pc87317vul National Semiconductor Corporation, pc87317vul Datasheet - Page 2

• Manufacturer Part Number: pc87317vul
• Description: Pc87317vul/pc97317vul Superi/o Plug And Play Compatible With Acpi Compliant Controller/extender
• Manufacturer: National Semiconductor Corporation

www.national.com
Features
100% compatibility with PnP requirements specified in
the “ Plug and Play ISA Specification ”, ISA, EISA, and
MicroChannel architectures
A special PnP module that includes:
— Flexible IRQs, DMAs and base addresses that meet
— PnP ISA mode (with isolation mechanism – Wait for
— Motherboard PnP mode
An FDC that provides:
— A modifiable address that is referenced by a 16-bit
— Software compatibility with the PC8477, which con-
— 13 IRQ channel options
— Four 8-bit DMA channel options
— 16-byte FIFO
— Burst and non-burst modes
— A new, high-performance, internal, digital data sep-
— Support for standard 5.25" and 3.5" floppy disk
— Automatic media sense support
— Perpendicular recording drive support
— Three-mode Floppy Disk Drive (FDD) support
— Full support for the IBM Tape Drive Register (TDR)
A KBC with:
— A modifiable address that is referenced by a 16-bit
— 13 IRQ options for the Keyboard Controller
— 13 IRQ options for the Mouse Controller
— An 8-bit microcontroller
— Software compatibility with 8042AH and PC87911
— 2 KB of custom-designed program ROM
— 256 bytes of RAM for data
— Five programmable dedicated open drain I/O lines
— Asynchronous access to two data registers and one
— Support for both interrupt and polling
— 93 instructions
— An 8-bit timer/counter
— Support for binary and BCD arithmetic
— Operation at 8 MHz,12 MHz or 16 MHz (programma-
the PnP requirements specified by Microsoft
their 1995 hardware design guide for Windows
PnP ISA Revision 1.0A
Key state)
programmable register
tains a superset of the floppy disk controller func-
tions in the DP8473, the NEC PD765A and the
N82077
arator that does not require any external filter com-
ponents
drives
implementation of AT and PS/2 drive types
programmable register, reported as a fixed address
in resource data
microcontrollers
for keyboard controller applications
status register during normal operation
ble option)
®
®
and
Highlights
in
2
— Customizing by using the PC87323VUL, which in-
An RTC that has:
— A modifiable address that is referenced by a 16-bit
— 13 IRQ options, with programmable polarity
— DS1287, MC146818 and PC87911 compatibility
— 242 bytes of battery backed up CMOS RAM in two
— Selective lock mechanisms for the RTC RAM
— Battery backed up century calendar in days, day of
— Battery backed-up time of day in seconds, minutes
— BCD or binary format for time keeping
— Three different maskable interrupt flags:
— Separate battery pin, 2.4 V operation that includes
— 2 A maximum power consumption during power
— Double-buffer time registers
ACPI Controller/Extender that supports the require-
ments of the ACPI spec (rev 1.0):
— Power Management Timer
— Power Button
— Real Time Clock Alarm
— Suspend modes via software emulation
— PnP SCI
— Global Lock mechanism
— General Purpose events
— Date of Month Alarm
— Century byte
An APC that controls the main power supply to the sys-
tem, using open-drain output, as follows:
Power turned on when:
— The RTC reaches a pre-determined wake-up centu-
— A high to low transition occurs on the RI input signals
— A ring pulse or pulse train is detected on the RING
— A SWITCH input signal indicates a Switch On event
— Any one of seven programmable Power Manage-
Powered turned off when:
— A SWITCH input signal indicates a Switch Off event
cludes a RAM-based KBC, as a development plat-
form
PC87317VUL
programmable register
banks
the week, date of month, months, years and century,
with automatic leap-year adjustment
and hours that allows a 12 or 24 hour format and ad-
justments for daylight savings time
•
•
•
an internal UL protection resistor
down
ry, date and time selection
of the UARTs
input signal
with a debounce-protection
ment external trigger events occur
Periodic interrupts - At intervals from 122 msec
to 500 msec
Time-of-Month alarm - At intervals from once per
second to once per Month
Updated Ended Interrupt - Once per second
upon completion of update
for
keyboard
controller
code
for
the