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MK1491-06 - CS5530 Geode Clock Source

General Description

The MK1491-06 is a low cost, low jitter, high performance clock synthesizer for National Semiconductor CS5530 based computer and portable appliance applications.

Using patented analog Phase-Locked Loop (PLL) techniques, the device accepts a 14.318 MHz crystal input to produce multiple output clocks.

Key Features

  • Packaged in 28 pin, 300 mil wide SOIC or in 28 pin, 150 mil wide SSOP.
  • Provides all critical timing for the National Semiconductor CS5530 Geode companion chip.
  • Four PCI clocks.
  • Selectable PCIF on up to 2 outputs.
  • Early PCI clock selectability.
  • Up to 4 Reference clocks.
  • 48 MHz USB and 24MHz SIO support.
  • AC97 audio clock.
  • Multiple power down modes.
  • Low EMI Enable pin reduces EMI radiation on PCI clocks (pate.

📥 Download Datasheet

Datasheet Details

Part number MK1491-06
Manufacturer Integrated Circuit Systems
File Size 88.91 KB
Description CS5530 Geode Clock Source
Datasheet download datasheet MK1491-06 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CS5530 Geode ™ Description The MK1491-06 is a low cost, low jitter, high performance clock synthesizer for National Semiconductor CS5530 based computer and portable appliance applications. Using patented analog Phase-Locked Loop (PLL) techniques, the device accepts a 14.318 MHz crystal input to produce multiple output clocks. It provides selectable PCI local bus and AC97 audio clocks, 24 MHz and 48 MHz clocks for Super I/O and USB, as well as multiple Reference outputs. The device has multiple power down modes to reduce power consumption.