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| 型号： | ADM1031ARQZ-R7 |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 温度/湿度传感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| 封装： | LEAD FREE, QSOP-16 |
| 文件页数： | 17/30页 |
| 文件大小： | 299K |
| 代理商： | ADM1031ARQZ-R7 |
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ADM1031
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Table 13. Value Registers
Address
R/W
Description
0x06
R
Extended Temperature Resolution (see Table 18).
0x08
R/W
Fan 1 Speed. This register contains the value of the Fan 1 tach measurement.
0x09
R/W
Fan 2 Speed. This register contains the value of the Fan 2 tach measurement.
0x0A
R
Local Temperature Value. This register contains the 8 MSBs of the local temperature measurement.
0x0B
R
Remote 1 Temperature Value. This register contains the 8 MSBs of the Remote 1 temperature reading.
0x0C
R
Remote 2 Temperature Value. This register contains the 8 MSBs of the Remote 2 temperature reading.
0x0D
R/W
Local Temperature Offset. See Table 27. (PowerOn Default = 00h)
0x0E
R/W
Remote 1 Temperature Offset. See Table 28. (PowerOn Default = 00h)
0x0F
R/W
Remote 2 Temperature Offset. See Table 29. (PowerOn Default = 00h)
0x10
R/W
Fan 1 Tach High Limit. This register contains the limit for the Fan 1 tach measurement. Because the tach
circuit counts between pulses, a slow fan results in a large measure value, so exceeding the limit is the
way to detect a slow or stalled fan. (PowerOn Default = FFh)
0x11
R/W
Fan 2 Tach High Limit. This register contains the limit for the Fan 2 tach measurement. Because the tach
circuit counts between pulses, a slow fan results in a large measured value, so exceeding the limit is the
way to detect a slow or stalled fan. (PowerOn Default = FFh)
0x14
R/W
Local Temperature High Limit (PowerOn Default 60°C)
0x15
R/W
Local Temperature Low Limit (PowerOn Default 0°C)
0x16
R/W
Local Temperature THERM Limit (PowerOn Default 70°C)
0x18
R/W
Remote 1 Temperature High Limit (PowerOn Default 80°C)
0x19
R/W
Remote 1 Temperature Low Limit (PowerOn Default 0°C)
0x1A
R/W
Remote 1 Temperature THERM Limit (PowerOn Default 100°C)
0x1C
R/W
Remote 2 Temperature High Limit (PowerOn Default 80°C)
0x1D
R/W
Remote 2 Temperature Low Limit (PowerOn Default 0°C)
0x1E
R/W
Remote 2 Temperature THERM Limit (PowerOn Default 100°C)
Table 14. Register 0y00 Configuration Register 1 PowerOn Default = 90H
Bit
Name
R/W
Description
0
MONITOR
R/W
Setting this bit to a “1” enables monitoring of temperature and enables measurement
of the fan tach signals. (Powerup Default=0)
1
INT Enable
R/W
Setting this bit to a “1” enables the INT output. 1= Enabled 0= Disabled
(Powerup Default=0)
2
TACH/AIN
R/W
Clearing this bit to “0” selects digital fan speed measurement via the TACH pins.
Setting this bit to “1” configures the TACH pins as analog inputs that can measure the
speed of 2wire fans via a sense resistor. (Powerup Default=0)
3
PWM Invert
R/W
Setting this bit to “1” inverts the PWM signal on the output pins. (Powerup Default=0)
4
FAN_FAULT Enable
R/W
Logic 1 enables FAN_FAULT pin; Logic 0 disables FAN_FAULT output.
(Powerup Default=1)
65
PWM Mode
R/W
These two bits control the behavior of the fans in auto fan speed control mode.
00 = Remote Temp 1 controls Fan 1; Remote Temp 2 controls Fan 2.
01 = Remote Temp 1 controls Fan 1 and Fan 2.
10 = Remote Temp 2 controls Fan 1 and Fan 2.
11 = Max of Local Temp and Remote Temp 1 and 2 drives Fans 1 and 2.
These two bits have the following effect in software control mode.
00 = Program PWM duty cycles for Fans 1 and 2.
11 = Program RPM Speeds for Fans 1 and 2.
7
Auto/SW Ctrl
R/W
Logic 1 selects automatic fan speed control; Logic 0 selects SW control. (Powerup
Default = 1). When under software control, PWM duty cycle or RPM values can be
programmed for each fan.
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