ADT7460 Analog Devices, Inc., ADT7460 Datasheet - Page 48

• Manufacturer Part Number: ADT7460
• Description: Dbcool? Remote Thermal Controller And Fan Controller
• Manufacturer: Analog Devices, Inc.

ADT7460
Table 72. Register 0x75—Interrupt Mask Register 2 (Power-On Default = 0x00
Bit
0
1
2
3
4
5
6
7
Table 73. Register 0x76—Extended Resolution Register 1
Bit
<1:0>
<3:2>
<5:4>
<7:6>
If this re
Table 74. Register
Bit
<1:0>
<3:2>
<5:4>
<7:6>
If this re ister is read, t is register and
Table 75. Register 0x78—Configura
Bit
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
This r
e
ffect.
egister becomes read-only when the Configuration Register 1 lock bit is set to 1. Further attempts to write to this register have no
gister is
g
Name
ALERT
THERM
E
BOOST
F
DC1
DC2
DC3
DC4
Name
RES
OVT
FAN1
FAN2
FAN3
F4P
D1
D2
Name
2.5V
RES
V
RES
Name
RES
TDM1
LTMP
TDM2
NABLE
AST
CC
read, t
Read-Only
R/W
Read/Write
Read-Only
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
R/W
Read/Write
Rea
Rea -Only
R/W
Read-Only
Read/Write
Read-Only
Read/Write
0x77—Extended Resolution
R/W
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
d-Only
d
his re
h
gister and
Reserved for future use.
A 1 masks SMBALERT for overtemperature THERM conditions.
A 1 masks SMBALERT for a Fan 1 fault.
A 1 masks SMBALERT for a Fan 2 fault.
A 1 masks SMBALERT for a Fan 3 fault.
A 1 masks SMBALERT for a Fan 4 fault. If the TACH4 pin is being used as the THERM input, this bit masks
SMBALERT for a THERM timer event.
A 1 masks SMBALERT for a diode open or short on Remote 1 channel.
A 1 masks SMBALERT for a diode open or short on Remote 2 channel.
Description
Description
2.5 V LSBs. Holds the 2 LSBs of the 10-bit 2.5 V measurement.
Reserved for future use.
V
Reserved for future use.
Description
Reserved for future use.
Re
Lo
Remote 2 Temperature LSBs. Holds the 2 LSBs of the 10-bit Remote 2 temperature measurement.
De
ALERT = 1, Pin 5 (PWM2/SMBALERT) is configured as an SMBALERT interrupt output to indicate out-of-
lim
TH
W
triggered to time how long THERM has been asserted for.
BOOST = 1, assertion of THERM causes all fans to run at 100% duty cycle for fail-safe cooling.
FA
from once per second, to once every 250 ms (4×).
DC1 = 1 enables TACH measurements to be continuously made on TACH1.
DC2 = 2 enables TACH measurements to be continuously made on TACH2.
DC3 = 1 enables TACH measurements to be continuously made on TACH3.
DC4 = 1 enables TACH measurements to be continuously made on TACH4.
CC
tion Register 3 (Power-On Default = 0x00)
hen THE
cal Temperature LSBs. Holds the 2 LSBs of the
mote 1 Temperature LSBs. Holds the 2 LSBs of the 10-bit Remote 1 temperature measurement.
ST = 1 enables fas
ERM ENABLE = 1 enables THERM monitoring functionality on Pin 9 when it is configured as THERM.
scription
it error condition
LSBs. Holds the 2 LSBs of the 10-bit V
the registers
the reg
RM
isters holding the MSB of each reading are frozen until read.
Register
is asserted, fans can be run at full speed (if the BOOST bit is set), or a timer can be
holding the MSB of each reading are frozen unti ead.
s.
t TACH measurements on all channels. This increases the TACH measurement rate
2
Rev. C | Page 48 of 52
CC
measurement.
)
10-bit local temperature measurement.
l r