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| 型号： | ADM1029ARQZ-R7 |
| 厂商： | ON Semiconductor |
| 文件页数： | 39/50页 |
| 文件大小： | 402K |
| 描述： | IC SENSOR 2TEMP/FAN CTRL 24QSOP |
| 产品变化通告： | QSOP 24ld Pkg (MSL) Change 17/Jun/2010 |
| 标准包装： | 1,000 |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 100°C，外部传感器 |
| 精确度： | ±1°C 本地，±3°C 远程 |
| 拓扑： | ADC，风扇控制，寄存器库 |
| 输出类型： | 开路漏极 |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 包装： | 带卷 (TR) |
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ADM1029
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39
Table 30. REGISTER 48H, 49H, 4AH TEMP X* COOLING ACTION (POWER-ON DEFAULT 00H)
Bit
Name
R/W
Description
0
Fan 1 = 0
R/W
If a Temp x* out-of-limit event is generated such that fans should be
driven at Alarm Speed, Fan 1 will be set to this speed when this bit is set.
If no Temp x* out-of-limit event is present, Fan 1 will be set to the speed
determined by the automatic fan speed control circuit as a result of
temperature measurements on the Temp x* channel when this bit is set. If
this bit is not set, Temp x* temperature measurements will have no effect
on the speed of Fan 1.
1
Fan 2 = 0
R/W
If a Temp x* out-of-limit event is generated such that fans should be
driven at Alarm Speed, Fan 2 will be set to this speed when this bit is set.
If no Temp x* out-of-limit event is present, Fan 2 will be set to the speed
determined by the automatic fan speed control circuit as a result of
temperature measurements on the Temp x* channel when this bit is set. If
this bit is not set, Temp x temperature measurements have no effect on
the speed of Fan 2. While in theory it is possible, through setting of Bits 0
and 1 in registers 48h to 4Ah, to have any temperature channel controlling
any fan, in practice this is not feasible. A subset of possibilities only are
supported as follows:
Case 1: TDM1 controlling Fan 1
(Bit 0 in 49h set and/or
TDM2 controlling Fan 2
Bit 1 in 4Ah set, only)
Case 2: Local controlling Fan 1 and/or Fan 2 (Bits 0, 1 in 48h only set)
Case 3: TDM1 controlling Fan 1 and/or Fan 2 (Bits 0, 1 in 49h only set)
Case 4: TDM2 controlling Fan 1 and/or Fan 2 (Bits 0, 1 in 4Ah only set)
Case 5: Fan 1 and/or Fan 2 set to max speed (Bits 0, 1 in 48h, 49h,
(Default) determined by
temperature 4Ah all set)
measurements on all
three channels.
Other:
If Bits 0,1 in registers 48h, 49h, 4Ah are set inconsistent with
these cases, fans will run at the speeds determined by the
normal speed registers.
2
Reserved
R
Unused. Will read back 0.
3
Reserved
R
Unused. Will read back 0.
4
Reserved
R
Unused. Will read back 0.
5
Reserved
R
Unused. Will read back 0.
6
Reserved
R
Unused. Will read back 0.
7
Reserved
R
Unused. Will read back 0.
* x denotes the number of the temperature channel. Register 48h is for the Local temperature channel. 49h is for Remote 1 Temp (D1), 4Ah
is for Remote 2 Temp (D2).
Table 31. REGISTER 80H, 81H, 82H TEMP X* T
MIN
(POWER-ON DEFAULT 001??000)
Bit
Name
R/W
Description
<7:0>
Temp x* TMIN
R/W
This register contains the minimum temperature value for automatic fan
speed control based on the Temp x* temperature. On power-up Pin 18 is
sampled by the ADC to determine the default value for Temp x* T
MIN
. If
Pin 18 is strapped to GND or V
CC
, this register defaults to 32癈, but
Automatic Fan Speed Control is disabled. There are eight strappable
options on Pin 18. These options are used to set Temp x* T
MIN
and the
Install bit in the Config Register (Reg 01h, Bit 0). The options are as
follows:
ADC MSBs R1
R2
Install Temp x* T
MIN
111
0
?/DIV>
1
Disabled
101
18 kW
82 kW
1
48癈
110
22 kW
47 kW
1
40癈
100
12 kW
15 kW
1
32癈
011
15 kW
12 kW
0
32癈
010
47 kW
22 kW
0
40癈
001
82 kW
18 kW
0
48癈
000
?/DIV>
0
0
Disabled
* x denotes the number of the temperature channel. Register 80h is for the Local temperature channel, 81h is for Remote 1 Temp (D1), 82h
is for Remote 2 Temp (D2).
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