ADM1275-1ACPZ-R7 datasheet(37/48 Pages) AD

37 / 48 page

Data Sheet

ADM1275

Rev. D | Page 37 of 48

OPERATION

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

Table 12. Bit Descriptions for OPERATION Command

Bits

Bit Name

Settings

Description

Hot-swap output is disabled.

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 13. Bit Descriptions for CAPABILITY Command

Bits

Bit Name

Settings

Description

Packet error checking

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

[6:5]

Maximum bus speed

Always reads as 01. Maximum supported bus speed is 400 kHz.

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.

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

Table 14. 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.

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

Table 15. 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 16. 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.

ADM1275-1ACPZ-R7 数据表(PDF) 37 Page - Analog Devices

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