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LM94 Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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LM94 Datasheet(HTML) 6 Page - National Semiconductor (TI) |
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6 / 24 page  9.0 Pin Descriptions (Continued) Symbol Pin # Type Function REMOTE1− 19 Remote Thermal Diode_1- Input (CPU 1 THERMDC) This is the negative input (current sink) from both of the CPU1 thermal diodes. 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 REMOTE1− and REMOTE1+. REMOTE1a+ 20 Remote Thermal Diode_1+ I/O (CPU1 THERMDA1) This is a positive connection to the first CPU1 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 REMOTE1− and each REMOTE1+. REMOTE2− 21 Remote Thermal Diode_2 - Input (CPU2 THERMDC) This is the negative input (current sink) from both of the CPU2 thermal diodes. Connected to THERMDC pins 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 each REMOTE2+. REMOTE2a+ 22 Remote Thermal Diode_2 + I/O (CPU2 THERMDA1) This is a positive connection to the first 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+. AD_IN1/REMOTE1b+ 23 Analog Input (+12V1 or CPU1 THERMDA2) Analog Input for +12V Rail 1 monitoring, for CPU1 voltage regulator. External attenuation resistors required such that 12V is attenuated to 0.927V for nominal 3⁄4 scale reading. This pin may also serve as the second positive thermal diode input for CPU1. AD_IN2/REMOTE2b+ 24 Analog Input (+12V2 or CPU2 THERMDA2) Analog Input for +12V Rail 2 monitoring, for CPU2 voltage regulator. External attenuation resistors required such that 12V is attenuated to 0.927V for nominal 3⁄4 scale reading. This pin may also serve as the second positive thermal diode input for CPU2. AD_IN3 25 Analog Input (+12V3) Analog Input for +12V Rail 3, for Memory/3GIO slots. External attenuation resistors required such that 12V is attenuated to 0.927V for nominal 3⁄4 scale reading. AD_IN4 26 Analog Input (FSB_Vtt) Analog input for 1.2V monitoring, nominal 3⁄4 scale reading AD_IN5 27 Analog Input (3GIO / PXH / MCH_Core) Analog input for 1.5V monitoring, nominal 3⁄4 scale reading AD_IN6 28 Analog Input (ICH_Core) Analog input for 1.5V monitoring, nominal 3⁄4 scale reading AD_IN7 (P1_Vccp) 29 Analog Input (CPU1_Vccp) Analog input for +Vccp (processor voltage) monitoring. AD_IN8 (P2_Vccp) 30 Analog Input (CPU2_Vccp) Analog input for +Vccp (processor voltage) monitoring. AD_IN9 31 Analog Input (+3.3V) Analog input for +3.3V monitoring, nominal 3⁄4 scale reading AD_IN10 32 Analog Input (+5V) Analog input for +5V monitoring silver box supply monitoring, nominal 3⁄4 scale reading www.national.com 6 |
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Similar Description - LM94 |
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