參數(shù)資料
型號(hào): ADM1030ARQ
廠商: ON SEMICONDUCTOR
元件分類: 溫度/濕度傳感器
英文描述: DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT
封裝: MO-137AB, QSOP-16
文件頁(yè)數(shù): 7/29頁(yè)
文件大?。?/td> 556K
代理商: ADM1030ARQ
REV. A
ADM1030
–15–
RELEVANT REGISTERS FOR AUTOMATIC FAN SPEED
CONTROL MODE
Register 0x00 Configuration Register 1
<7>
Logic 1 selects Automatic Fan Speed Control, Logic 0
selects software control (Default = 1).
<6:5> 00 = Remote Temperature controls Fan
11 = Fastest Calculated Speed controls the fan when
Bit 7 = Logic 1.
Register 0x20 Fan Characteristics Register 1
<2:0> Fan 1 Spin-Up Time
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 Frequency Driving the Fan
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 N; defines the lowest fan speed that can be
measured by the device.
00 = 1: Lowest Speed = 2647 RPM
01 = 2: Lowest Speed = 1324 RPM
10 = 4: Lowest Speed = 662 RPM
11 = 8: Lowest Speed = 331 RPM
Register 0x22 Fan Speed Configuration Register
<3:0> Min Speed: This nibble contains the speed at which the
fan will run when the temperature is at TMIN. The default
is 0x05, meaning that the fan will run at 33% duty cycle
when the temperature is at TMIN.
Register 0x24 Local Temp TMIN/TRANGE
<7:3> Local Temp TMIN. These bits set the temperature at
which the fan will turn on when under Auto Fan Speed
Control. TMIN can be programmed in 4 C increments.
00000 = 0 C
00001 = 4 C
00010 = 8 C
00011 = 12 C
|
01000 = 32 C (Default)
|
11110 = 120 C
11111 = 124 C
<2:0> Local Temperature TRANGE. This nibble sets the tem-
perature range over which Automatic Fan Speed Control
takes place.
000 = 5 C
001 = 10 C
010 = 20 C
011 = 40 C
100 = 80 C
Register 0x25 Remote Temperature TMIN/TRANGE
<7:3> Remote Temperature TMIN. Sets the temperature at
which the fan will switch on based on Remote Tempera-
ture Readings.
00000 = 0 C
00001 = 4 C
00010 = 8 C
00011 = 12 C
|
01100 = 48 C
|
11110 = 120 C
11111 = 124 C
<2:0> Remote Temperature TRANGE. This nibble sets the tem-
perature range over which the fan will be controlled based
on Remote Temperature readings.
000 = 5 C
001 = 10 C
010 = 20 C
011 = 40 C
100 = 80 C
Rev. 2 | Page 15 of 29 | www.onsemi.com
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