MAX31785ETL+ Maxim Integrated Products, MAX31785ETL+ Datasheet - Page 35

• Manufacturer Part Number: MAX31785ETL+
• Description: Board Mount Temperature Sensors 6Ch Intelligent Fan Controller
• Manufacturer: Maxim Integrated Products

Specifications of MAX31785ETL+

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MFR_MODE command is used to configure the device to support manufacturer specific commands. The
MFR_MODE command is described in Table 22.
Table 22. MFR_MODE
10:8
BIT
7:6
15
14
13
12
11
5
4
3
2
1
0
FORCE_NV_FAULT_LOG
CLEAR_NV_FAULT_LOG
FAN_HEALTH_CRITERIA
ADC5_ENABLE
ADC4_ENABLE
ADC3_ENABLE
ADC2_ENABLE
ADC1_ENABLE
ADC0_ENABLE
SOFT_RESET
BIT NAME
ALERT
0
0
6-Channel Intelligent Fan Controller
Setting this bit to 1 forces the device to log data into the nonvolatile fault log. Once set, the
device clears this bit when the action is completed. The host must set again for subsequent
action. If an error occurs during this action, the device sets the CML bit in STATUS_BYTE
and STATUS_WORD; no bits are set in STATUS_CML.
Setting this bit to 1 forces the device to clear the nonvolatile fault log by writing FFh to all
byte locations. Once set, the device clears this bit when the action is completed. The host
must set again for subsequent action. If an error occurs during this action, the device sets
the CML bit in STATUS_BYTE and STATUS_WORD; no bits are set in STATUS_CML.
0 = ALERT disabled (device does not respond to ARA).
1 = ALERT enabled (device responds to ARA and ARA must be used).
This bit always returns a 0.
This bit must be set, then cleared and set again within 8ms for a soft reset to occur.
These bits always return a 0.
These bits select the threshold for the expected RPM in the fan health monitor.
0 = ADC5 voltage sense disabled.
1 = ADC5 voltage sense enabled (overridden if temp sense enabled)
0 = ADC4 voltage sense disabled.
1 = ADC4 voltage sense enabled (overridden if temp sense enabled)
0 = ADC3 voltage sense disabled.
1 = ADC3 voltage sense enabled (overridden if temp sense enabled)
0 = ADC2 voltage sense disabled.
1 = ADC2 voltage sense enabled (overridden if temp sense enabled)
0 = ADC1 voltage sense disabled.
1 = ADC1 voltage sense enabled (overridden if temp sense enabled)
0 = ADC0 voltage sense disabled.
1 = ADC0 voltage sense enabled (overridden if temp sense enabled)
0
0
1
1
BIT
0
1
0
1
GREEN
< 10%
< 10%
< 15%
< 15%
MEANING
ORANGE
< 15%
< 20%
< 20%
< 25%
MFR_MODE (D1h)
> 15%
> 20%
> 20%
> 25%
RED
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