PC87431M/S/C mini-Baseboard Management Controller (mBMC)

PC87431M/S/C
mini-Baseboard Management Controller (mBMC)
General Description
Outstanding Features
®
The National Semiconductor PC87431x family of miniBaseboard Management Controllers (mBMC) is a light version of the IPMI v1.5 BMC. It is targeted for a wide range of
remote-controlled platforms such as servers, workstations,
hubs and printers.
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The PC87431x incorporates an embedded microcontroller,
three System Management Bus (SMBus®) interfaces, a
Chassis Management interface, Bi-color LED control, an integrated flash, Fan control, 12 ADC channels, and Digital
Input Event and General-Purpose Output pins.
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The PC87431x interfaces with the host via a slave SMBus
interface; it interfaces with the LAN On Motherboard (LOM)
and with peripherals via two independent master SMBus interfaces.
The PC87431x also supports distributed management architecture via the Intelligent Platform Management Bus (IPMB).
In addition, the PC87431x includes an inhibit strap to enable the system to work with the daughter board of an advanced BMC.
The PC87431x, like other members of National’s Advanced
I/O family, is PC01 and ACPI compliant
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Canned solution
LAN commands follow IPMI v1.5
MD5 secure authentication
Support for a variety of popular LOMs
Field Replaceable Unit (FRU) Inventory
System Event Log (SEL)
Sensor Data Record (SDR) Repository
Platform Event Filtering (PEF)
Remote secure reset, Power On/Off
Remote settable BIOS boot options
BIOS Alerting interface
System health monitoring using SMBus-based sensors
LAN Alerting in PET format
Watchdog Timer
Host, LOM and Peripheral interfaces, via SMBus
Intelligent Platform Management Bus (PC87431C)
Digital Input Event pins and General-Purpose Output pins
Integrated Fan control and ADC (PC87431S/C)
Integrated flash, to reduce system cost
Two LEDs, with Bi-color LED control
Inhibit strap, to enable the system to work with the
daughter board of an advanced BMC
PC87431x System Connection Diagram
Host
RJ-45
VCC TRIS
SMBAlert
LAN On
Motherboard LOM SMBus
(LOM)
SMBAlert
SMBus/IPMB
SMI NMI
10 MHz
PC87431x
mini-Baseboard Management
Controller
Peripheral SMBus
= Optional
PC87417
ServerI/O
General-Purpose LEDs Fans VIN
Sensor Devices Output and Digital
Input Events
Notes: IPMB interface is supported by PC87431C only.
Integrated ADC and Fan are supported by PC87431S/C only.
National Semiconductor is a registered trademark of National Semiconductor Corporation.
All other brand or product names are trademarks of their respective holders.
© 2002 National Semiconductor Corporation
PWBTN
RSTOUT
PC87431M/S/C mini-Baseboard Management Controller (mBMC)
November 2002
Revision 1.4
PC87431x
Device-Specific Information
The following table shows the main features for the devices in the PC87431x family.
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
–
✔
✔
MD5
MD5
MD5
–
–
✔
Authentication
IPMB support on host interface
The package type is specified by two letters (L or T) that follow the part number:
● LLP package - PC87431xxx/L
● TSSOP package - PC87431xxx/T
Features
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Three SMBus 2.0 compatible Interfaces
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System Chassis Control
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Digital Input Events and General-Purpose Outputs
Integrated ADC Channels and Fan Control
(PC87431S/C)
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10-bit successive approximation Analog to Digital converter (up to 12 channels)
IPMI and DMTF/ASF Support
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Fan Speed Control for three fans
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Supports Intelligent Platform Management Interface
(IPMI) Specification v1.5 (revision 1.1), February 20,
2002
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Fan Speed Monitor for two fans
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Supports LAN Alert sending as SNMP Trap in IPMI
Platform Event Trap Format v1.0, December 7, 1998
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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
Internal E2PROM
Stores the following:
— Sensor access table
— Sensor configuration table
— Customizing table
— 512 bytes for FRU Inventory or OEM data
Host Interface
Clocking, Supply and Package Information
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Fault Resilient Booting (FRB) support with autonomous system reset, power cycling and CPU or BIOS
switch.
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Strap Input Controlled Operating Modes:
— Inhibit mode
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Critical event alerting from system monitoring device
on peripheral SMBus interface
Clocks:
— Single 10 MHz crystal oscillator
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Power Supply:
— Single supply operation: 4.7V - 5.5V
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Package Options:
— 48-pin TSSOP
— 44-pin LLP
Peripheral Interface
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LMxx-like Sensors devices for system health monitoring
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Supports PC874xx LPC SuperI/O for Servers and
Workstations.
www.national.com
2
Rev 1.4
PC87431x
Physical Dimensions
All dimensions are in millimeters
44-Pin Leadless Leadframe (LLP) Package
Order Numbers PC87431Mxx/L, PC87431Sxx/L, PC87431Cxx/L
NS Package Number LQA44A
48-Pin Plastic Thin Shrink Small Outline (TSSOP) Package
Order Numbers PC87431Mxx/T, PC87431Sxx/T, PC87431Cxx/T
NS Package Number MTD48
Rev 1.4
3
www.national.com
PC87431M/S/C mini-Baseboard Management Controller (mBMC)
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