SurePrint SP91 - Page 15

SP91 User Manual
Output Low Voltage V
OL
- 2.0 V power is OFF
+5 V Signal Sender Characteristics
Characteristics Symbol
Specifications
Conditions
Min Max
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
V
OH
V
OL
I
OH
I
OL
*2.4 V
-
-
-**
5.5 V
-**
0.32 mA
-
*I
OH
=0.32 mA
While the power is
OFF
V
OH
=2.4 V
While the power is
OFF
** No guarantee is offered to V
OL
and I
OL
while the power is OFF.
Parallel
Parallel
Parallel
Parallel Data
Data
Data
Data Receiving
Receiving
Receiving
Receiving Timing
Timing
Timing
Timing
Parallel Interface Signal Timing Figure as follows(Compatibility Mode) ：
Reset
Reset
Reset
Reset printer
printer
printer
printer by
by
by
by parallel
parallel
parallel
parallel
To enable the printer reset by nInit signal (PIN 31) in compatibility mode. Set nInit signal by
SWITCH DIP. To enable the printer reset, meet the following signal timing.
The signal is ignored when #36 nSelectIn /1284-Active is high in reverse mode.
· DC characteristic
TTL Level
· AC characteristic
Min reset pluse width ： TRS 50 μ s (min)
NOTE ： The prefix “ n ” named active-low
Reception
Reception
Reception
Reception of
of
of
of status
status
status
status from
from
from
from the
the
the
the printer
printer
printer
printer through
through
through
through the
the
the
the bidirectional
bidirectional
bidirectional
bidirectional parallel
parallel
parallel
parallel interface
interface
interface
interface
In the bidirectional parallel interface specifications, the printer status transmission is available by