JAJSII9E april 2020 – june 2023 DRA821U , DRA821U-Q1
PRODUCTION DATA
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Figure 7-33 shows the recommended oscillator connections when OSC1_XI is connected to a 1.8-V LVCMOS square-wave digital clock source.
A DC steady-state condition is not allowed on OSC1_XI when the oscillator is powered up. This is not allowed because OSC1_XI is internally AC coupled to a comparator that may enter a unknown state when DC is applied to the input. Therefore, application software should power down OSC1 any time OSC1_XI is not toggling between logic states.