ADPD1081 datasheet(71/74 Pages) AD

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Data Sheet

ADPD1080/ADPD1081

Rev. C | 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: fSAMPLE = 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,

NB, 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.

0x0

R/W

Reserved

Write 0x0.

[6:4]

0x0

R/W

SLOTA_NUM_AVG

Sample sum/average for Time Slot A. NA: 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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