LM96194CISQ/NOPB National Semiconductor, LM96194CISQ/NOPB Datasheet - Page 40

• 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
7:1
Register
Address
16.3 FACTORY REGISTERS 00h–04h
16.3.1 Register 00h XOR Test
0
16.3.2 Register 01h SMBus Test
This register can be used to verify that the SMBus can read and write to the device without effecting any programmed settings.
16.3.3 “REMOTE DIODE” MODE SELECT
16.3.3.1 Register 05h Remote-Diode Transistor Mode Select
16.4 VALUE REGISTERS SECTION 1
16.4.1 Registers 06-07h and 50–53h Unfiltered Temperature Value Registers
Zones 1 and 2 are all automatically updated by the LM96194. The Zone 3 (Internal) Temp and Zone 4 (External Digital) Temp
registers may be written by an external SMBus device or can be assigned to AD_IN8, respectively.
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.
Register
Address
Register
Address
05h
06h
07h
50h
51h
52h
53h
01h
00h
Name R/W
XEN
RES
Bit
7:4
0
1
2
3
Read/
Write
R/W
Read/
Write
R/W
R/W
R
R
R
R
R
R
Read/
Write
Read/
Write
R/W
R/W
Transistor
Register
Default
Name
Select
Mode
0
0
Zone 2b (MMBT3904) Temp
Zone 2a (MMBT3904) Temp
Qa_T_EN
Qb_T_EN
Pa_T_EN
Pb_T_EN
Zone 3 (Internal) Temp
(External Digital) Temp
SMBus Test
Zone 1b (CPU) Temp
Zone 1a (CPU) Temp
XOR Test
Register
Name
Register
RES
Name
The LM96194 incorporates an XOR tree test mode. When the test mode is enabled by
setting this bit, the part enters XOR test mode. Clearing this bit brings the part out of XOR
test mode.
Reserved
Name
Bit 7
RES
Register
Zone 4
Name
Bit 6
RES
Bit 7
Bit 7
7
R/W
R/W
R/W
R/W
R/W
Bit 6
Bit 5
RES
R
Bit 6
6
Bit 7
7
7
7
7
7
7
Bit 5
40
Bit 4
RES
Bit 5
5
Bit 6
Description
If set, Processor Remote-Diode “a” Transistor Mode enabled.
If set, Processor Remote-Diode “b” Transistor Mode enabled.
If set, MMBT3904 Remote-Diode “a” Transistor Mode enabled.
If set, MMBT3904 Remote-Diode “b” Transistor Mode enabled.
Reserved
Description
6
6
6
6
6
6
Bit 4
RES
Qb_T_EN Qa_T_EN Pb_T_EN
Bit 4
Bit 5
Bit 3
4
5
5
5
5
5
5
Bit 3
Bit 4
Bit 3
4
4
4
4
4
4
3
Bit 2
Bit 3
Bit 2
3
3
3
3
3
3
Bit 2
2
Bit 2
Bit 1
2
2
2
2
2
2
Bit 1
Bit 1
1
Bit 1
1
1
1
1
1
1
Pa_T_EN
Bit 0
XEN
Bit 0
Bit 0
0
Bit 0
0
0
0
0
0
0
Default
Masking
Default
Value
Value
Default
Default
Sleep
00h
Value
00h
Value
N/A
N/A
00h
00h
00h
00h
00h
00h
00h