Hi Igor,
thanks for your answer. Actually I do not want to change my software ;-) It is not Z-Stack, but it uses the startup procedures from TI. Within these procedures it activates the 32kHz crystal and waits with "while (CLKCONSTA != (CLKCONCMD_32MHZ | OSC_32KHZ));"
I think that the CLKCONSTA only reflects the state of the actual clock settings, but I would like to have the confirmation that this register does NOT indicate the stability or the presence of the crystal.
Best regards,
Tobias