PC87364
128-Pin LPC SuperI/O with Extended Wake-Up and
Protection Support
General Description
Outstanding Features
•
Protection features, including I/O access lock, chassis
hood lock/unlock, chassis intrusion detection, GPIO pin
attribute lock and pin configuration lock
•
•
•
•
Fan Speed Control and Monitor for three fans
•
The PC87364 also incorporates: Fan Speed Control and
Monitor (FSCM) for three fans, a Floppy Disk Controller
(FDC), a Keyboard and Mouse Controller (KBC), a full IEEE
1284 Parallel Port, two enhanced Serial Ports (UARTs), one
with Infrared (IR) support, an ACCESS.bus® Interface
(ACB), System Wake-Up Control (SWC), General-Purpose
Input/Output (GPIO) support for 51 ports, Interrupt Serializer
for Parallel IRQs and an enhanced WATCHDOG timer.
Extended Wake-Up support, including legacy/ACPI
power button support, direct power supply control in
response to wake-up events, power-fail recovery
•
The PC87364, a member of National Semiconductor’s 128pin LPC SuperI/O family, introduces wake-up support for a
wide range of wake-up events, and new hardware and software features to protect the system design. The PC87364
provides support for 51 GPIO ports, many with Assert
IRQ/SMI/PWUREQ capability. It is PC99 and ACPI compliant, and offers a single-chip solution to the most commonly
used PC I/O peripherals.
ACCESS.bus Interface, SMBus physical layer compatible
q
Serial IRQ support (15 options)
Interrupt Serializer (11 Parallel IRQs to Serial IRQ)
Bus interface, based on Intel’s LPC Interface Specification Revision 1.0, September 29th, 1997
51 GPIO Ports (39 standard, including 23 with Assert
IRQ/SMI/PWUREQs interrupts; 12 VSB powered)
•
•
Blinking LEDs
•
128-pin PQFP Package
5V tolerant and back-drive protected pins (except LPC
pins)
Block Diagram
Serial
Interface
Serial Port 1
VDD
VBAT
VSB
Serial Port 2
with IR
I/O
Ports
Serial Infrared
Interface Interface
System Wake-Up
Control
GPIO Ports
ACCESS.bus
Interface
Power Wake-Up PWUREQ SCL
Control Events
SDA
Floppy Drive
Interface
Floppy Disk
Controller
WATCHDOG
Timer
WDO
LPC Serial
Parallel Port
Interface IRQ SMI
Interface
IEEE 1284
Parallel Port
Fan Speed
Control & Monitor
Bus
Interface
Keyboard &
Mouse Controller
3 Control 3 Monitor Keyboard Ports
Outputs
Inputs & Mouse I/F
Interrupt
Serializer
Parallel
IRQs
National Semiconductor is a registered trademark of National Semiconductor Corporation. All other brand or product names
are trademarks or registered trademarks of their respective holders.
© 2000 National Semiconductor Corporation
www.national.com
PC87364 128-Pin LPC SuperI/O with Extended Wake-Up and Protection Support
July 2000
Revision 2.0
