参数资料
型号: ADM1030ARQZ
厂商: ANALOG DEVICES INC
元件分类: 温度/湿度传感器
英文描述: DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT
封装: MO-137AB, QSOP-16
文件页数: 19/28页
文件大小: 495K
代理商: ADM1030ARQZ
REV. A
ADM1030
–26–
Table XIX. Register 0x20 Fan Characteristics Register 1 Power-On Default = 5DH
Bit
Name
R/
W
Description
<2:0>
Fan 1 Spin-up
Read/Write
These bits contain the Fan Spin-up time to allow the fan to overcome its own
inertia.
000 = 200 ms
001 = 400 ms
010 = 600 ms
011 = 800 ms
100 = 1 sec
101 = 2 secs (Default)
110 = 4 secs
111 = 8 secs
<5:3>
PWM 1 Frequency
Read/Write
These bits allow programmability of the nominal PWM output frequency
driving the fan. (Default = 31 Hz.)
000 = 11.7 Hz
001 = 15.6 Hz
010 = 23.4 Hz
011 = 31.25 Hz (Default)
100 = 37.5 Hz
101 = 46.9 Hz
110 = 62.5 Hz
111 = 93.5 Hz
<7:6>
Speed Range
Read/Write
These bits contain the Speed Range, N.
00 = 1
(Fail Speed = 2647 RPM)
01 = 2
(Fail Speed = 1324 RPM)
10 = 4
(Fail Speed = 662 RPM)
11 = 8
(Fail Speed = 331 RPM)
Table XX. Register 0x22 Fan Speed Config Register Power-On Default = 05H
Bit
Name
R/
W
Description
<3:0>
Normal/Min Spd 1
Read/Write
This nibble contains the normal speed value for the fan. When in Automatic
Fan Speed Control Mode, this nibble contains the minimum speed at which
the fan will run. Default is 0x05 for 33% PWM duty cycle. (See Table VII.)
<7:4>
Unused
Unused.
Table XXI. Register 0x23 Fan Filter Register Power-On Default = 50H
Bit
Name
R/
W
Description
<7>
Spin-Up Disable
Read/Write
When set to 1, disables fan spin-up.
<6:5>
Ramp Rate
Read/Write
These bits set the ramp rate for the PWM output.
00 = 1
01 = 2
10 = 4
11 = 8
<4:2>
ADC Sample Rate
Read/Write
These bits set the sampling rate for the ADC.
000 = 87.5 Hz 0.0625 Updates/sec
001 = 175 Hz 0.125 Updates/sec
010 = 350 Hz 0.25 Updates/sec
011 = 700 Hz 0.5 Updates/sec
100 = 1.4 kHz (Default) 1 Update/sec
101 = 2.8 kHz 2 Updates/sec
110 = 5.6 kHz 4 Updates/sec
111 = 11.2 kHz 8 Updates/sec
<1>
Unused
Read/Write
Unused.
<0>
Fan Filter En
Read/Write
Setting this bit to 1 enables filtering of the PWM_OUT signal.
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