LM93CIMT National Semiconductor, LM93CIMT Datasheet - Page 9

• Manufacturer Part Number: LM93CIMT
• Description: Microprocessor Support IC
• Manufacturer: National Semiconductor

Specifications of LM93CIMT

• Peak Reflow Compatible (260 C): No
• Supply Voltage Max: 3.6V
• Leaded Process Compatible: No
• Supply Voltage Min: 3V
• Operating Temperature Min: 0��C
• Package / Case: 56-TSSOP
• Operating Temperature Max: 85°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Symbol
REMOTE2−
REMOTE2+
AD_IN1
AD_IN2
AD_IN3
AD_IN4
AD_IN5
AD_IN6
AD_IN7 (P1_Vccp)
AD_IN8 (P2_Vccp)
AD_IN9
AD_IN10
AD_IN11
AD_IN12
AD_IN13
AD_IN14
AD_IN15
Address Select
9.0 Pin Descriptions
Pin #
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Type
Remote Thermal
Diode_2 - Input
(CPU2 THERMDC)
Remote Thermal
Diode_2 + I/O (CPU2
THERMDA)
Analog Input (+12V1)
Analog Input (+12V2)
Analog Input (+12V3)
Analog Input
(FSB_Vtt)
Analog Input (3GIO /
PXH / MCH_Core)
Analog Input
(ICH_Core)
Analog Input
(CPU1_Vccp)
Analog Input
(CPU2_Vccp)
Analog Input (+3.3V)
Analog Input (+5V)
Analog Input
(SCSI_Core)
Analog Input
(Mem_Core)
Analog Input
(Mem_Vtt)
Analog Input
(Gbit_Core)
Analog Input (-12V)
3 level analog input
(Continued)
Function
This is the negative input (current sink) from the CPU2 thermal
diode. Connected to THERMDC pin of Pentium processor or the
emitter of a diode connected MMBT3904 NPN transistor. Serves as
the negative input into the A/D for thermal diode voltage
measurements. A 100 pF capacitor is optional and can be
connected between REMOTE2− and REMOTE2+.
This is a positive connection to the CPU2 thermal diode. Serves as
the positive input into the A/D for thermal diode voltage
measurements. It also serves as a current source output that
forward biases the thermal diode. Connected to THERMDA pin of
Pentium processor or the base of a diode connected MMBT3904
NPN transistor. A 100 pF capacitor is optional and can be
connected between REMOTE2− and REMOTE2+.
Analog Input for +12V Rail 1 monitoring, for CPU1 voltage regulator.
External attenuation resistors required such that 12V is attenuated
to 0.927V.
Analog Input for +12V Rail 2 monitoring, for CPU2 voltage regulator.
External attenuation resistors required such that 12V is attenuated
to 0.927V.
Analog Input for +12V Rail 3, for Memory/3GIO slots. External
attenuation resistors required such that 12V is attenuated to 0.927V.
Analog input for 1.2V monitoring
Analog input for 1.5V monitoring.
Analog input for 1.5V monitoring.
Analog input for +Vccp (processor voltage) monitoring.
Analog input for +Vccp (processor voltage) monitoring.
Analog input for +3.3V monitoring.
Analog input for +5V monitoring silver box supply monitoring.
Analog input for +2.5V monitoring.
Analog input for +1.969V monitoring.
Analog input for +0.984V monitoring.
Analog input for +0.984V S/B monitoring.
Analog input for -12V monitoring. External resistors required to scale
to positive level. Full scale reading at 1.236V.
This input selects the lower two bits of the LM93 SMBus slave
address.
9
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