82573 datasheet(13/39 Pages) INTEL

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Datasheet—82573

2.5.2

System Management Bus (SMBus) Signals1

Note:

The signals listed in the following table should not be connected when using an 82573L.

Refer to the 82573/82562 Dual Footprint Design Guide reference schematics for more

information.

2.5.3

LED Signals

2.5.4

Other Signals

1. The 82573L does not support the System Management Bus (SMBus).

Signal

Type

Name and Function

SMB_CLK

I/O

SMBus Clock

The SMBus Clock signal is an open drain signal for the serial SMBus interface.

SMB_DAT

I/O

SMBus Data

The SMB Data signal is an open drain signal for the serial SMBus interface.

SMB_ALRT#/

ASF_PWR_

GOOD

I/O

SMBus Alert/PCI Power Good

The SMBus Alert signal is an open drain signal for serial SMBus interface. In ASF

mode, this signal acts as the PCI Power Good input signal.

Signal

Type

Name and Function

LED0#

LED0

This pin provides a signal for programmable LED indication.

LED1#

LED1

This pin provides a signal for programmable LED indication.

LED2#

LED2

This pin provides a signal for programmable LED indication.

Signal

Type

Name and Function

THERMn

THERMp

Thermal Test Pins

These pins are used for thermal testing. They can be connected to test points.

FUSEV

Fuse Supply

This should be connected to 2.5V for normal operation.

82573 Datasheet(PDF) 13 Page - Intel Corporation

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