Xerox 4215, Installation Planning Manual, Page: 52 / 83

INTERFACE SUPPORT
Parallel interface timing diagram
Figure B-4 illustrates the parallel interface timing. Refer to Table
B-2 for timing requirements.
Figure B-4. Parallel interface timing diagram
Table B-2. Timing requirements
* Signal is active low
Parameter
Value
Min Max
1 Data Setup Time before STROBE* True 1.0
µ
s
2 Data Hold Time after STROBE False 1.0 µ s
3 STROBE* True pulse width 1.0 µ s 500 µ s
4 STROBE* True to BUSY True 0 1.5
µ
s
5 BUSY True duration when receiving data 2.6 µ s 5.1 µ s
6 ACKNOWLEDGE* False to BUSY False 0 10 µ s
7 ACKNOWLEDGE* True pulse width 2.5 µ s 5.0 µ s
8 BUSY False to start of next cycle 0
9 BUSY True before:
ERROR* set True
SELECT set False
PAPER ERROR set True 1.0
µ
s
10 ACKNOWLEDGE True after:
ERROR set False
SELECT set True
PAPER ERROR set False
1.0 µ s
XEROX 4219/MRP AND 4215/MRP INSTALLATION PLANNING GUIDE B-5