Features
- Packaged in 28-pin SOIC or in 28-pin SSOP
- Provides all critical timing for the AMD Geode companion chip
- Four PCI clocks
- Selectable PCIF on up to 2 outputs
- Early PCI clock selectability
- Up to four reference clocks
- 48 MHz USB and 24 MHz SIO support
- AC97 audio clock
- Multiple power-down modes
- Low EMI Enable pin reduces EMI radiation on PCI clocks (patented)
- Operating voltage of 3.3 V ±5%
- Available in commercial (0 to +70°C) and industrial (-40 to +85°C) temperature ranges
Description
The MK1491-06 is a low-cost, low-jitter, high-performance clock synthesizer for AMD's Geode-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 clocks, 24 MHz and 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.
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