ADT7518 
 
Rev. A | Page 30 of 40 
DAC Configuration Register (Read/Write)  
[Address = 1Bh] 
This configuration register is an 8-bit read/write register that is 
used to control the output ranges of all four DACs and also to 
control the loading of the DAC registers if the LDAC
 pin is 
disabled (Bit C3 = 1, Control Configuration 3 register). 
 
Table 35. DAC Configuration 
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
0*  
0* 
0*  
0*  
0*  
0*  
0*  
0* 
* Default settings at power-up 
Table 36. 
Bit  
Function  
D0  
Selects the output range of DAC A.  
0 = 0 V to VREF. 
1 = 0 V to 2V
REF
. 
D1  
Selects the output range of DAC B.  
0 = 0 V to VREF. 
1 = 0 V to 2V
REF
. 
D2  
Selects the output range of DAC C.  
0 = 0 V to V
REF
. 
1 = 0 V to 2V
REF
. 
D3  
Selects the output range of DAC D.  
0 = 0 V to V
REF
. 
1 = 0 V to 2V
REF
. 
D5:D4    00 = A write to any DAC register generates LDAC 
command that updates that DAC only. 
01 = A write to DAC B or DAC D register generates 
LDAC command that updates DACs A, B or DACs C, D, 
respectively. 
10 = A write to DAC D register generates LDAC 
command that updates all four DACs. 
11 = LDAC command generated from LDAC register. 
D6:D7    Reserved. Write 0s only.  
 
LDAC Configuration Register (Write-Only)  
[Address = 1Ch] 
This configuration register is an 8-bit write register that is used 
to control the updating of the quad DAC outputs if the LDAC
 
pin is disabled and Bits D4:D5 of the DAC configuration reg-
ister are both set to 1. Also selects either the internal or external 
V
REF
 for all four DACs. Bits D0:D3 in this register are self-clear-
ing, i.e., reading back from this register will always give 0s for 
these bits. 
 
Table 37. LDAC Configuration 
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
0* 
0*  
0* 
0*  
0*  
0*  
0*  
0*  
* Default settings at power-up 
 
 
Table 38. 
Bit  
Function  
D0  
Writing a 1 to this bit will generate the LDAC command 
to update DAC A output only. 
D1  
Writing a 1 to this bit will generate the LDAC command 
to update DAC B output only.  
D2  
Writing a 1 to this bit will generate the LDAC command 
to update DAC C output only. 
D3  
Writing a 1 to this bit will generate the LDAC command 
to update DAC D output only. 
D4  
Selects either internal VREF or external VREF for DACs A 
and B. 
0 = External VREF
1 = Internal V
REF
. 
D5  
Selects either internal VREF or external VREF for DACs C 
and D. 
0 = External V
REF
1 = Internal V
REF
D6:D7    Reserved. Write 0s only.  
 
Interrupt Mask 1 Register (Read/Write) [Address = 1Dh] 
This mask register is an 8-bit read/write register that can be 
used to mask any interrupts that can cause the INT/INT
 pin to 
go active. 
 
Table 39. Interrupt Mask 1 
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
0*  
0*  
0*  
0*  
0* 
0*  
0* 
0*  
* Default settings at power-up 
Table 40. 
Bit     Function  
D0     0 = Enable internal THIGH interrupt. 
1 = Disable internal THIGH interrupt. 
D1     0 = Enable internal T
LOW
 interrupt. 
1 = Disable internal TLOW interrupt. 
D2     0 = Enable external T
HIGH
 interrupt or AIN1 interrupt. 
1 = Disable external T
HIGH
 interrupt or AIN1 interrupt. 
D3     0 = Enable external T
LOW
 interrupt. 
1 = Disable external T
LOW 
interrupt. 
D4     0 = Enable external temperature fault interrupt.. 
1 = Disable external temperature fault interrupt. 
D5     0 = Enable AIN2 interrupt. 
1 = Disable AIN2 interrupt. 
D6     0 = Enable AIN3 interrupt. 
1 = Disable AIN3 interrupt. 
D7     0 = Enable AIN4 interrupt. 
1 = Disable AIN4 interrupt.