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ST78C36CJ44

Description
ECP/EPP Parallel Printer Port with 16-Byte FIFO
Categorysemiconductor    Analog mixed-signal IC   
File Size263KB,28 Pages
ManufacturerExar [Exar Corporation]
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ST78C36CJ44 Overview

ECP/EPP Parallel Printer Port with 16-Byte FIFO

xr
AUGUST 2005
ST78C36/36A
ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
REV. 5.0.2
GENERAL DESCRIPTION
The ST78C36/36A is a monolithic Parallel Port
Interface for use with IBM PC compatible platforms.
Operation as a standard Centronics printer port is the
default, but software may re-configure the device to
support bi-directional IBM PS/2 parallel port,
Enhanced Parallel Port (EPP), or the Extended
Capabilities Port (ECP, as defined by Hewlett
Packard and Microsoft) modes. The ECP modes are
supported by a 16 byte FIFO that may be accessed
by programmed I/O or DMA cycles.
APPLICATIONS
Printers, Scanners and other peripherals
ZIP Drives and back up drives
Printer Server
Embedded Applications
FEATURES
IBM AT bus compatible
Bi-directional port capability
16 byte FIFO for ECP modes
On-chip oscillator (ST78C36A, ST78C36CQ64)
Software selectable Interrupt (5, 7, or 9) and 8-bit
DMA channel (ST78C36CQ64)
F
IGURE
1. ST78C36/36A B
LOCK
D
IAGRAM
D0-D7
-IOR
-IOW
RESET
Data bus
&
Control Logic
Printer
FIFO
Registers
Inter Connect Bus Lines
&
Control signals
Printer
Data
Ports
PD0-PD7
A0-A2
A10
-CS
AEN
-IOR, -IOW
-IRQx
IOCHRDY
DRQx
PDIR
TC
-DACKx
Register
Select
Logic
Printer
Control
Logic
-STROBE
INIT
-AUTOFDX
-SELCTIN
PE, SELECT
BUSY, -ACK
-ERROR
Clock
&
Timing
Generator
Interrupt
Control
Logic
XTAL2
XTAL1
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com

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