Description
The MK1491-09 is a low-cost, low-jitter, high-performance clock synthesizer for AMD’s Geode-based computer and portable appliance applications. Using patented analog Phased-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.

FEATUREs
• Packaged in 28-pin SSOP (209 mil body)
• Available in Pb (lead) free packaged
• Provides all critical timing for the AMD Geode companion chip
• Four selectable PCI clocks
• Three LPC interface clocks
• One Fixed 66 MHz clock
• 2 Reference clocks
• 48 MHz USB and 48 MHz IO support
• Power down mode
• Low EMI Enable pin reduces EMI radiation on PCI clocks, LCLKS, and 66 MHz clock
• Operating voltage of 3.3 V ±5%