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PC87351 Datasheet

PC87351 PC98 and ACPI Compliant SuperI/O with System Wake-Up Control

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PRELIMINARY
May 1998
PC87351 PC98 and ACPI Compliant SuperI/O with
System Wake-Up Control
Highlights
General Description
The PC87351, a member of National Semiconductor’s Su-
perI/O family of integrated PC peripherals, is a 128-pin,
PC98 and ACPI compliant SuperI/O that offers a single-chip
solution to the most commonly used ISA peripherals.
The PC87351 incorporates: a Floppy Disk Controller (FDC)
which is available also on the Parallel Port pins as a multi-
plexed option (PPM), two enhanced Serial Ports, Infrared
Comunication Port (HP-SIR, Sharp-IR, and Consumer
Electronics-IR), a full IEEE 1284 Parallel Port, a Keyboard
and Mouse Controller (KBC), System Wake-Up Control
(SWC), General-Purpose Input/Output (GPIO) Ports with
assert interrupt capability, and Fan Speed Control (FSC).
Outstanding Features
Fan Speed Control for two fans
11 General-Purpose I/O Ports, bi-directional, with in-
terrupt assertion capability
System Wake-Up Control powered by VSB, generates
power-up request in response to preprogrammed key-
board or mouse sequence, modem, telephone ring,
and two general-purpose events without an external
clock
Serial or parallel IRQ support
Programmable write protect for Floppy Disk Controller
Power-fail recovery support
Block Diagram
Serial
Interface
Serial Infrared
Interface Interface
Floppy Drive
Interface
Parallel Port/
Floppy Drive
Interface
PPM
ISA
Interface SERIRQ
Serial Port 1
Serial Port 2
with IR
Floppy Disk
Controller
IEEE 1284
Parallel Port
Host Interface
VSB
VBAT
System Wake-Up
Control
Fan Speed Control
General-Purpose
I/O
Keyboard and Mouse
Controller
Wake-Up PWUREQ FANOUT0 FANOUT1
Events
I/O Ports Keyboard and Mouse Ports
Interface
IBM®, MicroChannel®, PC-AT® and PS/2® are registered trademarks of International Business Machines Corporation.
Microsoft® and Windows® are registered trademarks of Microsoft Corporation.
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation
www.national.com


National Semiconductor Electronic Components Datasheet

PC87351 Datasheet

PC87351 PC98 and ACPI Compliant SuperI/O with System Wake-Up Control

No Preview Available !

Highlights (Continued)
Features
PC98 and ACPI Compliant
PnP Configuration Register structure
Flexible resource allocation for all logical devices
t Relocatable base address
t 9 Parallel IRQ or 15 Serial IRQ routing options
t 3 optional 8-bit DMA channels (where applica-
ble)
Floppy Disk Controller (FDC)
Software compatible with the PC8477, which con-
tains a superset of the FDC functions in the
µDP8473, the NEC µPD765A and the N82077
16-byte FIFO
Burst and non-burst modes
High-performance, digital data separator that does
not require any external filter components
Standard 5.25" and 3.5" Floppy Disk Drive (FDD)
support
Perpendicular recording drive support
Three-mode FDD support
Full support for IBM Tape Drive Register (TDR) im-
plementation of AT and PS/2 drive types
Programmable write protect
Parallel Port
Software or hardware control
Enhanced Parallel Port (EPP) compatible with new
version EPP 1.9 and IEEE 1284 compliant
EPP support for version EPP 1.7 of the Xircom spec-
ification
EPP support as mode 4 of the Extended Capabilities
Port (ECP)
IEEE 1284 compliant ECP, including level 2
Selection of internal pull-up or pull-down resistor for
Paper End (PE) pin
PCI bus utilization reduction by supporting a de-
mand DMA mode mechanism and a DMA fairness
mechanism
Protection circuit that prevents damage to the paral-
lel port when a printer connected to it powers up or
is operated at high voltages, even if the device is in
power-down
Output buffers that can sink and source 14 mA
Parallel Port Multiplexer (PPM)
Additional set of FDC signals multiplexed on Parallel
Port pins
Optional connection of additional, external FDD on
Parallel Port connector
Serial Port 1
Software compatible with the 16550A and the 16450
Shadow register support for write-only bit monitoring
UART data rates up to 1.5 Mbaud
Serial Port 2 with Infrared
Software compatible with the 16550A and the 16450
Shadow register support for write-only bit monitoring
UART data rates up to 1.5 Mbaud
HP-SIR
ASK-IR option of SHARP-IR
DASK-IR option of SHARP-IR
Consumer Remote Control supports RC-5, RC-6,
NEC, RCA and RECS 80
Non-standard DMA support 1 or 2 channels
Keyboard and Mouse Controller (KBC)
8-bit microcontroller
Software compatible with the 8042AH and PC87911
microcontrollers
2 KB custom-designed program ROM
256 bytes RAM for data
Four programmable dedicated open-drain I/O lines
Asynchronous access to two data registers and one
status register during normal operation
Support for both interrupt and polling
93 instructions
8-bit timer/counter
Support for binary and BCD arithmetic
Operation at 8 MHz,12 MHz or 16 MHz (programma-
ble option)
Can be customized by using the PC87323, which in-
cludes a RAM-based KBC as a development plat-
form for KBC code
11 General-Purpose Bi-Directional I/O (GPIO) Ports
11 GPIO pins with interrupt assertion capability
Programmable drive type for each output pin (open-
drain, push-pull or output disable)
Programmable option for internal pull-up resistor on
each input pin
Output lock option
Back-drive protection circuit
System Wake-Up Control (SWC)
Power-up request upon detection of Keyboard,
Mouse, RI1, RI2, RING, PME1 and PME2 activity, as
follows:
t Preprogrammed Keyboard or Mouse sequence
t External modem ring on serial ports
t Ring pulse or pulse train on the RING input
t General purpose events, PME1 and PME2
Optional routing of power-up request on IRQ line
Powered by VSB
Battery-backed wake-up setup
Power-fail recovery support
www.national.com
2


Part Number PC87351
Description PC87351 PC98 and ACPI Compliant SuperI/O with System Wake-Up Control
Maker National Semiconductor
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