The datasheet gives the device ID of AD7190 as "0xX4". What the 'X' mean? A random value? One chip in my design returns 0x84, can I infer that all AD7190 will return 0x84?
X is a don't care which is an unknown or random value. So any value of x does not matter as long as the ID register read back 0xX4.
Retrieving data ...