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Hi, I'm using 32768 Hz oscillator(part_num: ASEK-32.768KHz-LRT) for LFXT clock. My controller did not able to detect the clock signals, so the LFXT Fault Flag does not cleared in programme. I need LFXT for RTC_CLK. What should I do in this situation? I only connect the OUT pin from oscillator to LFXT-IN pin of controller.
To use an external oscillator (instead of a crystal) you need to set CSCTL4:LFXTBYPASS [Ref UG (SLAU367P) Sec 3.2.2 and Table 3-8] in addition to PJSEL0.4 [Ref data sheet (SLASE54D) Table 9-36]. Bypass mode turns off the internal crystal oscillator.
[Edit: There's an example here:
https://dev.ti.com/tirex/explore/node?node=A__APQelolPxXbEq4UomAe1vw__msp430ware__IOGqZri__LATEST
plus minor clarification.]
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