Oki Okipage 8p, Maintenance Manual, Page: 117 / 190

B - 3
(4) Signal level
• LOW : 0 V to +0.8 V
• HIGH : +2.4 V to 5.0 V
(5) Interface circuit
• 8p • 8w
a) Receiving circuit a) Receiving circuit
b) Sending circuit b) Sending circuit
R = 3.3K
Ω
(1.0-K
Ω
STROBE)
+5V
R
(Open Collector)
+5V
3.3K
Ω
(6) Timing charts
a) Data receiving timing (compatible mode)
PARALLEL DATA
(DATA BITs 1 to 8)
DATA STROBE
ACKNOWLEDGE
BUSY
0.5
µ
s min.
0.5
µ
s min.
0.5
µ
s min.
0.5
µ
s max.
0.5
µ
s min.
0 min.
0 min.
0 min.
0.5
µ
s to 10
µ
s
0 min.
b) INPUT PRIME timing (when the INPUT PRIME signal is enabled)
INPUT. PRIME
SELECT
ACKNOWLEDGE
BUSY
0 min.
50 ms min.
5
µ
s max.
5
µ
s max.
0.5
µ
s to 10 ms
R = 3.3K
Ω
(1.0-K
Ω
STROBE)
+5V
R
(Open Collector)
+5V
3.3K
Ω