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ADM1029ARQZ-R7 数据表(PDF) 34 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) 34 Page - ON Semiconductor

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STATUS REGISTERS
Register 00h – Status Register (Power-On Default 00h)
Bit
Name
R/W
Description
0
INT
R
This bit is set to 1 when the device is asserting INT low. This bit is the logical
OR of several bits in other registers and is cleared when these bits are cleared.
1
CFAULT_in
R
This bit is set to 1 when the device is receiving CFAULT low from another device.
2
CFAULT_out
R
This bit is set to 1 when the device is asserting CFAULT low. This bit is
the logical OR of several bits in other registers and is cleared when these
bits are cleared.
3
In Alarm_speed
R
This bit is set to 1 when either fan is running at Alarm Speed. This bit is the
logical OR of several bits in other registers and is cleared when these bits are
cleared.
4
In Hot-Plug Speed
R
This bit is set to 1 when either fan is running at Hot-Plug Speed. This bit is
the logical OR of several bits in other registers and is cleared when these bits
are cleared.
5
GPIO/AIN Event
R
This bit is a logical OR of Bits 1, 3, 6, and 7 in the GPIO Behavior Registers
at 28h to 2Eh while they are configured as inputs, and Bit 7 in the AIN
Behavior Registers at 50h and 51h. It will be set when any of these bits are set
and cleared when all of these bits are cleared.
6
Hot Plug/Fan Fault
R
This bit is a logical OR of Bits 1, 3, 6, and 7 in the Fan Status Registers at
10h and 11h. It will be set when any of these bits are set and cleared when all
of these bits are cleared.
7
Thermal Event
R
This bit is a logical OR of Bit 7 in the Temp Fault Action Registers at 40h,
41h, and 42h. It will be set when any of these bits are set and cleared when all
of these bits are cleared.
Register 02h – Fan Supported By Controller (Power-On Default 03h)
Bit
Name
R/W
Description
0
Fan 1 = 1
R
This bit set to 1 means the ADM1029 can support Fan 1.
1
Fan 2 = 1
R
This bit set to 1 means the ADM1029 can support Fan 2.
2
Reserved
R
Unused. Will read back 0.
3
Reserved
R
Unused. Will read back 0.
4
Reserved
R
Unused. Will read back 0.
5
Reserved
R
Unused. Will read back 0.
6
Reserved
R
Unused. Will read back 0.
7
Reserved
R
Unused. Will read back 0.
Register 03h – Fans Supported In System (Power-On Default 0000 00?1)
Bit
Name
R/W
Description
0
Fan 1 = 1
R/W
Indicates that Fan 1 is being used. Set to 1 on Power-up, but can be over-
written by software.
1
Fan 2 = ?
R/W
Indicates that Fan 2 is being used. Set by Pin 18 (TMIN/INSTALL) on
Power-up, but can be overwritten by software.
2
Reserved
R
Unused. Will read back 0.
3
Reserved
R
Unused. Will read back 0.
4
Reserved
R
Unused. Will read back 0.
5
Reserved
R
Unused. Will read back 0.
6
Reserved
R
Unused. Will read back 0.
7
Reserved
R
Unused. Will read back 0.
NOTE
Question marks on this and following pages indicate bit settings that depend on the state of certain pins on power-up.
ADM1029



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