REVISION A 09/15/14
7
82P33714/33814 EVALUATION BOARD
Figure 7. IN01 is Disabled as an Input Clock to DPLL (orange oval) because it's only used as a sync signal
for IN02
6. Each DPLL has Profile Selection and a “Configure” button. In general, the pull-down Profile Selection should be sufficient
to automatically pre-configure the DPLL and reference monitor for the specific ITU-T recommendation. Click “Configure”
button to open up configuration window for respective DPLL for additional or customized configuration. There are
pull-down items for each configuration parameter. For example, in “Operation Mode” section, you can select:
◦
Automatic, or Free-up to force Lock or Free-run;
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Different base frequencies can be selected from pull-down items in Selector A or Select B;
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Input reference can be set manually set to a particular input, or set it in “Automatic” mode, in which case an input
reference is selected based on priority among multiple input references;
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Feedback can be “Internal feedback mode” or use one of the input references as an “external feedback mode”. When
in external feedback mode, a clock source must be supplied to the input chosen at the same frequency as the input
to the DPLL (typically, it is 8kHz).
