Convert int to 16 bit unsigned short

Use ctypes.c_ushort:

>>> import ctypes
>>> word.insert(0, ctypes.c_ushort(0x19c6acc6).value)
>>> word
array('H', [44230])

If NumPy is available then:

>>> numpy.ushort(0x19c6acc6)
44230

The classical way is to extract the relevant bits using a mask:

>>> hex(0x19c6acc6 & 0xffff)
'0xacc6'