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參數(shù)資料
| 型號： | ADT7466 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | dBCool Remote Thermal Controller and Voltage Monitor |
| 中文描述： | dBCool遠(yuǎn)程熱控制器和電壓監(jiān)視器 |
| 文件頁數(shù)： | 41/48頁 |
| 文件大?。?/td> | 1269K |
| 代理商： | ADT7466 |
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ADT7466
THERM Limit
If any temperature measured exceeds its THERM limit, both DRIVE outputs drive their fans at maximum output. This is a failsafe
mechanism incorporated to cool the system in the event of a critical overtemperature. It also ensures some level of cooling in the event
that software or hardware locks up. If set to 0x00, this feature is disabled. The DRIVE output remains at 0xFF until the temperature drops
below THERM limit hysteresis. If the THERM pin is programmed as an output, exceeding these limits by 0.25°C can cause the THERM
pin to assert low as an output.
Rev. 0 | Page 41 of 48
These registers become read only when the Configuration Register 1 lock bit is set to 1. Additional attempts to write to these registers
have no effect.
Table 49. THERM Limit Registers
Register Address
Read/Write
Description
0x1F
Read/Write
AIN1/TH1REM2 THERM limit.
0x20
Read/Write
AIN2(TH2) THERM limit.
0x21
Read/Write
Remote 1 THERM limit.
0x22
Read/Write
Local THERM limit.
Temperature Offset
These registers contain an 8-bit, twos complement offset value that is automatically added to or subtracted from the temperature reading
to compensate for any systematic errors such as those caused by noise pickup. LSB value = 1°C.
Power-On Default
0x64 (100°C)
0x64 (100°C)
0x64 (100°C)
0x64 (100°C)
This register becomes read only when the Configuration Register 1 lock bit is set to 1. Additional attempts to write to this register have no
effect.
Table 50. Temperature Offset Registers
Register Address
Read/Write
Description
0x24
Read/Write
AIN1(TH1)/REM2 offset.
0x25
Read/Write
AIN2(TH2) offset.
0x26
Read/Write
Remote 1 offset.
0x27
Read/Write
Local offset.
TMIN
These registers contain the TMIN temperatures for automatic fan control (AFC). These are the temperatures above which the fan starts to
operate. The data format is either binary or offset binary, the same as the temperature reading, depending on which option is chosen by
setting or clearing Bit 7 of Configuration Register 1.
Power-On Default
0x00
0x00
0x00
0x00
These registers become read only when the Configuration Register 1 lock bit is set to 1. Additional attempts to write to these registers
have no effect.
Table 51. TMIN Registers
Register Address
Read/Write
Description
0x28
Read/Write
AIN1(TH1)/REM2 T
MIN
.
0x29
Read/Write
AIN2(TH2) T
MIN
.
0x2A
Read/Write
Remote 1 T
MIN
.
0x2B
Read/Write
Local T
MIN
.
Power-On Default
0x5A (90°C)
0x5A (90°C)
0x5A (90°C)
0x5A (90°C)
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