Datasheet

Data Sheet AD5749
Rev. B | 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).