EVAL-ADM1275EBZ【PDF 39/48 页】BOARD EVALUATION FOR ADM1275

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Sheet目录1214

35页 36页 37页 38页 [39页]40页 41页 42页 43页

Data Sheet

STATUS_WORD

Code: 0x79, read word. Value after reset: 0x0000.

Table 21. Bit Descriptions for STATUS_WORD Command

ADM1275

Bits

15

Bit Name

VOUT_STATUS

Behavior

Live

Settings

0

Description

There are no active status bits to be read by STATUS_VOUT.

1

There are one or more active status bits to be read by STATUS_VOUT.

14

IOUT_STATUS

Live

0

There are no active status bits to be read by STATUS_IOUT.

1

There are one or more active status bits to be read by STATUS_IOUT.

13

VIN_STATUS

Live

0

There are no active status bits to be read by STATUS_INPUT.

1

There are one or more active status bits to be read by STATUS_INPUT.

12

MFR_STATUS

Live

0

There are no active status bits to be read by STATUS_MFR_SPECIFIC.

1

There are one or more active status bits to be read by STATUS_MFR_SPECIFIC.

11

POWER_GOOD#

Live

0

The voltage on the FLB pin is above the required threshold, indicating

that output power is considered good. This bit is the logical inversion of

the PWRGD pin on the part.

1

The voltage on the FLB pin is below the required threshold, indicating

that output power is considered bad.

[10:8]

[7:0]

Reserved

STATUS_BYTE

000

Always reads as 000.

This byte is the same as the byte returned by the STATUS_BYTE command.

STATUS_VOUT

Code: 0x7A, read byte. Value after reset: 0x00.

This command is supported on the ADM1275 -1 and the ADM1275 -3. The ADM1275 -2 does not have a VOUT pin.

Table 22. Bit Descriptions for STATUS_VOUT Command

Bits

7

6

Bit Name

Reserved

VOUT_OV_WARN

Behavior

Latched

Settings

0

0

Description

Always reads as 0.

No overvoltage condition on the output supply detected by the power

monitor.

1

An overvoltage condition on the output supply was detected by the

power monitor.

5

VOUT_UV_WARN

Latched

0

No undervoltage condition on the output supply detected by the power

monitor.

1

An undervoltage condition on the output supply was detected by the

power monitor.

[4:0]

Reserved

00000

Always reads as 00000.

STATUS_IOUT

Code: 0x7B, read byte. Value after reset: 0x00.

Table 23. Bit Descriptions for STATUS_IOUT Command

Bits

7

Bit Name

IOUT_OC_FAULT

Behavior

Latched

Settings

0

Description

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.

6

Reserved

0

Always reads as 0.

5

IOUT_OC_WARN

Latched

0

No overcurrent condition on the output supply detected by the power

monitor using the IOUT_OC_WARN_LIMIT command.

1

An overcurrent condition was detected by the power monitor using the

IOUT_OC_WARN_LIMIT command.

[4:0]

Reserved

00000

Always reads as 00000.

Rev. D | Page 39 of 48

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