PC87351 datasheet(2/86 Pages) NSC

2 / 86 page

Highlights (Continued)

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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

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