In order to keep two ramp generating PLLs in sync, I enabled the TXdata trigger feature in TXdata section of ADF4158-9 GUI. One PLL was not responding i.e., ramp didn't start upon giving the TXdata Pulse upon selecting the Pulse TXdata option in GUI.
I even provided a 1v8 supply externally at TXdata SMA connector of the Evaluation board but didn't respond.
Provided a 1v8 supply on the TXD pad of the evaluation board. Still no response.
I ensured that the voltage level didn't go beyond 1v8.
Is there any possibility of the trigger pin of PLL getting damaged by any means?
Under what circumstances the PLL cannot respond to TXdata pulse?
Note: Ramp signal is generating from PLL when keeping the TXdata trigger disabled.
Thanks and regards,