ST78C34 Exar Corporation, ST78C34 Datasheet - Page 3

• Manufacturer Part Number: ST78C34
• Description: General Purpose Parallel Printer Port With 83 Byte Fifo
• Manufacturer: Exar Corporation

Figure 2, BLOCK DIAGRAM
INTSEL
RESET
D0-D7
A0-A1
-IOW
-IOR
Rev. 3.00
INT
-CS
Registers
6-5
Printer
FIFO
Generator
Printer
Timing
Clock
Ports
Data
Control
Printer
&
Logic
ST78C34
PD0-PD7
PE, SELECT
BUSY, -ACK
-ERROR
-STROBE
INIT
-AUTOFDX
-SELCTIN
XTAL2
XTAL1