DC Offset (0x1n98, 0x8098, R/W, I)
Adjust the DC Offset level for channel n to exploit the full input dynamic range of the digitizer. A write access is in broadcast mode at 
0x8098 is supported to set the same value for all the channels at once.
Bit Description
[15:0] DC Offset value in DAC LSB unit. Since the DAC ranges over 16 bits,
      while the ADC is over 14 bits, write the desired value multiplied by
     4.
[31:16] Reserved