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ADM1029ARQZ-R7 数据表(PDF) 43 Page - ON Semiconductor

部件名 ADM1029ARQZ-R7
功能描述  Dual PWM Fan Controller and Temperature Monitor for High Availability Systems
PDF  50 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

ADM1029ARQZ-R7 数据表(HTML) 43 Page - ON Semiconductor

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ADM1029
Register 18h, 19h – Fan x
* Fault Action (Power-On Default BFh)
Bit
Name
R/W
Description
0
Assert CFAULT on
R/W
If this bit is set, CFAULT will be asserted when there is a fault (Tach or
Fault = 1
Pins 2/23) on Fan x
*.
1
Assert INT on Fault = 1
R/W
If this bit is set, INT will be asserted when there is a fault (Tach or Pins 2
23) on Fan x
*.
2
Assert CFAULT on
R/W
If this bit is set, CFAULT will be asserted when there is a hot unplug event
Hot Unplug = 1
on Fan x
*.
3
Assert INT on
R/W
If this bit is set, INT will be asserted when there is a hot unplug event
Hot Unplug = 1
on Fan x
*.
4
Thermal Override in
R/W
If Bit 4 in Fan x
* Status Register is set then Fan x* will go to Alarm Speed if
Sleep = 1
an overtemperature event is detected as per settings in Temp x
* Fault Action
Registers, while this bit is set.
5
Drive Fault_ on
R/W
If Bit 3 or Bit 6 of Reg 10 is set, drive Pins 2, 23 low if a fault is generated.
Fault_L = 1
6
Hot-Plug Speed on
R/W
When this bit is set, Fan x
* will go to Hot-Plug Speed when CFAULT is
CFAULT in = 0
pulled low externally.
7
Alarm on CFAULT = 1
R/W
When this bit is set, Fan x
* will go to Alarm Speed when CFAULT is pulled
low externally.
*“x” denotes the fan number. Register 18h is for Fan 1 and Register 19h is for Fan 2.
Register 20h, 21h – Fan x
* Event Mask (Power-On Default FFh)
Bit
Name
R/W
Description
0
Fan 1 = 1
R/W
If a fault (Tach or Pins 2/23) is detected on Fan x
*, Fan 1 will be driven to
Alarm Speed when this bit is set.
1
Fan 2 = 1
R/W
If a fault (Tach or Pins 2/23) is detected on Fan x
*, Fan 2 will be driven to
Alarm Speed when this bit is set.
2
Reserved
R
Unused. Will read back 1.
3
Reserved
R
Unused. Will read back 1.
4
Reserved
R
Unused. Will read back 1.
5
Reserved
R
Unused. Will read back 1.
6
Reserved
R
Unused. Will read back 1.
7
Reserved
R
Unused. Will read back 1.
*“x” denotes the fan number. Register 20h is for Fan 1 and Register 21h is for Fan 2.
Register 60h, 61h – Fan x
* Minimum/Alarm Speed (Power-On Default FFh)
Bit
Name
R/W
Description
3–0
Fan x Minimum Speed
R/W
This nibble contains the Normal speed value for Fan x
*. When in automatic
fan this nibble will contain the minimum speed at which Fan x
* will run. The
power-up default for the Min Speed should be 5hex which corresponds to
33% PWM duty cycle.
7–4
Fan x Alarm Speed
R/W
This nibble contains the Alarm speed value for Fan x
*.
*“x” denotes the fan number. Register 60h is for FAN 1 and 61h is for FAN 2.



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