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ST78C36

Exar Corporation
Part Number ST78C36
Manufacturer Exar Corporation
Description ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO
Published Aug 28, 2006
Detailed Description www.DataSheet4U.com áç FEBRUARY 2004 ST78C36/36A ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO REV. 5.0.1 GENERAL D...
Datasheet PDF File ST78C36 PDF File

ST78C36
ST78C36

Overview
www.
DataSheet4U.
com áç FEBRUARY 2004 ST78C36/36A ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO REV.
5.
0.
1 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) FIGURE 1.
ST78C36/36A BLOCK DIAGRAM D0-D7 -IOR -IOW RESET Data bus & Control Logic Printer FIFO Registers DataSheet4U.
com Printer Data Ports PD0-PD7 DataShee Inter Connect Bus Lines & Control signals 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 DataSheet4U.
com Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.
exar.
com DataSheet 4 U .
com www.
DataSheet4U.
com ST78C36/36A ECP/EPP PARALLEL PRINTER PORT WITH 16-BYTE FIFO FIGURE 2.
ST78C36/36A PIN OUT ASSIGNMENTS -ERROR DRQ2 DRQ1 BUSY SLCT -ACK -IOW áç REV.
5.
0.
1 GND VCC -IOR N.
C.
50 64 63 62 61 60 59 58 57 56 55 54 53 52 51 N.
C.
-DACK2 DRQ3 NOTE: PINOUTS NOT TO SCALE.
THE 64-TQFP PACKAGE IS PHYSICALLY SMALLER THAN THE 44-PLCC PACKAGE.
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