EVAL-AD5142DBZ View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

EVAL-AD5142DBZ

Dual Channel, 128-/256-Position, SPI, Nonvolatile Digital Potentiometer

Analog Devices 

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Data Sheet

AD5122/AD5142

Table 16. Advance Command Operation Truth Table

Control

Command

Bits[DB15:DB12]

Number C3 C2 C1 C0

Address

Bits[DB11:DB8]1

Data Bits[DB7:DB0]1

A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 Operation

0

0 0 0 0 X X X X X X X X X X X X NOP: do nothing

1

0 0 0 1 0 A2 0 A0 D7 D6 D5 D4 D3 D2 D1 D0 Write contents of serial

register data to RDAC

2

0 0 1 0 0 A2 0 A0 D7 D6 D5 D4 D3 D2 D1 D0 Write contents of serial

register data to input

register

3

0 0 1 1 0 A2 A1 A0 X X X X X X D1 D0 Read back contents

D1 D0 Data

0

0

Input register

0

1

EEPROM

1

0

Control

register

1

1

RDAC

4

0 1 0 0 A3 A2 0 A0 X X X X X X X 1 Linear RDAC increment

5

0 1 0 0 A3 A2 0 A0 X X X X X X X 0 Linear RDAC decrement

6

0 1 0 1 A3 A2 0 A0 X X X X X X X 1 +6 dB RDAC increment

7

0 1 0 1 A3 A2 0 A0 X X X X X X X 0 −6 dB RDAC decrement

8

0 1 1 0 A3 A2 0 A0 X X X X X X X X Copy input register to RDAC

(software LRDAC)

9

0 1 1 1 0 A2 0 A0 X X X X X X X 1 Copy RDAC register to

EEPROM

10

0 1 1 1 0 A2 0 A0 X X X X X X X 0 Copy EEPROM into RDAC

11

1 0 0 0 0 0 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 Write contents of serial

register data to EEPROM

12

1 0 0 1 A3 A2 0 A0 1 0 0 0 0 0 0 D0 Top scale

D0 = 0; normal mode

D0 = 1; shutdown mode

13

1 0 0 1 A3 A2 0 A0 0 0 0 0 0 0 0 D0 Bottom scale

D0 = 1; enter

D0 = 0; exit

14

1 0 1 1 X X X X X X X X X X X X Software reset

15

1 1 0 0 A3 A2 0 A0 0 0 0 0 0 0 0 D0 Software shutdown

D0 = 0; normal mode

D0 = 1; device placed in

shutdown mode

16

1 1 0 1 X X X X X X X X X D2 D1 D0 Copy serial register data to

control register

1 X means don’t care.

Rev. C | Page 25 of 32

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