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LM93 Datasheet(PDF) 55 Page - Texas Instruments

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Part # LM93
Description  Hardware Monitor with Integrated Fan Control for Server Management
PDF  95 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM93 Datasheet(HTML) 55 Page - Texas Instruments

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LM93
www.ti.com
SNAS210E – DECEMBER 2003 – REVISED MARCH 2013
Sleep
Bit
Name
R/W
Description
Masking
2
FAN3_ERR
RWC
This bit is set when the Fan Tach 3 value register is above the value set in the Fan
S1*, S3*, S4/5
Tach 3 Limit register.
3
FAN4_ERR
R
This bit is set when the Fan Tach 4 value register is above the value set in the Fan
S1*, S3*, S4/5
Tach 4 Limit register.
7:4
RES
R
Reserved
N/A
3.17.6 VALUE REGISTERS
3.17.6.1 Registers 50–53h
Unfiltered Temperature Value Registers
Register
Read/
Register
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Address
Write
Name
Value
Zone 1
50h
R
(CPU1)
7
6
5
4
3
2
1
0
N/D
Temp
Zone 2
51h
R
(CPU1)
7
6
5
4
3
2
1
0
N/D
Temp
Zone 3
52h
R
(Internal)
7
6
5
4
3
2
1
0
N/D
Temp
Zone 4
(External
53h
R/W
7
6
5
4
3
2
1
0
N/D
Digital)
Temp
Zones 1, 2 and 3 are all automatically updated by the LM93. The Zone 4 (External Digital) Temp register
must be written by an external SMBus device.
The temperature registers for zones 1 and 2 must return a value of 80h if the remote diode pins are not
implemented by the board designer or are not functioning properly.
3.17.6.2 Registers 54–55h
Filtered Temperature Value Registers
Register
Read/
Register
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Address
Write
Name
Value
Zone 1
(CPU1)
54h
R
7
6
5
4
3
2
1
0
00h
Filtered
Temp
Zone 2
(CPU1)
55h
R
7
6
5
4
3
2
1
0
00h
Filtered
Temp
These registers reflect the temperature of zones 1 and 2 after the spike smoothing filter has been applied.
The characteristics of the filtering can be adjusted by using the Zones 1/2 Spike Smoothing Control
register.
3.17.6.3 Register 56–65h
A/D Channel Voltage Registers
Register
Read/
Register
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Address
Write
Name
Value
AD_IN1
56h
R
7
6
5
4
3
2
1
0
N/D
Voltage
AD_IN2
57h
R
7
6
5
4
3
2
1
0
N/D
Voltage
AD_IN3
58h
R
7
6
5
4
3
2
1
0
N/D
Voltage
AD_IN4
59h
R
7
6
5
4
3
2
1
0
N/D
Voltage
Copyright © 2003–2013, Texas Instruments Incorporated
Functional Description
55
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Product Folder Links: LM93



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