Parallel Mode 2; Signal Descriptions - Lexmark X644E Technical Reference Manual

Parallel Mode 2

Parallel Mode 2 is a feature available for many Lexmark printers. The factory default
setting is
The timing required by the printer is clearly indicated in "Standard Protocol Data
Transfer Sequence" on page 8-11. This is the classic Centronics interface timing.
By setting
Professional, or through a PJL command, the printer changes when data is valid.
Once
trailing edge of STROBE. This is the last possible host driven transition where data
should be valid.
If
Parallel Mode 2
eliminating any IEEE 1284 data flow control.
Note:

Signal Descriptions

STROBE Receiver for the Lexmark X644e and X646e
The following diagram illustrates the STROBE receiver for the Lexmark X644e and
X646e.
Connector
Pin
.
On
to
Parallel Mode 2 Off
is set to
Parallel Mode 2 Off
is , the printer automatically turns
Off
You may find this feature helpful when having data transfer reliability
problems.
GND
8-15
from the printer operator panel, through MarkVision
, the printer takes data from the host computer at the
Advanced Status
74LVC161284
470 ±10%
Interfaces
to ,
Off