CD1284 Datasheet, PDF (70/176 Pages) Intel Corporation – IEEE 1284-Compatible Parallel Interface Controller with Two High-Speed Asynchronous Serial Ports

CD1284 — IEEE 1284-Compatible Parallel Interface Controller
Figure 10. CD1284 Transmit Character Processing
READY FOR NEXT
CHARACTER
DELAY
N
TIME
= ‘0’
?
Y
REPEAT
Y
CHAR MODE
ACTIVE
?
N
N
EMBEDDED
COMMAND IN
PROGRESS
?
Y
RESET EMBEDDED
COMMAND IN
PROGRESS
DECREMENT
COUNT, SEND
‘SPACE’
N
COUNT
=0
?
Y
CLEAR REPEAT
CHAR MODE
CHAR
Y
= X’81
?
N
SEND
BREAK
CHAR
= X’82
?
N
Y
SET DELAY
TIME USING
NEXT CHAR
A
B
C
70
Datasheet