LM96194CISQ/NOPB National Semiconductor, LM96194CISQ/NOPB Datasheet - Page 60

• Manufacturer Part Number: LM96194CISQ/NOPB
• Description: IC TRUTHERM HDWR MONITOR 48-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®, TruTherm®r

Specifications of LM96194CISQ/NOPB

• Function: Fan Control, Temp Monitor
• Topology: ADC (Sigma Delta), Comparator, Fan Control, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 85°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM96194CISQTR

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Register
Address
Bit
7:4
Register
Address
16.10.7 Register 4Fh H_Fan Error Status
Register
Address
16.11 VALUE REGISTERS
16.11.1 Registers 50–53h Unfiltered Temperature Value Registers
Zones 1 and 2 are all automatically updated by the LM96194. The Zone 4 (External Digital) Temp registers may be written by an
external SMBus device or can be assigned to AD_IN8.
The temperature registers for zones 1 and 2 will return a value of 80h if the remote diode pins are not implemented by the board
designer or are not functioning properly.
16.11.2 Registers 54–55h Filtered Temperature Value Registers
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.
0
1
2
3
06h
07h
50h
51h
52h
53h
08h
09h
54h
55h
4Fh
FAN1_ERR
FAN2_ERR
FAN3_ERR
FAN4_ERR
RES
Name
Read/
Write
R/W
Read/
Write
Read/
R
R
R
R
R
Write
RWC
R
R
R
R
Zone 2b (MMBT3904) Temp
Zone 2a (MMBT3904) Temp
RWC This bit is set when the Fan Tach 1 value register is above the value set in the
RWC This bit is set when the Fan Tach 2 value register is above the value set in the
RWC This bit is set when the Fan Tach 3 value register is above the value set in the
RWC This bit is set when the Fan Tach 4 value register is above the value set in the
R/W
Zone 2b (MMBT3904)
Zone 2a (MMBT3904)
Error Status
Zone 3 (Internal) Temp
(External Digital) Temp
R
Register
Zone 1b (CPU) Temp
Zone 1a (CPU) Temp
H_Fan
Name
Zone 1b (CPU)
Zone 1a (CPU)
Filtered Temp
Filtered Temp
Filtered Temp
Filtered Temp
Register
Fan Tach 1 Limit register.
Fan Tach 2 Limit register.
Fan Tach 3 Limit register.
Fan Tach 4 Limit register.
Reserved
Name
Register
Zone 4
Name
Bit 7
Bit 6
Bit 7
7
7
7
7
RES
Bit 7
7
7
7
7
7
7
Bit 5
Bit 6
60
6
6
6
6
Description
Bit 6
6
6
6
6
6
6
Bit 4
Bit 5
5
5
5
5
Bit 5
5
5
5
5
5
5
FAN4
_ERR
Bit 4
Bit 3
4
4
4
4
Bit 4
4
4
4
4
4
4
Bit 3
FAN3
_ERR
3
3
3
3
Bit 2
Bit 3
3
3
3
3
3
3
Bit 2
2
2
2
2
Bit 2
_ERR
2
2
2
2
2
2
FAN2
Bit 1
Bit 1
Bit 1
1
1
1
1
1
1
1
1
1
1
_ERR
FAN1
Bit 0
Bit 0
Bit 0
0
0
0
0
S1*, S3*, S4/5
S1*, S3*, S4/5
S1*, S3*, S4/5
S1*, S3*, S4/5
0
0
0
0
0
0
Masking
Sleep
N/A
Default
Default
Value
Default
Value
Value
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h