餂?/div>
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鈥檚 CompactRISC
廬
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
廬
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鈥檚 AdvancedI/O
family, is PC01 and ACPI compliant.
Outstanding Features
s
s
s
s
s
s
s
s
s
s
s
s
Intelligent Platform Management Interface (IPMI)-
optimized BMC
16-bit RISC core, with 2 Mbyte linear address space
and running at up to 20 MHz
On-chip 鏗俛sh and RAM
Host interface, based on Intel鈥檚
LPC Interface Speci鏗?
cation Revision 1.0,
September 29th, 1997
Two SMBus interface modules (each module can be
master and slave)
USART for ICMB interface extension
System timers, PWM and ADC channels
84/108 GPIO ports with a variety of wake-up events
Random Number Generator for IPMI v1.5 authentication
Integrated RTC
Low current consumption
JTAG-based debugger interface
System Connection Diagram
RJ45
NIC
PCI
South Bridge
LPC
SERIRQ SMI SCI
V
BAT
V
SB
V
DD
SMBus1
Temperature
Sensor
V
IN
Fan In
Fan Out
IPMB
PC87435
Baseboard
Management Controller
32.768
KHz
SMBus 2
SEEPROM
UART
PC87417
ServerI/O
LM84
LM85
LM87
GPIOs Wake-Up
Expansion Bus
PC16550
UART
NV
SRAM
x86 Boot
Blocks
RS485
XCVR
ICMB
DS14185
XCVR
Emergency
Management
Port
= Optional Component
ICMB
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.
漏 2003 National Semiconductor Corporation
www.national.com
1
2
3
4
5
