Intel 8XC196MC User Manual page 486

AD_TEST
The A/D test (AD_TEST) register specifies adjustments for DC offset errors.
7
— —
Bit Bit
Number Mnemonic
7:5 —
4 OFF1
3 —
2 OFF0
1:0 —
— OFF1
Reserved; for compatibility with future devices, write zeros to these bits.
Offset
This bit , along with OFF0 (bit 2) allows you to set the zero offset point.
OFF1 OFF0
0 0 no adjustment
0 1 add 2.5 mV
1 0 subtract 2.5 mV
1 1 subtract 5.0 mV
Reserved; for compatibility with future devices, write zero to this bit.
See bit 4 (OFF1).
Reserved; for compatibility with future devices, write zeros to these bits.
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Address:
Reset State (MC, MD):
Reset State (MH):
— OFF0
Function
REGISTERS
AD_TEST
1FAEH
C0H
88H
0
— —
C-9