Manufacturer Integrated Circuit Systems
File Size 254.89 KB
Description Motherboard Clock Generator
Datasheet download datasheet ICS2694 Datasheet
Additional preview pages of the ICS2694 datasheet.

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Full PDF Text Transcription

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Integrated Circuit Systems, Inc. ICS2694 Motherboard Clock Generator Description The ICS2694 Motherboard Clock Generator is an integrated circuit using PLL and VCO technology to generate virtually all the clock signals required in a PC. The use of the device can be generalized to satisfy the timing needs of most digital systems by reprogramming the VCO or reconfiguring the counter stages which derive the output frequencies from the VCO’s. The primary VCO is customarily used to generate the CPU clock and is so labeled on the ICS2694. Pre-programmed frequency sets are listed on page 6. These choices were made to match the major microprocessor families. CPUSEL (0-3) allow the user to select the appropriate frequency for the application.
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