Freescale Semiconductor MCF52277 Reference Manual page 722

UART Modules
ABRKI
ABRKI1
Address On System
Warm Start Address
SIRQR
Figure 30-25. UART Mode Programming Flowchart (Sheet 4 of 5)
30-32
SIRQ
Was
N
IRQ Caused
By Beginning
Of A Break?
Y
Clear Change-in-
Break Status Bit
Has
N
End-of-break
IRQ Arrived
Yet?
Y
Clear Change-in-
Break Status Bit
Remove Break
Character From
Receiver FIFO
Replace Return
Stack And Monitor
RTE
MCF52277 Reference Manual, Rev. 1
INCH
Does
N
Channel A
Receiver Have A
Character?
Y
Place Character
In D0
Return
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