ADM1029
http://onsemi.com
26
Reset Input
Pin 12 is an active-low system RESET input. Taking this
pin low will generate a system reset, which will reset all
registers to their default values.
Analog Inputs
Pins 19 and 20 of the ADM1029 are dual-function pins.
They may be configured as general-purpose logic I/O pins
by setting Bits 0, 1 of the GPIO Present/AIN Register
(address 05h) or as 0 V to 2.5 V analog inputs by clearing
these bits.
In the analog input mode, Pins 19 and 20 have an input
range of 0 V to 2.5 V. By suitable input scaling, the analog
input may be configured to measure other voltage ranges
such as system power supply voltages. If more than one
ADM1029 is used in a system, several such voltages may be
monitored.
The measured values of AIN0 and AIN1 are stored in the
AIN0 and AIN1 Value Registers (addresses B8h and B9h)
and are compared to high and low limits stored in the AIN0
and AIN1 High and Low Limit Registers (addresses A8h,
A9h and B0h, B1h).
The response of the ADM1029 to an out-of-limit
measurement on AIN0 or AIN1 depends on the status of the
AIN0 and AIN1 Behavior Registers (Registers 50h, 51h).
The response of CFAULT
, INT
, and fan speed to temperature
events depends on the setting of these registers, as detailed
in the register tables later in this data sheet. Figure 38 shows
how the AIN pins can be configured to respond to different
events.
Analog Monitoring Cycle
The ADM1029 performs a sequential round-robin,
monitoring cycle on all analog inputs and temperature inputs
that are enabled. A conversion on AIN0 or AIN1 typically
takes 11.6 ms, while an external temperature conversion
takes 185.6 ms.
Interrupt (INT
) Output
The INT
output is an open-drain output with selectable
polarity, intended to communicate fault conditions to the
host processor. The polarity is set to active low by clearing
Bit 7 of the Configuration Register (address 01h) or to active
high by setting this bit.
INT
can be asserted if any of the following conditions
occur:
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> A hot-plug event
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> Setting Bit 6 of the Configuration Register
(address 01h) forces INT
to be asserted
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> When a GPIO pin is configured as an input by setting
Bit 0 of the corresponding GPIO Behavior Register and
Bit 3 of the GPIO Behavior Register is also set, INT
will be asserted when the logic input is asserted (high
or low, depending on the polarity bit, Bit 1 of the
corresponding GPIO Behavior Register)
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> If Bit 2 of a Temp. Fault Action Register is set
(40h Local Sensor, 41h Remote 1, 42h Remote 2),
INT
will be asserted if the corresponding temperature
high limit is exceeded
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> If Bit 6 of a Temp. Fault Action Register is set, INT
will be asserted if a temperature input crosses the
corresponding temperature low limit, the direction
depending on the setting of Bit 3 of the Temp. Fault
Action register. (0 = INT
when temperature goes below
low limit, 1 = INT
when temperature goes above low
limit)
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> If Bit 1 of a Fan Fault Action Register (18h or 19h) is
set, INT
will be asserted when a tach measurement for
the corresponding fan exceeds the set limit
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> If Bit 1 of a Fan Fault Action Register (18h or 19h) is
set, INT
will be asserted when the fan fault input pin
for the corresponding fan is asserted (low)
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> If Bit 2 of an AIN Behavior Register is set
(50h AIN0, 51h AIN1), INT
will be asserted if the
corresponding AIN high limit is exceeded
?SPAN class="pst ADM1029ARQZ-R7_2295375_3"> If Bit 6 of an AIN Behavior Register is set, INT
will be
asserted if the corresponding analog input crosses its
AIN low limit, the direction depending on the setting of
Bit 3 of the AIN Behavior register. (0 = INT
when input
goes below low limit, 1 = INT
when input goes above
low limit)
Fan Free-Wheeling Test
The Fan Free-Wheeling Test is used to diagnose fans
connected to the ADM1029 to ensure that they are operating
correctly. Large fans tightly coupled in a duct can affect each
others airflow. If one fan has failed it may not be apparent,
as the other fan moving can suck air through the faulty fan
causing it to spin. The ADM1029 will spin each fan up
separately with the other powered down and measure the fan
speed of both. When it tries to spin the failed fan with the
working fan off, the fan speed measurement will fail, and the
faulty fan will be detected. The Fan Free-Wheel Test can be
invoked at any time in software by setting Bit 3 of the
Configuration Register (Reg. 0x01). The Fan Free-Wheel
Test normally takes about 10 seconds. Once the Fan
Free-Wheel test has completed, Bit 3 will automatically
clear to 0.
Automatic Fan Free-Wheel Test
Whenever a fan is hot-plugged, the Fan Free-Wheel Test
is automatically invoked. Bit 3 gets set high automatically
and once the test has completed, self-clears to 0. If 2 fans are
installed in the system, the Fan Free-Wheel Test is invoked
by removing the suspect fan and hotplugging a new one.
When the suspect fan (e.g., Fan 1) is removed, the Missing
bit (Bit 0) and Missing Latch bit (Bit 1) of the Fan 1 Status
Register are set. Fan 2 will then automatically run at
HotPlug Speed. If the faulty fan is replaced, the HotPlug
Latch bit (Bit 7) is set and the Missing bit (Bit 0) self-clears.
(However, the Missing Latch bit remains set.) Fan 2 will
return to its previous value automatically and the Fan
Free-Wheel Test is invoked. Fan 1 is run at 100% while
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ADM1030ARQZ-RL7
IC SNSR TEMP/FAN PWM CTRL 16QSOP
ADM1032ARZ-REEL
IC TEMP MONITOR 85DEG 8SOIC
ADM1033ARQZ-RL7
IC THERM/FAN SPEED CTLR 16-QSOP
ADM1034ARQZ-REEL
IC THERM/FAN SPEED CTRLR 16-QSOP
ADN8810ACPZ-REEL7
IC CURRENT SOURCE(12BIT) 24LFCSP
ADP2140ACPZ3328R7
IC REG DL BCK/LINEAR 10LFCSP
ADP5022ACBZ-6-R7
IC REG TRPL BCK/LINEAR 16WLCSP
ADP5041ACPZ-1-R7
IC REG TRPL BCK/LINEAR 20-LFCSP
相关代理商/技术参数
ADM1030
制造商:AD 制造商全称:Analog Devices 功能描述:Intelligent Temperature Monitor and PWM Fan Controller
ADM1030ARQ
功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6
ADM1030ARQ-REEL
功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6
ADM1030ARQ-REEL7
功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6
ADM1030ARQZ
功能描述:马达/运动/点火控制器和驱动器 TDM & PWM FAN CNTRLRS IC RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube
ADM1030ARQZ-REEL
功能描述:板上安装温度传感器 TDM PWM FAN CTRLRS IC RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
ADM1030ARQZ-REEL7
功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6
ADM1030ARQZ-RL7
功能描述:IC SNSR TEMP/FAN PWM CTRL 16QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6