AMT Datasouth AMTACCEL-5350 - Manual (Page 169)

User's Guide
Interfaces C-5
Setting Parallel Parameters
Four Setup menu parameters affect the parallel interface: STROBE,
BUSY, ACK and DAT BITS. For more information on these param-
eters, refer to the Control Panel section in this guide.
Pin Assignments
Table C-1 lists the parallel connector pin assignments and signal require-
ments.
Table C-1. Parallel Pin Assignments
Pin Signal Source Printer Usage
1 STROBE– Computer Must pulse low for at least 0.5 micro-
second to clock data on DB1-DB8 lines;
data must be present for at least 0.5
microsecond before and after pulse. You
can control whether the printer captures
the data byte on the leading or trailing
edge of the STROBE– pulse by setting the
STROBE parameter on the Setup menu
2 DB1 Computer Must contain eight bits of parallel data
3 DB2 Computer byte (DB1 = LSB); high signal repre-
4 DB3 Computer sents logical "1", low signal represents
5 DB4 Computer logical "0"
6 DB5 Computer
7 DB6 Computer
8 DB7 Computer
9 DB8 Computer
10 ACK– Printer Pulses low for at least 4 microseconds
when printer has received data byte on
DB1-DB8 lines and is ready for another;
also pulses low when printer is turned on
or reset
User's Guide
Interfaces C-5
Setting Parallel Parameters
Four Setup menu parameters affect the parallel interface: STROBE,
BUSY, ACK and DAT BITS. For more information on these param-
eters, refer to the Control Panel section in this guide.
Pin Assignments
Table C-1 lists the parallel connector pin assignments and signal require-
ments.
Table C-1. Parallel Pin Assignments
Pin Signal Source Printer Usage
1 STROBE– Computer Must pulse low for at least 0.5 micro-
second to clock data on DB1-DB8 lines;
data must be present for at least 0.5
microsecond before and after pulse. You
can control whether the printer captures
the data byte on the leading or trailing
edge of the STROBE– pulse by setting the
STROBE parameter on the Setup menu
2 DB1 Computer Must contain eight bits of parallel data
3 DB2 Computer byte (DB1 = LSB); high signal repre-
4 DB3 Computer sents logical "1", low signal represents
5 DB4 Computer logical "0"
6 DB5 Computer
7 DB6 Computer
8 DB7 Computer
9 DB8 Computer
10 ACK– Printer Pulses low for at least 4 microseconds
when printer has received data byte on
DB1-DB8 lines and is ready for another;
also pulses low when printer is turned on
or reset