Interrupt Sources - Renesas H8S/2100 Series Hardware Manual

15.7

Interrupt Sources

The CIR has six interrupt source flags for this LSI. Setting the corresponding enable bit to 1
enables the relevant interrupt request to be issued. Since the six interrupt requests are allocated to
one vector address, it is necessary for the CPU to check the interrupt request flags in order to
determine which interrupt source has caused the interrupt to be requested.
Table 15.7 Interrupt Sources
Interrupt Name
CIRII
Interrupt Source Flags
REND Receive end
OVRF Overrun error
REPF Repeat detection
FRF Framing error
ABF Abort
HEADF Header detection
Section 15 CIR Interface
Interrupt Enable Bit
RENDIE
OVEIE
REPIE
FREIE
ABIE
HEADFIE
Rev. 1.00 May 09, 2008 Page 451 of 954
REJ09B0462-0100