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Installing the EVM Control Software and USB Driver
1.
Primary/Secondary Reference
The primary or the secondary reference input buffer section on the EVMCS can be clicked for a popup
window that opens, as shown in
, showing selections on the external input signal type
(differential or single ended), the external signal connection to the CDCE62005 primary/secondary
inputs (AC or DC termination), input-buffer internal termination (enabled or disabled), and the
input-buffer VBB voltage polarity (normal or inverted).
Figure 3. Input Buffer Properties
2.
Reference Input Selection through Smart MUX
The Smart MUX section of the EVMCS can be clicked for a popup window that opens, as shown in
, showing
•
Selections on the EECLKSEL option
–
“0” suggests using the REF_SEL pin for input selection and disabling the auto-select feature
–
“1” suggests using the auto-select feature and disabling the REF_SEL feature)
–
the Smart MUX reshaping (reshaping either or both of the primary and secondary input signals,
introducing short delay to either or both of the primary and secondary input signals for fast
operation)
•
Selection of the reference divider of the primary or the secondary input signal after the first of the
two Smart MUX-es
Figure 4. Smart MUX
3.
PFD and Charge Pump Selection
SCAU024 – September 2008
Low Phase Noise Clock Evaluation Module — up to 1.5 GHz
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