Some confusion about the Signal Phase

Hello guys, Recently, I am confused with the comple value from Register
file: 0x25 – Accumulator CIR. From the user manual we can know that the Channel Impulse Response(CIR) is calculated by this complex value. I would like to know, can we also obtain the phase of the signal by this complex value. If we can, what dose the physical meaning of the phase value. If we can’t, how can we calculated the phase value of the signal.