Overview
Description
The MK1491-09 is a low cost, low jitter, high performance clock synthesizer for AMD's Geode™ GX2 processor for information 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 clocks, 48 MHz clocks for Super I/O and USB, as well as multiple Reference outputs. The device has a power down mode to reduce power consumption.
Features
- Packaged in 28-pin (209 mil) SSOP
- Available in Pb (lead) free annealed package
- Provides all critical timing for the AMD GX2 companion chip
- Four selectable PCI clocks
- Three LPC interface clocks
- One fixed 66 MHz clock
- Two reference clocks
- 48 MHz USB and 48 MHz I/O support
- Power-down mode
- Low EMI Enable reduces EMI radiation on PCI clocks, LCLKS, and 66 MHz clock
- Operating voltage of 3.3 V
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 271 KB | |
| End Of Life Notice | PDF 859 KB | |
| Product Change Notice | PDF 95 KB | |
| Product Change Notice | PDF 50 KB | |
| Product Change Notice | PDF 361 KB | |
| Product Change Notice | PDF 254 KB | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
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