Freescale Semiconductor, Inc.
SERIAL MODULE
ENABLA
SINIT
INITIATE:
ANY
Y
ERRORS IN
CHANNEL A
?
CHANNEL A
CHANNEL B
INTERRUPTS
N
CHK1
ENABLE CHANNEL
A'S RECEIVER
POINT TO CHANNEL A
CALL CHCHK
ASSERT CHANNEL A
REQUEST TO SEND
ENABLB
SAVE CHANNEL A
STATUS
ANY
ERRORS IN
CHANNEL B
?
CHK2
Y
POINT TO CHANNEL B
N
CALL CHCHK
ENABLE CHANNEL
B'S TRANSMITTER
SINITR
SAVE CHANNEL B
STATUS
RETURN
Figure 7-10. Serial Module Programming Flowchart (1 of 5)
MOTOROLA
MC68340 USER’S MANUAL
7- 41
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