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FemtoClock®2 GUI User Guide
3.1
Inputs
There are two sections to make note of when configuring the inputs: Crystal and CLKIN. The Crystal section is
used when creating a configuration that is either in synthesizer mode and uses a clock at the XIN pin, or in any
Jitter Attenuator mode. The same applies for the CLKIN section. Device mode is through the "Operation Mode"
dropdown menu. Device modes include Synthesizer, Jitter Attenuator, and DCO.
Descriptions of each mode can be found on the right side panel of the page.
Note: Some devices may not have both Jitter Attenuator and Synthesizer modes together.
When using Synthesizer mode, the user has the ability to select the APLL reference through the "APLL
Reference" drop-down menu.
R31US0004EU0100 Rev.1.0
Apr 22, 2021
Page 5
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