Datasheet

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ADM1276 Data Sheet

Rev. C | Page 36 of 48

OPERATION

Code: 0x01, read/write byte. Value after reset: 0x80.

Table 10. Bit Descriptions for OPERATION Command

Bits Bit Name Settings Description

[7] On 0 Hot swap output is disabled.

1 Default. Hot swap output is enabled.

[6:0]

Reserved

0000000

Always reads as 0000000.

CLEAR_FAULTS

Code: 0x03, send byte, no data.

CAPABILITY

Code: 0x19, read byte. Value after reset: 0xB0.

Table 11. Bit Descriptions for CAPABILITY Command

Bits Bit Name Settings Description

[7] Packet error checking 1 Always reads as 1. Packet error checking (PEC) is supported.

[6:5] Maximum bus speed 01 Always reads as 01. Maximum supported bus speed is 400 kHz.

[4]

SMBALERT#

Always reads as 1. Device supports SMBAlert and alert response address (ARA).

[3:0] Reserved 0000 Always reads as 0000.

VOUT_OV_WARN_LIMIT

Code: 0x42, read/write word. Value after reset: 0x0FFF.

Table 12. Bit Descriptions for VOUT_OV_WARN_LIMIT Command

Bits Bit Name Settings Description

[15:12] Reserved 0000 Always reads as 0000.

[11:0] VOUT_OV_WARN_LIMIT Overvoltage threshold for the VOUT pin measurement, expressed in ADC codes.

VOUT_UV_WARN_LIMIT

Code: 0x43, read/write word. Value after reset: 0x0000.

Table 13. Bit Descriptions for VOUT_UV_WARN_LIMIT Command

Bits Bit Name Settings Description

[15:12]

Reserved

0000

Always reads as 0000.

[11:0] VOUT_UV_WARN_LIMIT Undervoltage threshold for the VOUT pin measurement, expressed in ADC codes.

IOUT_OC_WARN_LIMIT

Code: 0x4A, read/write word. Value after reset: 0x0FFF.

Table 14. Bit Descriptions for IOUT_OC_WARN_LIMIT Command

Bits Bit Name Settings Description

[15:12] Reserved 0000 Always reads as 0000.

[11:0] IOUT_OC_WARN_LIMIT

Overcurrent threshold for the IOUT measurement through the sense resistor,

expressed in ADC codes.

IOUT_WARN2_LIMIT

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

Table 15. Bit Descriptions for IOUT_WARN2_LIMIT Command

Bits Bit Name Settings Description

[15:12] Reserved 0000 Always reads as 0000.

[11:0]

IOUT_WARN2_LIMIT

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 that is set using the DEVICE_CONFIG command.