AD74115 datasheet(84/103 Pages) AD

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Data Sheet

AD74115

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Rev. 0 | 84 of 103

Table 46. Bit Descriptions for DO_EXT_CONFIG (Continued)

Bits

Bit Name

Description

Reset

Access

[8:4]

DO_EXT_T1

External Digital Output Short-Circuit T1. Set these bits to program the T1 short-circuit duration. Setting this

detected. Note T1 is not available in push-pull mode of operation.

0x0

R/W

00: T1 bypass.

01: T1 100.812 μs.

02: T1 100.812 μs.

03: T1 100.812 μs.

04: T1 100.812 μs.

05: T1 100.812 μs.

06: T1 100.812 μs.

07: T1 100.812 μs.

08: T1 130.08 μs.

09: T1 180.486 μs.

10: T1 240.648 μs.

11: T1 320.322 μs.

12: T1 420.321 μs.

13: T1 560.157 μs.

14: T1 750.399 μs.

15: T1 1.000803 ms.

16: T1 1.3008 ms.

17: T1 1.800795 ms.

18: T1 2.400789 ms.

19: T1 3.200781 ms.

20: T1 4.200771 ms.

21: T1 5.600757 ms.

22: T1 7.500738 ms.

23: T1 10.000713 ms.

24: T1 13.000683 ms.

25: T1 18.000633 ms.

26: T1 24.000573 ms.

27: T1 32.000493 ms.

28: T1 42.000393 ms.

29: T1 56.000253 ms.

30: T1 75.000063 ms.

31: T1 100.000626 ms.

DO_EXT_SRC_SEL

Select Data Driver for FET.

0x0

R/W

1: the GPIO_x pin is configured to drive the FET. Note that when this bit is set, configure the GPIO_CONFIG1

0: direct software control of the FET. When under software control, the FET is controlled via DO_DATA_EXT.

[2:0]

DO_EXT_MODE

External Digital Output Mode Select. Note that, if the DO_EXT_TIMEOUT bit in the ALERT_STATUS register

is set, the digital output function disables. The DO_EXT_MODE automatically configures to select digital

output external disable mode. When switching between digital output modes, ensure that the digital output

external disable mode is the intermediate step.

0x0

R/W

000: digital output external disable.

001: external source.

010: external sink.

011: external push-pull. DO_EXT_SRC_SEL determines the data source. A 0 from the data source enables

the FET sinking, and a 1 from the data source enables the FET sourcing.

100: external source with smart diode.

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