Datasheet
Data Sheet ADPD1080/ADPD1081
Rev. B | Page 71 of 74
ADC REGISTERS
Table 43. ADC Registers
Address Data Bits
Default
Value Access Name Description
0x12 [15:0] 0x0028 R/W FSAMPLE Sampling frequency: f
SAMPLE
= 32 kHz/(Register 0x12, Bits[15:0] × 4).
For example, 100 Hz = 0x0050; 200 Hz = 0x0028.
0x15 [15:11] 0x00 R/W Reserved Write 0x0.
[10:8] 0x6 R/W SLOTB_NUM_AVG Sample sum/average for Time Slot B. Specifies the averaging factor,
N
B
, which is the number of consecutive samples that is summed and
averaged after the ADC. Register 0x70 to Register 0x7F hold the data
sum. Register 0x64 to Register 0x6B and the data buffer in Register 0x60
hold the data average, which can be used to increase SNR without
clipping, in 16-bit registers. The data rate is decimated by the value
of the SLOTB_NUMB_AVG bits.
0: 1.
1: 2.
2: 4.
3: 8.
4: 16.
5: 32.
6: 64.
7: 128.
7 0x0 R/W Reserved Write 0x0.
[6:4] 0x0 R/W SLOTA_NUM_AVG Sample sum/average for Time Slot A. N
A
: same as Bits[10:8] but for
Time Slot A. See description in Register 0x15, Bits[10:8].
[3:0] 0x0 R/W Reserved Write 0x0.
0x18 [15:0] 0x2000 R/W SLOTA_CH1_OFFSET Time Slot A Channel 1 ADC offset. The value to subtract from the
raw ADC value. A value of 0x2000 is typical.
0x19 [15:0] 0x2000 R/W SLOTA_CH2_OFFSET Time Slot A Channel 2 ADC offset. The value to subtract from the
raw ADC value. A value of 0x2000 is typical.
0x1A [15:0] 0x2000 R/W SLOTA_CH3_OFFSET Time Slot A Channel 3 ADC offset. The value to subtract from the
raw ADC value. A value of 0x2000 is typical.
0x1B [15:0] 0x2000 R/W SLOTA_CH4_OFFSET Time Slot A Channel 4 ADC offset. The value to subtract from the
raw ADC value. A value of 0x2000 is typical.
0x1E [15:0] 0x2000 R/W SLOTB_CH1_OFFSET Time Slot B Channel 1 ADC offset. The value to subtract from the raw
ADC value. A value of 0x2000 is typical.
0x1F [15:0] 0x2000 R/W SLOTB_CH2_OFFSET Time Slot B Channel 2 ADC offset. The value to subtract from the raw
ADC value. A value of 0x2000 is typical.
0x20 [15:0] 0x2000 R/W SLOTB_CH3_OFFSET Time Slot B Channel 3 ADC offset. The value to subtract from the raw
ADC value. A value of 0x2000 is typical.
0x21 [15:0] 0x2000 R/W SLOTB_CH4_OFFSET Time Slot B Channel 4 ADC offset. The value to subtract from the raw
ADC value. A value of 0x2000 is typical.
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