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LM93CIMT Datasheet(PDF) 9 Page - National Semiconductor (TI) |
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LM93CIMT Datasheet(HTML) 9 Page - National Semiconductor (TI) |
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9 / 92 page  9.0 Pin Descriptions (Continued) Symbol Pin # Type Function REMOTE2− 21 Remote Thermal Diode_2 - Input (CPU2 THERMDC) 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+. REMOTE2+ 22 Remote Thermal Diode_2 + I/O (CPU2 THERMDA) 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+. AD_IN1 23 Analog Input (+12V1) Analog Input for +12V Rail 1 monitoring, for CPU1 voltage regulator. External attenuation resistors required such that 12V is attenuated to 0.927V. AD_IN2 24 Analog Input (+12V2) Analog Input for +12V Rail 2 monitoring, for CPU2 voltage regulator. External attenuation resistors required such that 12V is attenuated to 0.927V. 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. AD_IN4 26 Analog Input (FSB_Vtt) Analog input for 1.2V monitoring AD_IN5 27 Analog Input (3GIO / PXH / MCH_Core) Analog input for 1.5V monitoring. AD_IN6 28 Analog Input (ICH_Core) Analog input for 1.5V monitoring. 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. AD_IN10 32 Analog Input (+5V) Analog input for +5V monitoring silver box supply monitoring. AD_IN11 33 Analog Input (SCSI_Core) Analog input for +2.5V monitoring. AD_IN12 34 Analog Input (Mem_Core) Analog input for +1.969V monitoring. AD_IN13 35 Analog Input (Mem_Vtt) Analog input for +0.984V monitoring. AD_IN14 36 Analog Input (Gbit_Core) Analog input for +0.984V S/B monitoring. AD_IN15 37 Analog Input (-12V) Analog input for -12V monitoring. External resistors required to scale to positive level. Full scale reading at 1.236V. Address Select 38 3 level analog input This input selects the lower two bits of the LM93 SMBus slave address. www.national.com 9 |
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