Rainbow-electronics LM93 Manual do Utilizador descarregar pdf (Página 10)

9.0 Pin Descriptions (Continued)

Symbol Pin # Type Function

AD_IN16 39 POWER (V

) +3.3V

standby power

power input for LM93. Generally this is connected to +3.3V

standby power.

The LM93 can be powered by +3.3V if monitoring in low power

states is not required, but power should be applied to this input

before any other pins.

This pin also serves as the analog input to monitor the 3.3V

stand-by (SB) voltage. It is necessary to bypass this pin with a 0.1

µF in parallel with 100 pF. A bulk capacitance of 10 µF should be in

the near vicinity. The 100 pF should be closest to the power pin.

GND 40 GROUND Digital Ground. Digital ground and analog ground need to be tied

together at the chip then both taken to a low noise system ground.

A voltage difference between analog and digital ground may cause

erroneous results.

PWM1 41 Digital Output

(Open-Drain)

Fan control output 1.

PWM2 42 Digital Output

(Open-Drain)

Fan control output 2

P1_VID0 43 Digital Input Voltage Identification signal from the processor.

P1_VID1 44 Digital Input Voltage Identification signal from the processor.

P1_VID2 45 Digital Input Voltage Identification signal from the processor.

P1_VID3 46 Digital Input Voltage Identification signal from the processor.

P1_VID4 47 Digital Input Voltage Identification signal from the processor.

P1_VID5 48 Digital Input Voltage Identification signal from the processor.

P1_PROCHOT

49 Digital I/O

(Open-Drain)

Connected to CPU1 PROCHOT (processor hot) signal through a

bidirectional level shifter.

P2_PROCHOT

50 Digital I/O

(Open-Drain)

Connected to CPU2 PROCHOT (processor hot) signal through a

bi-directional level shifter.

P2_VID0 51 Digital Input Voltage Identification signal from the processor.

P2_VID1 52 Digital Input Voltage Identification signal from the processor.

P2_VID2 53 Digital Input Voltage Identification signal from the processor.

P2_VID3 54 Digital Input Voltage Identification signal from the processor.

P2_VID4 55 Digital Input Voltage Identification signal from the processor.

P2_VID5 56 Digital Input Voltage Identification signal from the processor.

The overscore indicates the signal is active low (“Not”).

10.0 Server Terminology

A/D Analog to Digital Converter

ACPI Advanced Configuration and Power

Interface

ALERT

SMBus signal to bus master that an event

occurred that has been flagged for

attention.

ASF Alert Standard Format

BMC Baseboard Micro-Controller

BW Bandwidth

DIMM Dual inline memory module

DP Dual-processor

ECC Error checking and correcting

FRU Field replaceable unit

FSB Front side bus

FW Firmware

Gb Gigabit

GB Gigabyte

Gbe Gigabit Ethernet

GPIO General purpose I/O

HW Hardware

C Inter integrated circuit (bus)

LAN Local area network

LVDS Low-Voltage Differential Signaling

Mb Megabit

MB Megabyte

MP Multi-processor

MTBF Mean time between failures

LM93

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