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参数资料
| 型号： | LM80CIMTX-32 |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor |
| 中文描述： | 串行接口ACPI的兼容微处理器系统硬件监视器 |
| 文件页数： | 19/29页 |
| 文件大小： | 412K |
| 代理商： | LM80CIMTX-32 |
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Functional Description (Continued)
12.8 Fan Divisor Register/RST_OUT/OS — Address 05h
Power on – <7:4> is 0101, and <3:0>is mapped to VID <3:0>
Bit
Name
Read/Write
Description
0
FAN1 Mode
Select
Read/Write
A one selects the level sensitive input mode while a zero selects Fan count mode
for the FAN1 input pin.
1
FAN2 Mode
Select
Read/Write
A one selects the level sensitive input mode while a zero selects Fan count mode
for the FAN2 input pin.
2-3
FAN1 RPM
Control
Read/Write
FAN1 Speed Control.
<3:2> = 00 - divide by 1;
<3:2> = 01 - divide by 2;
<3:2> = 10 - divide by 4;
<3:2> = 11 - divide by 8.
If level sensitive input is selected: >2< = 1 selects and active-low input (An interrupt
will be generated if the FAN2 input is Low), >2< = 0 selects an active-high input (an
interrupt will be generated if the FAN2 input is High).
4-5
FAN2 RPM
Control
Read/Write
FAN2 Speed Control.
<5:4> = 00 - divide by 1;
<5:4> = 01 - divide by 2;
<5:4> = 10 - divide by 4;
<5:4> = 11 - divide by 8.
If level sensitive input is selected: <2> = 1 selects and active-low input (An interrupt
will be generated if the FAN2 input is Low), <2> = 0 selects an active-high input (an
interrupt will be generated if the FAN2 input is High).
6
OS pin enable
Read/Write
A one enables OS mode on the RST_OUT/OS output pin, while Bit 7 of this register
is set to zero. If bits 6 and 7 of this register are set to zero the RST_OUT/OS pin is
disabled.
7
RST enable
Read/Write
A one sets the RST_OUT/OS pin in the RST mode. In the RST mode, bit 7 of the
Fan Divisor/RST_OUT/OS Register has to be set to one. If bits 6 and 7 of this
register are set to zero the RST_OUT/OS pin is disabled.
12.9 OS Configuration/Temperature Resolution Register — Address 06h
Power on default Serial Bus address <7:0> = 0000 0001 binary
Bit
Name
Read/Write
Description
0
OS status
Read only
Status of the OS.This bit mirrors the state of the RST_OUT/OS pin when in the OS
mode.
1
OS Polarity
Read/Write
A zero selects OS to be active-low, while a one selects OS to be active high. OS is
an open-drain output.
2
OS mode select
Read/Write
A one selects the one time interrupt mode for OS, while a zero selects comparator
mode for OS. (See in Section 7.0)
3
Temperature
Resolution
Control
Read/Write
A zero selects the default 8-bit plus sign resolution temperature conversions while a
one selects 11-bit plus sign resolution temperature conversions. 8-bit plus sign
conversions time is approximately 100 ms, while 11-bit plus sign conversion time is
approximately 2 seconds.
4-7
Temp [3:0]
Read/Write
The lower nibble (4 LSBs) of the 11-bit plus sign temperature data. <4> = Temp
[0] (nibble LSB, 0.0625C), <5> = Temp [1], <6> = Temp [2], <7> = Temp 3
(nibble MSB, 0.5C). For 8-bit plus sign temperature resolution, <7> = Temp [0]
(LSB, 0.5C) while <4:6> are undefined.
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