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| 型号： | ADM1029ARQZ-R7 |
| 厂商： | ON Semiconductor |
| 文件页数： | 38/50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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38
TEMPERATURE REGISTERS
Table 27. REGISTER 06H TEMP DEVICES INSTALLED (POWER-ON DEFAULT 0000 0??1)
Bit
Name
R/W
Description
0
Local Temp = 1
R
This bit is permanently set to 1 since the local temperature sensor is
always available.
1
Remote 1 Temp = ?
R
This bit is set to 1 if the Remote 1 temperature sensor (TDM1) is installed.
(Automatically detected on power-up.)
2
Remote 2 Temp = ?
R
This bit is set to 1 if the Remote 2 temperature sensor (TDM2) is installed.
(Automatically detected on power-up.)
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.
NOTE: Question marks on this and following pages indicate bit settings that depend on the state of certain pins on power-up.
Table 28. REGISTER 30H, 31H, 32H TEMP X* OFFSET REGISTERS (POWER-ON DEFAULT 00H)
Bit
Name
R/W
Description
<7:0>
Offset
R/W
This register contains an offset value that is automatically added to the
temperature value to reduce the effects of systemic offset errors.
* x denotes the number of the temperature channel. Register 30h is for Local temperature channel, 31h is for Remote 1 Temp (D1), 32h is for
Remote 2 Temp (D2).
Table 29. REGISTER 40H, 41H, 42H TEMP X* FAULT ACTION (POWER-ON DEFAULT 08H)
Bit
Name
R/W
Description
0
Assert CFAULT
on OT = 0
R/W
When this bit is set, CFAULT
will be asserted when the Temp x*
temperature exceeds the Temp x* Temperature High Limit, not otherwise.
1
Alarm speed on OT = 0
R/W
When this bit is set, the fans(s) will go to alarm speed when the Temp x*
temperature exceeds the Temp x* Temperature High limit, not otherwise.
2
INT
on OT = 0
R/W
When this bit is set, INT
will be asserted when the Temp x* temperature
exceeds the Temp x* Temperature High Limit, not otherwise.
3
Alarm below low = 0
R/W
This bit indicates whether an alarm (INT
, CFAULT
, or Alarm Speed) is
asserted when temperature goes above or below the Low Limit.
1 = above, 0 = below. This bit is set to 1 at power-up if automatic fan
speed control is enabled by Pin 18, cleared otherwise.
4
Assert CFAULT
on UT = 0
R/W
When this bit is set, CFAULT
will be asserted when the Temp x*
temperature crosses the Temp x* Temperature Low Limit, not otherwise.
Bit 3 decides whether CFAULT
is asserted for going above or below the
Low Limit. This bit is set to 1 if Automatic Fan Speed Control is enabled on
power-up.
5
Alarm speed on UT = 0
R/W
When this bit is set, the fans(s) will go to alarm speed when the Temp x*
temperature crosses the Temp x* Temperature Low Limit, not otherwise.
Bit 3 decides whether Alarm Speed is asserted for going above or below
the Low Limit.
6
INT
on UT = 0
R/W
When this bit is set, INT
will be asserted when the Temp x* temperature
crosses the Temp x* Temperature Low Limit, not otherwise. Bit 3 decides
whether INT
is asserted for going above or below the Low Limit.
7
Latch Temp Fault = 0
R/W
This bit latches a temperature out-of-limit event (i.e., when the
temperature goes above the high limit or crosses the low limit) on the
Temp x* channel. This bit is cleared by writing a 0 to it.
* x denotes the number of the temperature channel. Register 40h is for the Local temperature channel, 41h is for Remote 1 Temp (D1), 42h
is for Remote 2 Temp (D2).
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