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PC87373 Datasheet

  • PC87373

  • LPC SuperI/O with Glue Functions

  • 174頁

  • NSC

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PC87373 LPC SuperI/O with Glue Functions
Preliminary
October 2002
Revision 1.1
PC87373
LPC SuperI/O with Glue Functions
General Description
The National Semiconductor
廬
PC87373 Advanced I/O prod-
uct is a member of the PC8737x SuperI/O family. All
PC8737x devices are highly integrated and are pin and soft-
ware compatible, thus providing drop-in interchangeability
and enabling a variety of assembly options using only a sin-
gle motherboard and BIOS.
PC87373 integration allows for a smaller system board size and
saves on total system cost.
The PC87373 includes legacy SuperI/O functions, system
glue functions, fan monitoring and control, commonly used
functions such as GPIO, and ACPI-compliant Power Man-
agement support.
The PC87373 integrates miscellaneous analog and digital
system glue functions to reduce the number of discrete
components required. The host communicates with the
functions integrated in the PC87373 device through an LPC
Bus Interface.
The PC87373 Legacy functions are: two serial ports, a fully
compliant IEEE 1284 Parallel Port, a Floppy Disk Controller
(FDC), a Keyboard/Mouse Controller (KBC), a Game Port
and a MIDI Port.
The Fan Speed Control and Monitor (FSCM) module allows
the system to monitor and control three fans.
The PC87373 extended wake-up support complements the
ACPI controller in the chipset. The System Wake-Up Control
(SWC) module, powered by V
SB3
, supports a flexible wake-
up mechanism.
There are 13 General-Purpose Input/Output (GPIO) ports;
these allow system control and wake-up on system events.
Outstanding Features
s
Legacy modules: Parallel Port, Floppy Disk Controller
(FDC), two Serial Ports, Keyboard and Mouse Control-
ler (KBC), Game Port and MIDI Port
Glue functions to complement the South Bridge func-
tionality
Fan Speed monitoring and control of three fans
V
SB3
-powered Power Management with 20 wake-up
sources
Controls three LED indicators
13 GPIO ports with a variety of wake-up options
LPC interface, based on Intel鈥檚
LPC Interface Specifica-
tion Revision 1.0, September 29th, 1997
PC01 Revision 1.0
and
Advanced Configuration and Pow-
er Interface (ACPI) Specification Revision 2.0
compliant
128-pin PQFP package
s
s
s
s
s
s
s
s
Block Diagram
14.31818 MHz
MIDI Joystick Serial
Serial
Interface Interface Interface Interface
MIDI
Port
Game
Port
Serial
Port 1
Serial
Port 2
Parallel
Port
Interface
Floppy
KBC
LPC Serial
PS/2
Drive
Interface Interfaces Ports Interface IRQ
Clock
Generator
IEEE 1284
Parallel
Port
Floppy
Disk
Controller
Keyboard
& Mouse
Controller
LPC Bus
Interface
V
DD3
48 MHz
Internal Bus
Fan Speed
Control and
Monitor
Tachometer PWM
Inputs Outputs
Glue
Functions
System
Wake-Up
Control
GPIO Ports
PnP
Configuration
Registers
V
SB3
Wake-Up PME
Miscellaneous
V
BAT
Events
LEDs
I/O
I/O
Ports
32.768 KHz
National Semiconductor is a registered trademark of National Semiconductor Corporation. All other brand or product names are trademarks or registered trade-
marks of their respective holders.
漏
2002 National Semiconductor Corporation
www.national.com

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