March 1998
PC87307/PC97307 Plug and Play Compatible and PC97
Compliant SuperI/O
Highlights
General Description
The PC87307/PC97307 (VUL) are functionally identical
parts that offer a single-chip solution to the most commonly
used ISA, EISA and MicroChannel® peripherals. This fully
Plug and Play (PnP) compatible chip incorporates a Floppy
Disk Controller (FDC), a Keyboard and mouse Controller
(KBC), a Real-Time Clock (RTC), two fast full function
UARTs, Infrared (IR) support, a full IEEE 1284 parallel port,
three general purpose chip select signals that can be programmed for game port control, and a separate configuration register set for each module. It also provides support for
power management (including a WATCHDOG timer) and
standard PC-AT address decoding for on-chip functions.
The Plug and Play (PnP) support in the device conforms to
the “Plug and Play ISA Specification” Version 1.0a, May 5,
1994.
The Infrared (IR) interface complies with the IrDA 1.0 SIR
and SHARP-IR standards, and supports all four basic protocols for Consumer-IR (TV-Remote) circuitry (RC-5, RC-5
extended, RECS80 and NEC).
Features
s 100% compatible with Plug and Play requirements
specified in the “Plug and Play ISA Specification”, ISA,
EISA, and MicroChannel architectures
s Meets PC97 requirements
Block Diagram
DMA
IRQ Channels
Plug and Play
(PnP)
Control
Data
Real-Time Clock
(RTC and APC)
(Logical Device 2)
Control
Serial Infrared
Interface Interface Interrupt
X-Bus
Two UARTs + IR
(16550 or 16450)
(Logical Devices 5 & 6)
µP Address
Data and
Control
Floppy Disk
Controller (FDC)
with Digital Data Floppy
Separator (DDS) Drive
Interface
(PC8477)
(Logical Device 3)
Keyboard
Controller (KBC)
(Logical Device 0)
Power Management
Logic
(Logical Device 8)
IEEE1284
Parallel Port
(Logical Device 4)
Mouse
Controller
(Logical Device 1)
General Purpose
I/O Registers
(Logical Device 7)
Data and
Control
I/O Ports
High Current Driver
Data and
Control
Ports
Control
Data
Handshake
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
IBM®, MicroChannel®, PC-AT® and PS/2® are registered trademarks of International Business Machines Corporation.
Microsoft® and Windows® are registered trademarks of Microsoft Corporation.
© 1998 National Semiconductor Corporation
www.national.com
PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
PRELIMINARY
