Rainbow Electronics MAX5661 - Manual (Page 24)

MAX5661
Single 16-Bit DAC with Current and Voltage
Outputs for Industrial Analog Output Modules
24 _______________________________________________________________________________________
BIT NAME
DATA
BIT
RESET
STATE
FUNCTION
OUTVON D15 0 DAC OUTV output enable bit. Set to 1 to enable the OUTV output.
OUTION D14 0 DAC OUTI output enable bit. Set to 1 to enable the OUTI output.
— D13 0 Reserved. Always set to 0.
B/U D12 0
Voltage-output unipolar/bipolar mode select bit. Set to 0 (default power-up state) to select the
bipolar output range (±10.48V). Set to 1 to select the unipolar output range (0 to +10.48V).
OUTI4/0EN D11 0
OUTI4/0 enable bit. Set to 0 (default power-up state) to enable the OUTI4/0 hardware input. Set
to 1 to disable the OUTI4/0 hardware input, thereby controlling the current-output range
through software commands.
I4TO20BIT D10 0
OUTI current range bit. Set to 0 to set the OUTI current range from 0 to 20mA. Set to 1 to set
the OUTI current range from 4–20mA.
CLREN D9 0
Clear enable bit. Set to 0 to enable the external CLR input. Set to 1 to disable the external CLR
input.
CLRMODE D8 0
Clear mode bit. Set to 1 and drive the external CLR input low to force the DAC output to the
value stored in the clear register. Set to 0 and drive the external CLR input low to force the DAC
output to 0V in voltage mode or 0mA/4mA depending on output-current mode.
RCLR D7 0
Remain in clear bit. Set to 1 to remain in the clear state. The RCLR bit determines the steps
required to exit the clear state. See the CLR Input section.
FAULTEN D6 0
Fault output enable. Set to 1 to enable the FAULT output functionality. Set to 0 to disable the
FAULT output functionality.
CLRFLAGEN D5 0 C l ear fl ag enab l e. S et to 1 to enab l e the FAU LT outp ut to r ep or t w hen the d evi ce i s i n the cl ear state.
FAULTV D4 0
Output voltage fault bit (read only). The FAULTV bit is set to 1 when FAULT triggers due to an
OUTV short-circuit condition. The FAULTV bit is a don’t-care bit for control-register write
commands.
FAULTI D3 0
Output-current fault bit (read only). The FAULTI bit is set to 1 when FAULT triggers due to an
OUTI open-circuit condition. The FAULTI bit is a don’t-care bit for the control register write
commands.
CLEARST D2 0
C l ear state b i t ( r ead onl y) . The C LE ARS T b i t i s set to 1 w hen CLR i s l ow and C LRE N = 0. The C LRS T
b i t i s a d on’ t- car e b i t for contr ol r eg i ster w r i te com m and s.
X D1, D0 0 Not used.
Table 4. Control Register (Read/Write)