TMP92CF30
2009-06-12
92CF30-49
Figure 3.5.1 Interrupt processing Sequence
Interrupt processing
Interrupt vector calue “V”
read interrupt request F/F clear
Interrupt specified
by DMA
start vector ?
PUSH PC
PUSH SR
SR<IFF2:0>
←
Level of
accepted
interrupt
+
1
INTNEST
←
INTNEST
+
1
PC
←
(FFFF00H
+
V)
Interrupt processing
program
RETI instruction
POP SR
POP PC
INTNEST
←
INTNEST
−
1
End
Clear interrupt request flag
YES
NO
Data transfer by micro
DMA
COUNT
←
COUNT
−
1
COUNT
=
0
NO
Clear vector register
generating micro DMA
transfer end interrupt
(INTTC0)
YES
Micro DMA
processing
General-purpose
interrupt
processing
DMA soft start
request
Start specified
by HDMA
YES
to HDMA processing flow
NO
Summary of Contents for TLCS-900/H1 Series
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