Freescale Semiconductor, Inc.
OUTCH
POUCH
IS
CHANNEL A
TRANSMITTER
READY
IS
N
CHANNEL B
TRANSMITTER
READY
N
?
?
Y
Y
SEND CHARACTER
IN D0 TO CHANNEL
B TRANSMITTER
SEND CHARACTER
IN D0 TO CHANNEL A
TRANSMITTER
WAS
CHARACTER A
CARRIAGE
RETURN
?
WAS
CHARACTER A
CARRIAGE
RETURN
?
N
N
Y
Y
OUTCHI
POUCHI
IS
CHANNEL A
TRANSMITTER
READY
IS
CHANNEL B
TRANSMITTER
READY
N
N
?
?
Y
Y
SEND A LINE
FEED CHARACTER TO
CHANNEL A
SEND A LINE
FEED CHARACTER TO
CHANNEL B
TRANSMITTER
TRANSMITTER
OUTCHR
RETURN
POUTCHR
RETURN
Figure 7-10. Serial Module Programming Flowchart (5 of 5)
MOTOROLA
MC68340 USER’S MANUAL
7- 45
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