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17.5
Interrupt Causes
Total seven interrupt causes exist with the Timer X1, namely, ICIA through ICID, OCIA, OCIB
and FOVI. Table 17.5 given below lists the contents of respective interrupt causes. Respective
interrupt requests can be permitted or prohibited by setting of respective interrupt enabling bits
of the TIER. Also, independent vector addresses are being allocated to respective interrupt
causes.
Table 17.5 Interrupt Causes of the Timer X1
Abbreviations of the Interrupt Causes
Priority Degree
Contents
ICIA
Interrupt request by the ICFA
ICIB
Interrupt request by the ICFB
ICIC
Interrupt request by the ICFC
ICID
Interrupt request by the ICFD
OCIA
Interrupt request by the OCFA
OCIB
Interrupt request by the OCFB
FOVI
Interrupt request by the OVF
High
Low
Summary of Contents for Hitachi H8S/2191
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