Datasheet

ADM1075 Data Sheet
Rev. B | Page 40 of 52
PIN OP WARN LIMIT REGISTER
Address: 0x6B, Reset: 0x7FFF, Name: PIN_OP_WARN_LIMIT
Table 14. Bit Descriptions for PIN_OP_WARN_LIMIT
Bits Bit Name Settings Description Reset Access
15 RESERVED Always reads as 0. 0x0 R
[14:0] PIN_OP_WARN_LIMIT Overpower threshold for the PMBus power measurement, expressed
in ADC codes.
0x7FFF RW
STATUS BYTE REGISTER
Address: 0x78, Reset: 0x00, Name: STATUS_BYTE
Table 15. Bit Descriptions for STATUS_BYTE
Bits Bit Name Settings Description Reset Access
7 RESERVED Always reads as 0. 0x0 R
6 HOTSWAP_OFF Live register. 0x0 R
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 ADM1075 to latch off, an undervoltage condition on
the UVx pin, or the use of the OPERATION command to turn the
output off.
5 RESERVED Always reads as 0. 0x0 R
4 IOUT_OC_FAULT Latched register. 0x0 R
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 register. 0x0 R
0 No undervoltage input fault detected on the UVH/UVL pins.
1 An undervoltage input fault was detected on the UVH/UVL pins.
2 RESERVED Always reads as 0. 0x0 R
1 CML_FAULT Latched register. 0x0 R
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 register. 0x0 R
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.
STATUS WORD REGISTER
Address: 0x79, Reset: 0x0000, Name: STATUS_WORD
Table 16. Bit Descriptions for STATUS_WORD
Bits Bit Name Settings Description Reset Access
15 RESERVED Always reads as 0. 0x0 R
14 IOUT_STATUS Live register. 0x0 R
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.