adm1027 Analog Devices, Inc., adm1027 Datasheet - Page 44

• Manufacturer Part Number: adm1027
• Description: Dbcool? Remote Thermal Controller And Voltage Monitor
• Manufacturer: Analog Devices, Inc.

ADM1027
Bit
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
Bit
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
Name
Name
2.5 V
V
V
5 V
R1T
LT
R2T
OOL
12 V
OVT
FAN1
FAN2
FAN3
FAN4
D1
D2
CCP
CC
Table XI. Register 0x42 – Interrupt Status Register 2 (Power-On Default = 0x00)
Table X. Register 0x41 – Interrupt Status Register 1 (Power-On Default = 0x00)
Read/Write
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read/Write
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Read-Only
Description
A 1 indicates the 2.5 V high or low limit has been exceeded. This bit is cleared on a read
of the status register only if the error condition has subsided.
A 1 indicates the V
of the status register only if the error condition has subsided.
A 1 indicates the V
of the status register only if the error condition has subsided.
A 1 indicates the 5 V high or low limit has been exceeded. This bit is cleared on a read of
the status register only if the error condition has subsided.
A 1 indicates the Remote 1 low or high temp limit has been exceeded. This bit is
cleared on a read of the status register only if the error condition has subsided.
A 1 indicates the local low or high temp limit has been exceeded. This bit is cleared on
a read of the status register only if the error condition has subsided.
A 1 indicates the Remote 2 low or high temperature limit has been exceeded. This bit is
cleared on a read of the status register only if the error condition has subsided.
A 1 indicates that an out-of-limit event has been latched in Status Register 2. This bit is
a logical OR of all status bits in Status Register 2. Software can test this bit in isolation to
determine whether any of the voltage, temperature, or fan speed readings represented by
Status Register 2 are out-of-limit. This saves the need to read Status Register 2 every
interrupt or polling cycle.
Description
A 1 indicates the 12 V high or low limit has been exceeded. This bit is cleared on a read
of the status register only if the error condition has subsided.
A 1 indicates that one of the THERM overtemperature limits has been exceeded. This bit
is cleared on a read of the status register when the temperature drops below THERM – 4∞C
A 1 indicates that Fan 1 has dropped below minimum speed or has stalled. This bit is
NOT set when the PWM 1 output is off.
A 1 indicates that Fan 2 has dropped below minimum speed or has stalled. This bit is
NOT set when the PWM 2 output is off.
A 1 indicates that Fan 3 has dropped below minimum speed or has stalled. This bit is
NOT set when the PWM 3 output is off.
A 1 indicates that Fan 4 has dropped below minimum speed or has stalled. This bit is
NOT set when the PWM 3 output is off.
A 1 indicates either an open or short circuit on the Thermal Diode 1 inputs.
A 1 indicates either an open or short circuit on the Thermal Diode 2 inputs.
CCP
CC
–44–
high or low limit has been exceeded. This bit is cleared on a read
high or low limit has been exceeded. This bit is cleared on a read
REV. A