EVAL-ADM1275EBZ【PDF 38/48 页】BOARD EVALUATION FOR ADM1275

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ADM1275

IOUT_WARN2_LIMIT

Code: 0xD7, read/write word. Value after reset: 0x0000.

Table 17. Bit Descriptions for IOUT_WARN2_LIMIT Command

Data Sheet

Bits

[15:12]

[11:0]

Bit Name

Reserved

IOUT_WARN2_LIMIT

Settings

0000

Description

Always reads as 0000.

Threshold for the IOUT measurement through the sense resistor, expressed in ADC

codes. This value can be either an undercurrent or an overcurrent, depending on the

state of the IOUT_WARN2_SELECT bit set using the DEVICE_CONFIG command.

VIN_OV_WARN_LIMIT

Code: 0x57, read/write word. Value after reset: 0x0FFF.

Table 18. Bit Descriptions for VIN_OV_WARN_LIMIT Command

Bits

[15:12]

[11:0]

Bit Name

Reserved

VIN_OV_WARN_LIMIT

Settings

0000

Description

Always reads as 0000.

Overvoltage threshold for the SENSE+ pin measurement, expressed in ADC codes.

VIN_UV_WARN_LIMIT

Code: 0x58, read/write word. Value after reset: 0x0000.

Table 19. Bit Descriptions for VIN_UV_WARN_LIMIT Command

Bits

[15:12]

[11:0]

Bit Name

Reserved

VIN_UV_WARN_LIMIT

Settings

0000

Description

Always reads as 0000.

Undervoltage threshold for the SENSE+ pin measurement, expressed in ADC codes.

STATUS_BYTE

Code: 0x78, read byte. Value after reset: 0x00.

Table 20. Bit Descriptions for STATUS_BYTE Command

Bits

7

6

Bit Name

Reserved

HOTSWAP_OFF

Behavior

Live

Settings

0

0

Description

Always reads as 0.

The hot-swap gate drive output is enabled.

1

The hot-swap gate drive output is disabled, and the GATE pin is pulled

down. This can be due to, for example, an overcurrent fault that causes

the ADM1275 to latch off, an undervoltage condition on the UV pin, or

the use of the OPERATION command to turn the output off.

5

Reserved

0

Always reads as 0.

4

IOUT_OC_FAULT

Latched

0

No overcurrent output fault detected.

1

The hot-swap controller detected an overcurrent condition and the time

limit set by the capacitor on the TIMER pin has elapsed, causing the hot-

swap gate drive to shut down.

3

VIN_UV_FAULT

Latched

0

No undervoltage input fault detected on the UV pin.

1

An undervoltage input fault was detected on the UV pin.

2

Reserved

0

Always reads as 0.

1

CML_ERROR

Latched

0

No communications error detected on the I 2 C/PMBus interface.

1

An error was detected on the I 2 C/PMBus interface. Errors detected are

unsupported command, invalid PEC byte, and incorrectly structured

message.

0

NONE_OF_THE_ABOVE

Live

0

No other active status bit to be reported by any other status command.

1

Active status bits are waiting to be read by one or more status commands.

Rev. D | Page 38 of 48

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