This event is emitted after the PDHC has waited longer than a maximum expected time to obtain control of the PDH bus semaphore. The PDHC will continue waiting for control of the PDH bus semaphore until System FW relinquishes control of the semaphore, or the Cell is powered off using the MP's PE command. While waiting for the PDH bus semaphore, the PDHC will NOT perform its normal duties such as monitoring the Cell status, and passing messages from the system to the MP, and the PDHC heartbeat will not blink. The data field contains debug data that may be useful for developers. Data_byte[0] = last value read from PDHC's address for the microSemaphore register. Data_byte[1] = boolean indicator (1=set,0=not_set) of whether the PDHC's flag is set. Data_byte[2] = boolean indicator (1=set,0=not_set) of whether the System FW's flag is set.