Data Sheet

AD7389-4

Rev. 0 | Page 29 of 31

Bits

Bit Name

Description

Reset

Access

6

AL_D_LOW

Alert D Low. The alert indication low bit indicates if a conversion result for the respective

input channel exceeds the value set in the alert low threshold register. This fault bit is sticky

and remains set until the register is read.

0x0

R

0: no alert indication.

1: alert indication.

5

AL_C_HIGH

Alert C High. The alert indication high bit indicates if a conversion result for the respective

input channel exceeds the value set in the alert high threshold register. This fault bit is sticky

and remains set until the register is read.

0x0

R

1: alert indication.

0: no alert indication.

4

AL_C_LOW

Alert C Low. The alert indication low bit indicates if a conversion result for the respective

input channel exceeds the value set in the alert low threshold register. This fault bit is sticky

and remains set until the register is read.

0x0

R

1: alert indication.

0: no alert indication.

3

AL_B_HIGH

Alert B High. The alert indication high bit indicates if a conversion result for the respective

input channel exceeds the value set in the alert high threshold register. This fault bit is sticky

and remains set until the register is read.

0x0

R

1: alert indication.

0: no alert indication.

2

AL_B_LOW

Alert B Low. The alert indication low bit indicates if a conversion result for the respective

input channel exceeds the value set in the alert low threshold register. This fault bit is sticky

and remains set until the register is read.

0x0

R

1: alert indication.

0: no alert indication.

1

AL_A_HIGH

Alert A High. The alert indication high bit indicates if a conversion result for the respective

input channel exceeds the value set in the alert high threshold register. This fault bit is sticky

and remains set until the register is read.

0x0

R

0: no alert indication.

1: alert indication.

0

AL_A_LOW

Alert A Low. The alert indication low bit indicates if a conversion result for the respective

input channel exceeds the value set in the alert low threshold register. This fault bit is sticky

and remains set until the register is read.

0x0

R

1: alert indication.

0: no alert indication.

ALERT LOW THRESHOLD REGISTER

Addressing

Alert Low

0

0

1

0

2

0

3

0

4

0

5

0

6

0

7

0

8

0

9

0

10

0

11

1

12

0

13

0

14

0

15

0

[15:12] ADDRESSING (R/W)

[11:0] ALERT_LOW (R/W)

Table 21. Bit Descriptions for Alert Low Threshold Register

Bits

Bit Name

Description

Reset

Access

[15:12]

ADDRESSING

Addressing. Bits[15:12] define the address of the relevant register. See the Addressing

Registers section for further details.

0x0

R/W

[11:0]

ALERT_LOW

Alert Low. Bits[11:0] from ALERT_LOW move to the MSBs of the internal alert low register,

D[15:4]. The remaining bits, D[3:0] of the internal register are fixed at 0x0. Sets an alert when

the converter result is below the value in the alert low threshold register, and the alert is

disabled when it is above the value in the alert low threshold register.

0x800

R/W