Datasheet

8 Maxim Integrated
Evaluates: MAX6581
MAX6581 Evaluation Kit
Table 7. Diode Fault Status Register
Table 6. OVERT Status Register
The Diode Fault Status (0x46) group box indicates
whether there is a diode fault (open or short) in any of
the remote-sensing channels.
The Alert Low Status (0x47) group box indicates
whether a measured local or remote temperature has
fallen below the threshold limit set in the ALERT Low
Limit register (ALERT Low Limit All Channels (0x30)).
Resistance Cancellation
Resistance cancellation is available for all remote
channels and compensates for high series resistance
in circuit-board traces and thermal diodes. Table
9 describes the function for each checkbox in the
Resistance Cancellation (0x4A) tab.
Read the register by clicking on the Read button.
Change the register by selecting or deselecting the
desired functions and pressing the Write button.
BIT NAME FUNCTION
7 RESERVED Not used.
6 Diode Fault 7 DXP7 and DXN7 are open circuit or when DXP7 is connected to V
CC
.
5 Diode Fault 6 DXP6 and DXN6 are open circuit or when DXP6 is connected to V
CC
.
4 Diode Fault 5 DXP5 and DXN5 are open circuit or when DXP5 is connected to V
CC
.
3 Diode Fault 4 DXP4 and DXN4 are open circuit or when DXP4 is connected to V
CC
.
2 Diode Fault 3 DXP3 and DXN3 are open circuit or when DXP3 is connected to V
CC
.
1 Diode Fault 2 DXP2 and DXN2 are open circuit or when DXP2 is connected to V
CC
.
0 Diode Fault 1 DXP1 and DXN1 are open circuit or shorted together.
BIT NAME FUNCTION
7 Remote OVERT 7
The channel 7 remote-diode temperature exceeds the temperature threshold limit in the
remote 7 OVERT High Limit register.
6 Local OVERT
Local Channel Overtemperature Status Bit. This bit is set to logic 1 when the local temper-
ature exceeds the temperature threshold limit in the local OVERT High Limit register.
5 Remote OVERT 6
The channel 6 remote-diode temperature exceeds the temperature threshold limit in the
remote 6 OVERT High Limit register.
4 Remote OVERT 5
The channel 5 remote-diode temperature exceeds the temperature threshold limit in the
remote 5 OVERT High Limit register.
3 Remote OVERT 4
The channel 4 remote-diode temperature exceeds the temperature threshold limit in the
remote 4 OVERT High Limit register.
2 Remote OVERT 3
The channel 3 remote-diode temperature exceeds the temperature threshold limit in the
remote 3 OVERT High Limit register.
1 Remote OVERT 2
The channel 2 remote-diode temperature exceeds the temperature threshold limit in the
remote 2 OVERT High Limit register.
0 Remote OVERT 1
The channel 1 remote-diode temperature exceeds the temperature threshold limit in the
remote 1 OVERT High Limit register.