EVAL-ADT7467EBZ ON Semiconductor, EVAL-ADT7467EBZ Datasheet - Page 73

• Manufacturer Part Number: EVAL-ADT7467EBZ
• Description: BOARD EVALUATION FOR ADT7467
• Manufacturer: ON Semiconductor
• Series: dBCool®r

Specifications of EVAL-ADT7467EBZ

• Sensor Type: Temperature
• Sensing Range: -40°C ~ 120°C
• Interface: SMBus (2-Wire/I²C)
• Sensitivity: ±1.5°C
• Voltage - Supply: 3 V ~ 5.5 V
• Embedded: No
• Utilized Ic / Part: ADT7467
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 51. Register 0x74—Interrupt Mask 1 Register (Power-On Default = 0x00)
Bit
<1>
<2>
<4>
<5>
<6>
<7>
Table 52. Register 0x75—Interrupt Mask 2 Register (Power-On Default = 0x00)
Bit
<1>
<2>
<3>
<4>
<5>
<6>
<7>
Table 53. Register 0x76—Extended Resolution Register 1 (Power-On Default = 0x00)
Bit
<3:2>
<5:4>
1
Table 54. Register 0x77—Extended Resolution Register 2 (Power-On Default = 0x00)
Bit
<3:2>
<5:4>
<7:6>
1
Table 55. Register 0x78—Configuration Register 3 (Power-On Default = 0x00)
Bit
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
1
If this register is read, this register and the registers holding the MSB of each reading are frozen until read.
If this register is read, this register and the registers holding the MSB of each reading are frozen until read.
This register becomes a read-only register when the Configuration Register 1 LOCK bit is set to 1. Any subsequent attempts to write to this register fail.
Name
V
V
R1T
LT
R2T
OOL
Name
OVT
FAN1
FAN2
FAN3
F4P
D1
D2
Name
ALERT
Enable
THERM
BOOST
FAST
DC1
DC2
DC3
DC4
Name
V
V
CCP
CC
Name
TDM1
LTMP
TDM2
CCP
CC
R/W
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
R/W
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
1
Description
V
V
R1T = 1 masks SMBALERT for out-of-limit conditions on the Remote 1 temperature channel.
LT = 1 masks SMBALERT for out-of-limit conditions on the local temperature channel.
R2T = 1 masks SMBALERT for out-of-limit conditions on the Remote 2 temperature channel.
OOL = 1 masks SMBALERT for any out-of-limit condition in Interrupt Status Register 2.
Description
V
V
Description
OVT = 1 masks SMBALERT for overtemperature THERM conditions.
FAN1 = 1 masks SMBALERT for a Fan 1 fault.
FAN2 = 1 masks SMBALERT for a Fan 2 fault.
FAN3 = 1 masks SMBALERT for a Fan 3 fault.
F4P = 1 masks SMBALERT for a Fan 4 fault. If the TACH4 pin is used as the THERM input, this bit masks SMBALERT
for a THERM timer event.
D1 = 1 masks SMBALERT for a diode open or short on a Remote 1 channel.
D2 = 1 masks SMBALERT for a diode open or short on a Remote 2 channel.
Description
Remote 1 temperature LSBs. Holds the 2 LSBs of the 10-bit Remote 1 temperature measurement.
Local temperature LSBs. Holds the 2 LSBs of the 10-bit local temperature measurement.
Remote 2 temperature LSBs. Holds the 2 LSBs of the 10-bit Remote 2 temperature measurement.
Description
ALERT = 1, Pin 5 (PWM2/SMBALERT) is configured as an SMBALERT interrupt output to indicate out-of-limit error
conditions.
THERM Enable = 1 enables THERM timer monitoring functionality on Pin 9. Also determined by Bit 0 and Bit 1
(Pin 9 Func) of Configuration Register 4. When THERM is asserted, the fans run at full speed if the fans are
running and the boost bit is set. Alternatively, THERM can be programmed so that a timer is triggered to time
how long THERM has been asserted.
When THERM is an input and BOOST = 1, assertion of THERM causes all fans to run at the maximum
programmed duty cycle for fail-safe cooling.
FAST = 1 enables fast TACH measurements on all channels. This increases the TACH measurement rate from
once per second to once every 250 ms (4 ×).
DC1 = 1 enables TACH measurements to be continuously made on TACH1. Fans must be driven by dc. Setting
this bit prevents pulse stretching, because it is not required for dc-driven motors.
DC2 = 1 enables TACH measurements to be continuously made on TACH2. Fans must be driven by dc. Setting
this bit prevents pulse stretching, because it is not required for dc-driven motors.
DC3 = 1 enables TACH measurements to be continuously made on TACH3. Fans must be driven by dc. Setting
this bit prevents pulse stretching, because it is not required for dc-driven motors.
DC4 = 1 enables TACH measurements to be continuously made on TACH4. Fans must be driven by dc. Setting
this bit prevents pulse stretching, because it is not required for dc-driven motors.
CCP
CC
CCP
CC
= 1 masks SMBALERT for out-of-limit conditions on the V
LSBs. Holds the 2 LSBs of the 10-bit V
= 1 masks SMBALERT for out-of-limit conditions on the V
LSBs. Holds the 2 LSBs of the 10-bit V
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CC
CCP
measurement.
measurement.
1
1
CC
CCP
channel.
channel.
ADT7467