AD4680/AD4681

Data Sheet

Rev. 0 | Page 28 of 29

Bits

Bit Name

Description

Reset

Access

5

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.

4

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.

[3:2]

RESERVED

Reserved.

0x0

R

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

1: alert indication.

0: no 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

Address: 0x4, Reset: 0x0800, Name: ALERT_LOW_THRESHOLD

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 19. Bit Descriptions for ALERT_LOW_THRESHOLD

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,

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

the converter result is below ALERT_LOW_THRESHOLD and the alert is disabled when it is

above ALERT_LOW_THRESHOLD.

0x800

R/W

ALERT_HIGH_THRESHOLD REGISTER

Address: 0x5, Reset: 0x07FF, Name: ALERT_HIGH_THRESHOLD

Addressing

Alert High

0

1

1

1

2

1

3

1

4

1

5

1

6

1

7

1

8

1

9

1

10

1

11

0

12

0

13

0

14

0

15

0

[15:12] ADDRESSING (R/W)

[11:0] ALERT_HIGH (R/W)

Table 20. Bit Descriptions for ALERT_HIGH_THRESHOLD

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_HIGH

Alert High. Bits[11:0] from ALERT_HIGH move to the MSBs of the internal ALERT_HIGH register,

Bits[15:4]. The remaining Bits[3:0] of the internal register are fixed at 0xF. Sets an alert when

the converter result is above the ALERT_HIGH_THRESHOLD register and the alert is disabled

when the converter result is below the ALERT_HIGH_THRESHOLD register.

0x7FF

R/W