AD7147 datasheet(41/68 Pages) AD

41 / 68 page

AD7147

Rev. 0 | Page 41 of 68

DETAILED REGISTER DESCRIPTIONS

BANK 1 REGISTERS

All addresses and default values are expressed in hexadecimal.

Table 20. PWR_CONTROL Register

Address

Data Bit

Default

Value

Type

Name

Description

0x000

[1:0]

R/W

POWER_MODE

Operating modes

00 = full power mode (normal operation, CDC

conversions approximately every 36 ms)

01 = full shutdown mode (no CDC conversions)

10 = low power mode (automatic wake-up operation)

11 = full shutdown mode (no CDC conversions)

[3:2]

R/W

LP_CONV_DELAY

Low power mode conversion delay

00 = 200 ms

01 = 400 ms

10 = 600 ms

11 = 800 ms

[7:4]

R/W

SEQUENCE_STAGE_NUM

Number of stages in sequence (N + 1)

0000 = 1 conversion stage in sequence

0001 = 2 conversion stages in sequence

……

Maximum value = 1011 = 12 conversion stages per

sequence

[9:8]

R/W

DECIMATION

ADC decimation factor

00 = decimate by 256

01 = decimate by 128

10 = decimate by 64

11 = decimate by 64

[10]

R/W

SW_RESET

Software reset control (self-clearing)

1 = resets all registers to default values

[11]

R/W

INT_POL

Interrupt polarity control

0 = active low

1 = active high

[12]

R/W

EXT_SOURCE

Excitation source control

0 = enable excitation source to CINx pins

1 = disable excitation source to CINx pins

[13]

Unused

Set to 0

[15:14]

R/W

CDC_BIAS

CDC bias current control

00 = normal operation

01 = normal operation + 20%

10 = normal operation + 35%

11 = normal operation + 50%

AD7147 Datasheet(PDF) 41 Page - Analog Devices

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