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2

Rev 1.4

Device-Specific Information

The following table shows the main features for the devices in the PC87431x family.

The package type is specified by two letters (L or T) that follow the part number:

q

LLP package - PC87431xxx/L

q

TSSOP package - PC87431xxx/T

Features

s

Three SMBus 2.0 compatible Interfaces

s

System Chassis Control

s

Digital Input Events and General-Purpose Outputs

IPMI and DMTF/ASF Support

s

Supports Intelligent Platform Management Interface

(IPMI) Specification v1.5 (revision 1.1), February 20,

2002

s

Supports LAN Alert sending as SNMP Trap in IPMI

Platform Event Trap Format v1.0, December 7, 1998

s

Secure Authentication, based on RFC 1321, The MD5

Message-Digest Algorithm, R. Rivest, MIT Laboratory for

Computer Science and RSA Data Security, Inc., April

1992

Host Interface

s

Fault Resilient Booting (FRB) support with autono-

mous system reset, power cycling and CPU or BIOS

switch.

s

Critical event alerting from system monitoring device

on peripheral SMBus interface

Peripheral Interface

s

LMxx-like Sensors devices for system health monitoring

s

Supports PC874xx LPC SuperI/O for Servers and

Workstations.

Integrated ADC Channels and Fan Control

(PC87431S/C)

s

10-bit successive approximation Analog to Digital con-

verter (up to 12 channels)

s

Fan Speed Control for three fans

s

Fan Speed Monitor for two fans

s

Stores the following:

— Sensor access table

— Sensor configuration table

— Customizing table

— 512 bytes for FRU Inventory or OEM data

Clocking, Supply and Package Information

s

Strap Input Controlled Operating Modes:

— Inhibit mode

s

Clocks:

— Single 10 MHz crystal oscillator

s

Power Supply:

— Single supply operation: 4.7V - 5.5V

s

Package Options:

— 48-pin TSSOP

— 44-pin LLP

Function

PC87431M

PC87431S

PC87431C

Remote Chassis Control

✔✔✔

Remote Boot Options

✔✔✔

LAN Configuration and Alerting

✔✔✔

System Health Monitoring

✔✔✔

System Event Log (SEL)

✔✔✔

Field Replaceable Unit (FRU) Inventory

✔✔✔

Platform Event Filtering

✔✔✔

Watchdog and FRB

✔✔✔

External Sensors Interface

✔✔✔

Internal Sensors: ADC Channels and Fan

–

✔✔

Authentication

MD5

MD5

MD5

IPMB support on host interface

–

–

✔