參數(shù)資料
型號(hào)： ADM1029ARQZ-R7
廠商： ON Semiconductor
文件頁(yè)數(shù)： 39/50頁(yè)
文件大小： 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(yuǎn)程
拓?fù)洌?/td> ADC，風(fēng)扇控制，寄存器庫(kù)
輸出類型： 開路漏極
輸出警報(bào)： 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
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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