MAX16031 Datasheet, PDF (21/42 Pages) Maxim Integrated Products – EEPROM-Based System Monitors with Nonvolatile Fault Memory

EEPROM-Based System Monitors
with Nonvolatile Fault Memory
Table 6. Temperature Sensor Fault Enable, Current-Sense Fault Enable, SMBALERT#
Enable, and Temperature Offset Trim
REGISTER
ADDRESS
EEPROM
MEMORY
ADDRESS
BIT RANGE
DESCRIPTION
Internal Temperature Sensor Faults Enable:
[0]
0 = Internal temperature sensor faults disabled
1 = Internal temperature sensor faults enabled
Remote Temperature Sensor 1 Faults Enable:
[1]
0 = Remote temperature sensor 1 faults disabled
1 = Internal temperature sensor 1 faults enabled
1Bh
9Bh
Remote Temperature Sensor 2 Faults Enable:
[2]
0 = Remote temperature sensor 2 faults disabled
1 = Remote temperature sensor 2 faults enabled
Current-Sense Fault Enable:
[3]
0 = Current-sense faults disabled
1 = Current-sense faults enabled
SMBALERT# Enable (ALERT):
[4]
0 = SMBALERT# disabled
1 = SMBALERT# enabled
[7:5]
[1:0]
[3:2]
Remote Temperature Sensor 1 Offset Trim:
Offset = 4 × X, where X is the two’s-complement 3-bit temperature code
(1 LSB = 0.5°C). Since X is multiplied by 4, the offset LSB size is 2°C,
allowing a total offset adjustment of ±6°C.
Internal Temperature Sensor Primary Overtemperature Threshold LSB
Internal Temperature Sensor Secondary Overtemperature Threshold LSB
Remote Temperature Sensor 2 Offset Trim:
4Dh
CDh
[6:4]
Offset = 4 × X, where X is the two’s-complement 3-bit temperature code
(1 LSB = 0.5°C). Since X is multiplied by 4, the offset LSB size is 2°C,
allowing a total offset adjustment of ±6°C.
[7]
Not used.
ing diode open/short fault conditions, and the corre-
sponding diode open/short flags must be cleared to
release the latch. See r1Fh in Table 8 for more informa-
tion on OVERT output dependencies.
The current fault output OVERC indicates overcurrent
events. OVERC only depends on the primary analog
overcurrent threshold. See the Current Monitoring sec-
tion for more information about the current-sense amplifi-
er and the primary threshold. The secondary overcurrent
threshold is set digitally and is used by other outputs.
The secondary threshold also has a programmable time-
out option (see Miscellaneous Settings section).
GPIO1 and GPIO2 are programmable as logic inputs,
manual reset inputs, logic outputs, or fault dependent
outputs. See r22h–r25h in Table 8 for more detailed
information on GPIO1/GPIO2 functionality. GPIO1 and
GPIO2 assert low when configured as a fault output.
ALERT is an SMBALERT#-compatible fault interrupt
output. When enabled, it is logically ANDed with out-
puts RESET, FAULT1, FAULT2, OVERT, OVERC, and
GPIO1/GPIO2 (only if enabled as fault outputs). When
any fault output is asserted, ALERT also asserts, inter-
rupting the SMBus master to query the fault. The mas-
ter needs to answer MAX16031/MAX16032 with a
specific SMBus command (ARA) to retrieve the slave
address of the interrupting device. See the I²C/SMBus-
Compatible Serial Interface section for more details.
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