參數(shù)資料
型號(hào)： ADT7460
廠商： Analog Devices, Inc.
英文描述： dB COOL?? Remote Thermal Controller and Fan Controller
中文描述： 分貝很酷吧？？遠(yuǎn)程熱控制器和風(fēng)扇控制器
文件頁(yè)數(shù)： 43/48頁(yè)
文件大小： 695K
代理商： ADT7460
REV. 0
ADT7460
–43–
Table XXX. Register 0x73 – Configuration Register 2 (Power-On Default = 0x00)
Bit
0
Name
AIN1
R/W
*
Read/Write
Description
AIN1 = 0, Speed of 3-wire fans measured using the TACH output from the fan.
AIN1 = 1, Pin 6 is reconfigured to measure the speed of 2-wire fans using an external
sensing resistor and coupling capacitor.
AIN voltage threshold is set via Configuration Register 4 (Reg. 0x7D).
AIN2 = 0, Speed of 3-wire fans measured using the TACH output from the fan.
AIN2 = 1, Pin 7 is reconfigured to measure the speed of 2-wire fans using an external
sensing resistor and coupling capacitor.
AIN voltage threshold is set via Configuration Register 4 (Reg. 0x7D).
AIN3 = 0, Speed of 3-wire fans measured using the TACH output from the fan.
AIN3 = 1, Pin 4 is reconfigured to measure the speed of 2-wire fans using an external
sensing resistor and coupling capacitor.
AIN voltage threshold is set via Configuration Register 4 (Reg. 0x7D).
AIN4 = 0, Speed of 3-wire fans measured using the TACH output from the fan.
AIN4 = 1, Pin 9 is reconfigured to measure the speed of 2-wire fans using an external
sensing resistor and coupling capacitor.
AIN voltage threshold is set via Configuration Register 4 (Reg. 0x7D).
AVG = 1, Averaging on the temperature and voltage measurements is turned off. This
allows measurements on each channel to be made much faster.
ATTN = 1, the ADT7460 removes the attenuators from the 2.5 V input. The input can
be used for other functions such as connecting up external sensors.
CONV = 1, the ADT7460 is put into a single-channel ADC Conversion Mode. In this
mode, the ADT7460 can be made to read continuously from one input only, e.g.,
Remote 1 Temperature. It is also possible to start ADC conversions using an external
clock on Pin 6 by setting Bit 2 of Test Register 2 (Reg. 0x7F). This mode could be
useful if, for example, you wanted to characterize/profile CPU temperature quickly. The
appropriate ADC channel is selected by writing to Bits <7:5> of TACH1 Min High
Byte Register (0x55).
Bits <7:5> Reg 0x55
000
010
101
110
111
SHDN = 1, ADT7460 goes into Shutdown Mode. All PWM outputs assert low (or high
depending on state of INV bit) to switch off all fans. The PWM Current Duty Cycle
registers read 0x00 to indicate that the fans are not being driven.
1
AIN2
Read/Write
2
AIN3
Read/Write
3
AIN4
Read/Write
4
AVG
Read/Write
5
ATTN
Read/Write
6
CONV
Read/Write
Channel Selected
2.5 V
V
CC
(3.3 V)
Remote 1 Temp
Local Temp
Remote 2 Temp
7
SHDN
Read/Write
*
This register becomes read-only when the Configuration Register 1 Lock bit is set to 1. Any further attempts to write to this register will have no effect.
相關(guān)PDF資料
PDF描述
ADT7460ARQ dB COOL?? Remote Thermal Controller and Fan Controller
ADT7461 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR-REEL 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR-REEL7 【1∑C Temperature Monitor with Series Resistance Cancellation
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