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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AD5122/AD5142

Data Sheet

Table 10. Reduced Commands Operation Truth Table

Control

Command Bits[DB15:DB12]

Number C3 C2 C1 C0

Address

Bits[DB11:DB8]1

A3 A2 A1 A0

Data Bits[DB7:DB0]1

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

data to RDAC

2

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

data to input register

3

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

D1 D0 Data

0

1

EEPROM

1

1

RDAC

9

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

10

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

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 0 0 A0 X X X X X X X D0 Software shutdown

D0 Condition

0

Normal mode

1

Shutdown mode

1X means don’t care.

Table 11. Reduced Address Bits Table

A3

A2

A1

A0

Channel

1

X1

X1

X1

All channels

0

0

0

0

RDAC1

0

0

0

1

RDAC2

0

0

1

0

Not applicable

Stored Channel Memory

Not applicable

RDAC1

Not applicable

RDAC2

1X means don’t care.

Rev. C | Page 22 of 32

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