PC87435 Datasheet, PDF (1/5 Pages) National Semiconductor (TI) – PC87435 Enhanced IPMI Baseboard Management Controller

April 2003
Revision 1.01
PC87435 Enhanced IPMI Baseboard Management Controller
General Description
The National Semiconductor^ PC87435 is a highly-
integrated Enhanced IPMI Baseboard Management Controller
(BMC), or satellite management controller, with an embed-
ded RISC core and advanced functions. It is targeted for a
wide range of host-independent controlled platforms such
as servers and desktops.
The PC87435 incorporates National’s CompactRISC^®
CR16B core (a high-performance 16-bit RISC processor),
on-chip flash and RAM memories, system support func-
tions, Low Pin Count (LPC) host interface and a Bus Inter-
face Unit (BIU) that directly interfaces with optional
expansion memory and I/O devices.
System support functions include: two SMBus^® channels;
high-accuracy analog-to-digital (ADC) for system control,
system health monitoring and analog controls, USART for
ICMB extension, Watchdog and other timers; interrupt con-
trol and general-purpose I/O (GPIO).
The PC87435 interfaces with the host via an LPC bus that
provides three interface channels, with peripherals and IPMI
devices via two independent SMBuses and with additional
memory and I/O ports via a private expansion bus.
The PC87435, like all members of National’s AdvancedI/O
family, is PC01 and ACPI compliant.
Outstanding Features
s Intelligent Platform Management Interface (IPMI)-
optimized BMC
s 16-bit RISC core, with 2 Mbyte linear address space
and running at up to 20 MHz
s On-chip flash and RAM
s Host interface, based on Intel’s LPC Interface Specifi-
cation Revision 1.0, September 29th, 1997
s Two SMBus interface modules (each module can be
master and slave)
s USART for ICMB interface extension
s System timers, PWM and ADC channels
s 84/108 GPIO ports with a variety of wake-up events
s Random Number Generator for IPMI v1.5 authentication
s Integrated RTC
s Low current consumption
s JTAG-based debugger interface
System Connection Diagram
RJ45
NIC
PCI
South Bridge
SMBus1
LPC
SERIRQ SMI SCI V_BAT V_SB V_DD
IPMB
Temperature
Sensor
V_IN
Fan In
Fan Out
PC87435
Baseboard
Management Controller
SMBus 2
SEEPROM
UART
PC87417
ServerI/O
LM84 LM85 LM87
32.768
KHz
GPIOs Wake-Up
Expansion Bus
RS485 DS14185
XCVR
XCVR
= Optional Component
PC16550
NV
UART
SRAM
ICMB
x86 Boot
Blocks
ICMB
Emergency
Management
Port
CompactRISC is a trademark, and TRI-STATE and National Semiconductor are registered trademarks of National Semiconductor Corporation.
All other brand or product names are trademarks of their respective holders.
© 2003 National Semiconductor Corporation
www.national.com