PC87383 datasheet(2/77 Pages) NSC

2 / 77 page

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Revision 1.1

Features

s LPC System Interface

— Synchronous cycles, up to 33 MHz bus clock

— 8-bit I/O cycles

— Up to four 8-bit DMA channels

— LPCPD and CLKRUN support

— Implements PCI mobile design guide recommenda-

tion (PCI Mobile Design Guide 1.1, Dec. 18, 1998)

s PC2001 and ACPI Compliant

— PnP Conﬁguration Register structure

— Flexible resource allocation for all logical devices

❏ Relocatable base address

❏ 15 IRQ routing options

❏ Three optional 8-bit DMA channels (where appli-

cable) selected from four possible DMA chan-

nels

s Clock Sources

— 14.318 MHz or 48 MHz clock input

— LPC clock, up to 33 MHz

s Power Supply

— 3.3V supply operation

— All pins are 5V tolerant, except LPC bus pins

— All pins are back-drive protected, except LPC bus

pins

s 21 General-Purpose I/O (GPIO) Ports

— 14 support assert IRQ

— 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

— Programmable option for input debounce mecha-

nism

s Serial Port (SP1)

— Software compatible with the 16550A and the 16450

— Shadow register support for write-only bit monitoring

— UART data rates up to 1.5 Mbaud

s IEEE 1284-compliant Parallel Port

— ECP, with Level 2 (14 mA sink and source output

buffers)

— Software or hardware control

— Enhanced Parallel Port (EPP) compatible with EPP

1.7 and EPP 1.9

— Supports EPP as mode 4 of the Extended Control

— Selection of internal pull-up or pull-down resistor for

Paper End (PE) pin

— Supports a demand DMA mode mechanism and a

DMA fairness mechanism for improved bus utiliza-

tion

— Protection circuit that prevents damage to the

parallel port when a printer connected to it is pow-

ered up or is operated at high voltages (in both

cases, even if the PC87383 is in power-down state)

s Fast Infrared Port (FIR)

— Software compatible with the 16550A and the 16450

— Shadow register support for write-only bit monitoring

— FIR IrDA 1.1 compliant

— 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

— DMA support: 1 or 2 channels

s Strap Conﬁguration

— Base Address (BADDR) strap to determine the base

address of the Index-Data register pair

— Strap Inputs to select testability mode

s Testability

— XOR Tree

— TRI-STATE device pins

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