Hi Yael,
I was looking into the IRQ trace and one thing came out i.e. till the the time CC3000 is receiving data I can see high to low transaction in IRQ line and it will again go back to high level but once it hangs I can see IRQ line remain low forever.
I can also see the same behviour if I read a radio parameter in a loop , for few times it will read the EEPROM parameter successfully then control will hang in hci_event_handler function and wait for tSLInformation.usEventOrDataReceived flag to get set.
I hope this information will give some direction to you to figure out the root cause of this issue, what could be the possible reason of this behaviour?
why does CC3000 kept IRQ line low after some time?
Also we are working on getting UART trace, it will take some time because our evaluation board does not have those connection out to take the trace.