参数资料
型号: ADT7473ARQZ-REEL7
厂商: ON Semiconductor
文件页数: 60/73页
文件大小: 0K
描述: IC REMOTE THERMAL CTRLR 16QSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
标准包装: 1,000
系列: dBCool®
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: -40°C ~ 125°C
精确度: ±2.5%
拓扑: ADC,比较器,风扇速度计数器,多路复用器,寄存器库
输出类型: SMBus?
输出警报:
输出风扇:
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 带卷 (TR)
ADT7473
Table 62. REGISTER 0X40 ? CONFIGURATION REGISTER 1 (POWER-ON DEFAULT = 0X01)
Bit No.
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
Mnemonic
STRT
LOCK
RDY
FSPD
Vx1
FSPDIS
TODIS
RES
Latch Reset
R/W
R/W
Write Once
Read-only
R/W
R/W
R/W
R/W
?
Description
Logic 1 enables monitoring and PWM control outputs based on the limit settings
programmed. Logic 0 disables monitoring and PWM control based on the default powerup
limit settings. This bit is not locked when Bit 1 (LOCK bit) has been written. This bit remains
writable after lock bit is set.
Logic 1 locks all limit values to their current settings. Once this bit is set, all lockable registers
become read-only and cannot be modified until the ADT7473/ADT7473 ? 1 is powered down
and powered up again. This prevents rogue programs, such as viruses, from modifying
critical system limit settings. (This is a lockable bit.)
This bit is set to 1 by the ADT7473/ADT7473 ? 1 to indicate only that the device is fully
powered up and ready to begin system monitoring.
When set to 1, this bit runs all fans at maximum speed as programmed in the maximum
PWM duty cycle registers (0x30, 0x38, 0x39 and 0x3A ). Power-on default = 0. This bit is not
locked at any time.
BIOS should set this bit to a 1 when the ADT7473/ADT7473 ? 1 is configured to measure
current from an ADI ADOPT t VRM controller and to measure the CPU’s core voltage. This
bit allows monitoring software to display CPU watts usage. (This is a lockable bit.)
Logic 1 disables fan spin-up for two TACH pulses. Instead, the PWM outputs go high for the
entire fan spin-up timeout selected.
When this bit is set to 1, the SMBus timeout feature is enabled. This allows the
ADT7473/ADT7473 ? 1 to be used with SMBus controllers that cannot handle SMBus
timeouts. (This is a lockable bit.)
Reserved on the ADT7473.
On the ADT7473 ? 1, resets latch conditions when set to 1.
Table 63. REGISTER 0X41 ? INTERRUPT STATUS REGISTER 1 (POWER-ON DEFAULT = 0X00)
Bit No.
<1>
<2>
<4>
<5>
<6>
<7>
Mnemonic
V CCP
V CC
R1T
LT
R2T
OOL
R/W
Read-only
Read-only
Read-only
Read-only
Read-only
Read-only
Description
V CCP = 1 indicates the V CCP high or low limit has been exceeded. This bit is cleared on a
read of the status register only if the error condition has subsided.
V CC = 1 indicates the V CC high or low limit has been exceeded. This bit is cleared on a read
of the status register only if the error condition has subsided.
R1T = 1 indicates the Remote 1 low or high temperature has been exceeded. This bit is
cleared on a read of the status register only if the error condition has subsided.
LT = 1 indicates the local low or high temperature has been exceeded. This bit is cleared on
a read of the status register only if the error condition has subsided.
R2T = 1 indicates the Remote 2 low or high temperature has been exceeded. This bit is
cleared on a read of the status register only if the error condition has subsided.
OOL = 1 indicates an out-of-limit event has been latched in Interrupt Status Register 2
(0x42). This bit is a logical OR of all status bits in Interrupt Status Register 2. Software can
test this bit in isolation to determine whether any of the voltage, temperature, or fan speed
readings represented by Interrupt Status Register 2 are out-of-limit, which saves the need to
read Interrupt Status Register 2 every interrupt or polling cycle.
http://onsemi.com
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