參數(shù)資料
型號(hào)： ADM1033ARQ-REEL
廠商： ANALOG DEVICES INC
元件分類： 溫度/濕度傳感器
英文描述： Thermal Monitor and Fan Speed (RPM) Controller
中文描述： DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT
封裝： MO-137AB, QSOP-16
文件頁(yè)數(shù)： 32/40頁(yè)
文件大?。?/td> 1164K
代理商： ADM1033ARQ-REEL
ADM1033
Address
0x3F\BF
0x40\C0
0x41\C1
0x42\C2
Rev. 0 | Page 32 of 40
R/W
R
R
R
R
Description
Revision Register
Local Temperature
Local Temperature
Remote
Temperature
Remote
Temperature
TACH Period
TACH Period
THERM % On-Time
Status 1
Status 2
Status 3
Bit 7
7
4
12
4
Bit 6
6
3
11
3
Bit 5
5
2
10
2
Bit 4
4
1
9
1
Bit 3
3
0
8
0
Bit 2
2
RES
7
RES
Bit 1
1
RES
6
RES
Bit 0
0
RES
5
RES
Default
0x02
0x00
0x00
0x00
Lockable
N
N
N
N
0x43\C3
R
12
11
10
9
8
7
6
5
0x00
N
0x4A\CA
0x4B\CB
0x4E\CE
0x4F\CF
0x50\D0
0x51\D1
Table 35. Register 0x00, # Bytes/Block Read, Power-On Reset = 0x20, Lock = Y, S/W Reset = Y
Bit
Name
R/W Description
<7:0> # Bytes Block Read
R/W
Block reads are # bytes/block read long. The maximum is 32 bytes, the SMBus transaction limit.
R
R
R
R
R
R
7
15
7
LH
LT
FS
6
14
6
LL
RT
FA
5
13
5
RH
RES
RES
4
12
4
RL
%T
RES
3
11
3
RTH
TA
RES
2
10
2
RES
TS
RES
1
9
1
RES
RES
RES
0
8
0
RES
RES
ALERT
0xFF
0xFF
0x00
0x00
0x00
0x00
N
N
N
N
N
N
Table 36. Register 0x01, Configuration Register 1, Power-On Default = 0x01, Lock = Y, SW Reset = Y
Bit
Name
R/W
Description
7
SW Con
R/W
Set to 1 to have look-up table control the fan speed. Set to 0 to put ADM1033 in software/manual
control mode. Default = 0.
6
Lock Bit
R/W
Set to 1 to prevent the user from writing to the ADM1033 registers. 1 = ADM1033 registers locked.
0 = ADM1033 registers unlocked. Default = 0.
5
SDA Timeout
R/W
1 = SDA timeout enabled. 0 = SDA timeout disabled. Default = 0.
4
SCL Timeout
R/W
1 = SCL timeout enabled. 0 = SDL timeout disabled. Default = 0.
3
Reserved
R/W
Reserved.
2
Enable THERM Timer
R/W
1 = timer enabled, 0 = timer disabled. Enables
THERM
as an input. Default = 0.
1
Averaging Off
R/W
Disables averaging at the slower conversion rates (8 Hz and slower). Averaging is automatically
disabled at the higher (16, 32, and 64) conversion rates. Default = Averaging On = 0.
0
Monitor/STBY
R/W
Set to 1 to enable monitoring of temperature. Set to 0 to disable temperature monitoring. Power-
On Default = 1.
Table 37. Register 0x02, Configuration Register 2, Power-On Default = 0x84, Lock = Y, SW Reset = Y
Bit
Name
R/W
Description
7
Round Robin
R/W
Enables round-robin mode. Set to 0 for single-channel mode. (The ADC converts on only one
channel, which is determined by the channel selector bits.) Default = Round Robin = 1.
<6:5> Reserved
R/W Reserved.
4
Channel Selector
R/W
0 = local temperature measurements, 1 = remote temperature measurements.
3
Reserved
R/W Reserved.
2
Discrete/Linear RPM
R/W
Determines whether the fans run at discrete speeds or whether the fan speed increases with
temperature between the two thresholds. Default = 1 = linear.
1
Boost Disable
R/W
Set to 1 to prevent fans from being boosted, if either THERM temperature or THERM timer limits are
exceeded. Under these conditions, the fans run at the previously calculated speed. Default = 0.
0
SW Reset
R/W
Set this bit to 1 to reset the ADM1033 registers to their default values, excluding the limit registers,
offset registers, and look-up table registers. This bit self-clears. Default = 0.
Table 38. Register 0x03, Configuration Register 3, Power-On Default = 0x44, Lock = Y, SW Reset = Y
Bit
Name
R/W Description
<7:4> Unused
R/W
Reserved.
<3:0> #Poles Fan
R/W
Write the number of poles in the fan to this register. Power-On Default = 4 poles = 100. This value
should be an even number only.
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