MAX31785 MAXIM [Maxim Integrated Products], MAX31785 Datasheet - Page 27

• Manufacturer Part Number: MAX31785
• Description: 6-Channel Intelligent Fan Controller
• Manufacturer: MAXIM [Maxim Integrated Products]

A summary of the PMBus commands supported by the device are described in the following sections.
The device can control up to six fans, up to 11 temperature sensors, and measure up to six remote voltages using one
PMBus (I
voltage fan is affected by all the PMBus commands shown in Table 1. Not all commands are supported within each
page. If an unsupported command is received, the CML status bit is set. Some commands are common, meaning that
any selected page has the same effect on and the same response from the device.
Set the PAGE to 255 when it is desired that the following PMBus commands should apply to all pages at the same time.
Table 9. Page Commands
PAGE (DEC)
23 to 254
2
255
10
11
12
13
14
15
16
17
18
19
20
21
22
C) address. Send the PAGE command with data 0 to 22 to select which fan, temperature sensor, or remote
0
1
2
3
4
5
6
7
8
9
Fan Connected to PWM 0
Fan Connected to PWM 1
Fan Connected to PWM 2
Fan Connected to PWM 3
Fan Connected to PWM 4
Fan Connected to PWM 5
Remote Thermal Diode Connected to ADC 0
Remote Thermal Diode Connected to ADC 1
Remote Thermal Diode Connected to ADC 2
Remote Thermal Diode Connected to ADC 3
Remote Thermal Diode Connected to ADC 4
Remote Thermal Diode Connected to ADC 5
Internal Temperature Sensor
Remote I
Remote I
Remote I
Remote I
Remote Voltage Connected to ADC 0
Remote Voltage Connected to ADC 1
Remote Voltage Connected to ADC 2
Remote Voltage Connected to ADC 3
Remote Voltage Connected to ADC 4
Remote Voltage Connected to ADC 5
Reserved
Applies to All Pages
6-Channel Intelligent Fan Controller
2
2
2
2
C Temperature Sensor with Address 0
C Temperature Sensor with Address 1
C Temperature Sensor with Address 2
C Temperature Sensor with Address 3
ASSOCIATED CONTROL
PMBus Commands
PAGE (00h)
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