EVAL-ADM1275EBZ Datasheet, PDF (37/48 Pages) Analog Devices – Hot-Swap Controller and Digital Power

Data Sheet
OPERATION
Code: 0x01, read/write byte. Value after reset: 0x80.
Table 12. 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.
ADM1275
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
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#
1 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.
Rev. D | Page 37 of 48