AD5749

Rev. 0 | Page 19 of 28

Table 7. Input Shift Register Contents for a Write Operation—Control Register

MSB

LSB

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

A2

A1

A0

R/W

0

R3

R2

R1

R0

CLRSEL

OUTEN

CLEAR

RSET

RESET

0

0

Table 8. Input Shift Register Descriptions for Control Register

Bit

Description

A2, A1, A0

Used in association with the AD2, AD1, and AD0 external pins to determine which part is being addressed by the system

controller.

A2

A1

A0

Function

0

0

0

Addresses part with Pin AD2 = 0, Pin AD1 = 0, Pin AD0 = 0.

0

0

1

Addresses part with Pin AD2 = 0, Pin AD1 = 0, Pin AD0 = 1.

0

1

0

Addresses part with Pin AD2 = 0, Pin AD1 = 1, Pin AD0 = 0.

0

1

1

Addresses part with Pin AD2 = 0, Pin AD1 = 1, Pin AD0 = 1.

1

0

0

Addresses part with Pin AD2 = 1, Pin AD1 = 0, Pin AD0 = 0.

1

0

1

Addresses part with Pin AD2 = 1, Pin AD1 = 0, Pin AD0 = 1.

1

1

0

Addresses part with Pin AD2 = 1, Pin AD1 = 1, Pin AD0 = 0.

1

1

1

Addresses part with Pin AD2 = 1, Pin AD1 = 1, Pin AD0 = 1.

R/W

Indicates a read from or a write to the addressed register.

R3, R2, R1, R0

Selects the output configuration in conjunction with RSET.

RSET

R3

R2

R1

R0

Output Configuration

0

0

0

0

0

4 mA to 20 mA (external 15 kΩ current sense resistor).

0

0

0

0

1

Unused command. Do not program.

0

0

0

1

0

0 mA to 24 mA (external 15 kΩ current sense resistor).

0

0

0

1

1

Unused command. Do not program.

0

0

1

0

0

Unused command. Do not program.

0

0

1

0

1

Unused command. Do not program.

0

0

1

1

0

Unused command. Do not program.

0

0

1

1

1

Unused command. Do not program.

0

1

0

0

0

Unused command. Do not program.

0

1

0

0

1

Unused command. Do not program.

0

1

0

1

0

Unused command. Do not program.

0

1

0

1

1

Unused command. Do not program.

0

1

1

0

0

Unused command. Do not program.

0

1

1

0

1

Unused command. Do not program.

0

1

1

1

0

Unused command. Do not program.

0

1

1

1

1

Unused command. Do not program.

1

0

0

0

0

4 mA to 20 mA (internal current sense resistor).

1

0

0

0

1

Unused command. Do not program.

1

0

0

1

0

0 mA to 24 mA (internal current sense resistor).

1

0

0

1

1

Unused command. Do not program.

1

0

1

0

0

Unused command. Do not program.

1

0

1

0

1

Unused command. Do not program.

1

0

1

1

0

Unused command. Do not program.

1

0

1

1

1

Unused command. Do not program.

1

1

0

0

0

Unused command. Do not program.

1

1

0

0

1

Unused command. Do not program.

1

1

0

1

0

Unused command. Do not program.

1

1

0

1

1

Unused command. Do not program.

1

1

1

0

0

Unused command. Do not program.

1

1

1

0

1

3.92 mA to 20.4 mA (internal current sense resistor).

1

1

1

1

0

Unused command. Do not program.

1

1

1

1

1

0 mA to 24.5 mA (internal current sense resistor).