參數(shù)資料
型號： ADM1029ARQZ-R7
廠商： ON Semiconductor
文件頁數(shù)： 42/50頁
文件大?。?/td> 402K
描述： IC SENSOR 2TEMP/FAN CTRL 24QSOP
產(chǎn)品變化通告： QSOP 24ld Pkg (MSL) Change 17/Jun/2010
標(biāo)準(zhǔn)包裝： 1,000
功能： 風(fēng)扇控制，溫度監(jiān)控器
傳感器類型： 內(nèi)部和外部
感應(yīng)溫度： 0°C ~ 100°C，外部傳感器
精確度： ±1°C 本地，±3°C 遠程
拓撲： ADC，風(fēng)扇控制，寄存器庫
輸出類型： 開路漏極
輸出警報： 是
輸出風(fēng)扇： 是
電源電壓： 3 V ~ 5.5 V
工作溫度： 0°C ~ 100°C
安裝類型： 表面貼裝
封裝/外殼： 24-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 24-QSOP
包裝： 帶卷 (TR)
ADM1029
http://onsemi.com
42
Table 40. REGISTER 09H  SET FAN X FULL SPEED (POWER-ON DEFAULT 00H)
Bit
Name
R/W
Description
0
Fan 1 Full Speed = 0
R/W
When set to 1 Fan 1 will run at Full Speed.
1
Fan 2 Full Speed = 0
R/W
When set to 1 Fan 2 will run at Full Speed.
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.
Table 41. REGISTER 0CH  FAN SPIN-UP REGISTER (POWER-ON DEFAULT 03H)
Bit
Name
R/W
Description
<7:4>
Reserved
R
Unused
3
Spin-up Disable
R/W
When this bit is set to 1, fan spin-up to full speed will be disabled.
<2:0>
Fan Spin-up Time
R/W
These bits select the spin-up time for the fans
000 = 16 seconds
001 = 8 seconds
010 = 4 seconds
011 = 2 seconds (Default)
100 = 1 second
101 = 1/4 second
110 = 1/16 second
111 = 1/64 second
Table 42. REGISTER 10H, 11H  FAN X* STATUS (POWER-ON DEFAULT 0000 0?0?)
Bit
Name
R/W
Description
<7:4>
Reserved
R
Unused
0
Missing = x
R
Reflects the state of Pins 4/21. Low means Fan x* is installed, High
means it is missing. This bit will automatically return Low if a missing fan
is replaced.
1
Missing _L = 0
R/W
This bit is edge-triggered and latches a Fan x* missing event on removal
of Fan x*. This bit is cleared by writing a 0 to it.
2
Fault_ = x
R
Inverse of Pin 2/23. Low on pin means Fan x* has a fault (Pins 2/23 Low),
High on pin means it is OK. This bit will automatically return Low if
Pin 2/23 goes high.
3
Fault_L_ = 0
R/W
This bit is edge-triggered and latches a Fan x* fault event on Pin 2/23.
This bit is cleared by writing a 0 to it. If the PRESENT pin for a fan input is
high (fan not installed) this bit will be cleared automatically.
4
Sleep = 0
R/W
When this bit is set, Fan x* will be stopped and no Fan x* faults will be
monitored. If Bit 4 in Fan x* Fault Action Register is set then Fan x* will
go to Alarm Speed if an overtemperature event is detected as per settings
in the Temp Fault Action Registers.
5
Hot Plug Priority
R/W
This bit indicates whether Fan x* runs at Hot-Plug Speed (bit set to 1) or
Alarm Speed (bit set to 0) if both modes are triggered.
6
Tach_Fault_L
R/W
Latches a Fan x* Tach fault. This bit is cleared by writing a 0 to it. If the
PRESENT pin for a fan input is high (fan not installed) this bit will be
cleared automatically.
7
Hot_Plug_L
R/W
This bit is edge-triggered and latches a Fan x* Hot-Plug event which is
the insertion of Fan x*. (Note difference to Bit 1) This bit is cleared by
writing a 0 to it. If a fan is Hot-Plug installed, it will run at Normal Speed.
* x denotes the fan number. Register 10h is for Fan 1 and Register 11h is for Fan 2.
NOTE: Question marks on this and following pages indicate bit settings that depend on the state of certain pins on power-up.
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