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ADM1030ARQ View Datasheet(PDF) - ON Semiconductor

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ADM1030ARQ Datasheet PDF : 29 Pages
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ADM1030
Table XVI. Register 0x02 Status Register 1 Power-On Default = 00H
Bit Name
R/W
Description
0
Alarm Speed
Read Only
This bit is set to “1” when fan is running at alarm speed. Once read, this bit
will not reassert on next monitoring cycle, even if the fan is still running at
alarm speed. This gives an indication as to when the fan is running full-speed,
such as in a THERM condition.
1
Fan Fault
Read Only
This bit is set to “1” if fan becomes stuck or is running under speed. Once
read, this bit will reassert on next monitoring cycle, if the fan failure condi-
tion persists.
2
Remote Temp High
Read Only
“1” indicates Remote high temperature limit has been exceeded. If the tem-
perature is still outside the Remote Temp High Limit, this bit will reassert on
next monitoring cycle.
3
Remote Temp Low
Read Only
“1” indicates Remote low temperature limit exceeded (below). If the tempera-
ture is still outside the Remote Temp Low Limit, this bit will reassert on next
monitoring cycle.
4
Remote Temp Therm Read Only
“1” indicates Remote temperature Therm limit has been exceeded. This bit is
cleared on a read of Status Register 1. Once cleared, this bit will not get reas-
serted even if the THERM condition persists.
5
Remote Diode Error
Read Only
This bit is set to “1” if a short or open is detected on the remote temperature
channel. This test is only done on power-up, and if set to 1 cannot be cleared
by reading the Status Register 1.
6
Loc Temp High
Read Only
“1” indicates Local Temp High Limit has been exceeded. If the temperature
is still outside the Local Temp High Limit, this bit will reassert on next
monitoring cycle.
7
Loc Temp Low
Read Only
“1” indicates Local Temp Low Limit has been exceeded (below). If the tem-
perature is still outside the Local Temp Low Limit, this bit will reassert on
next monitoring cycle.
Table XVII. Register 0x03 Status Register 2 Power-Up Default = 00H
Bit Name
R/W
Description
0
Unused
Read Only Unused.
1
Unused
Read Only Unused.
2
Unused
Read Only Unused.
3
Unused
Read Only Unused.
4
Unused
Read Only Unused.
5
Unused
Read Only Unused.
6
Loc Therm Read Only “1” indicates Local temperature Therm limit has been exceeded. This bit clears on a read
of Status Register 2. Once cleared, this bit will not be reasserted even if the THERM con-
dition persists.
7
THERM
Read Only Set to “1” when THERM is pulled low as an input. This bit clears on a read of Status
Register 2. The fan also runs full-speed.
Table XVIII. Register 0x06 Extended Temperature Resolution Power-On Default = 00H
Bit Name
R/W
Description
<2:0> Remote Temp Read Only
<5:3> Reserved
Read Only
<7:6> Local Temp Read Only
Holds extended temperature resolution bits for Remote Temperature channel.
Reserved.
Holds extended temperature resolution bits for Local Temperature channel.
REV. A
Rev. 2 | Page 25 of 29 | www.onsemi.com
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