AD7151

Rev. 0 | Page 14 of 28

REGISTER DESCRIPTIONS

Table 5. Register Summary

Pointer

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Register

(Dec) (Hex) R/W

Default Value

PwrDown

–

–

DacStep

OUT

–

–

RDY

Status

0

0x00

R

0

1

0

1

0

0

1

1

Data High

1

0x01

R

0x00

Data Low

2

0x02

R

0x00

–

3

0x03

R

0x00

–

4

0x04

R

0x00

Average High

5

0x05

R

0x00

Average Low

6

0x06

R

0x00

–

7

0x07

R

0x00

–

8

0x08

R

0x00

Sensitivity (in adaptive threshold mode)/Threshold High Byte (in fixed threshold mode)

Sensitivity

Threshold High

9

0x09

R/W

0x08

Timeout (in adaptive threshold mode)/Threshold Low Byte (in fixed threshold mode)

Timeout

Threshold Low

10

0x0A R/W

0x86

RngH

RngL

–

Hyst

ThrSettling (4-bit value)

Setup

11

0x0B

R/W

0

0

0

0

0x0B

–

12

0x0C R/W

0x00

–

13

0x0D R/W

0x00

–

14

0x0E

R/W

0x00

ThrFixed

ThrMD1

ThrMD0

EnConv

–

MD2

MD1

MD0

Configuration

15

0x0F

R/W

0

0

0

1

0

0

0

1

–

–

Power-Down Timeout (6-bit value)

Power-Down Timer

16

0x10

R/W

0

0

0x00

DacEn

DacAuto

DacValue (6-bit value)

CAPDAC

17

0x11

R/W

1

1

0x00

–

18

0x12

R/W

0x00

Serial Number 3

19

0x13

R

Serial Number – Byte 3 (MSB)

Serial Number 2

20

0x14

R

Serial Number – Byte 2

Serial Number 1

21

0x15

R

Serial Number – Byte 1

Serial Number 0

22

0x16

R

Serial Number – Byte 0 (LSB)

Chip ID

23

0x17

R

Chip Identification Code