Datasheet

Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]
Rev. 6.00 Mar. 18, 2010 Page 540 of 982
REJ09B0054-0600
14.5 Interrupt Sources
Figures 14.13 and 14.14 show the transmit and receive interrupt sources, respectively.
DTC
IETxI (TxRDY interrupt)
Note: * The TxE flag is set at the timing when an error source of IETEF occurs. The TxE flag can be cleared even
when the error source flag in IETEF is set to 1 because the TxE flag is not logically ORed with flags in IETEF.
IETSR
IETSI
(Transmit status
interrupt)
TxRDY
IRA
IRAE
TxSE
IETEF
AL
UE
TTME
RO
ACK
TxFE
TxEE
TxS
TxF
(*)
TxE
TxRDYE
IEIET
CPU
Figure 14.13 Relationships among Transfer Interrupt Sources
DTC
IERSR
IERSI
(Transmit status
interrupt)
IERxI (RxRDY interrupt)
RxRDY
RxSE
IEREF
OVE
RTME
DLE
PE
RxFE
RxEE
RxS
RxF
(*)
RxE
RxRDYE
IEIER
CPU
Note: * The RxE flag is set at the timing when an error source of IEREF occurs. The RxE flag can be cleared even
when the error source flag in IEREF is set to 1 because the RxE flag is not logically ORed with flags in IEREF.
Figure 14.14 Relationships among Receive Interrupt Sources