Table 14.14 Interrupt Sources - Renesas H8S/2368 Series Hardware Manual

Table 14.14 Interrupt Sources

Channel Name Interrupt Source
0 ERI0 Receive Error, detection
RXI0 Receive Data Full
TXI0 Transmit Data Empty
1 ERI1 Receive Error, detection
RXI1 Receive Data Full
TXI1 Transmit Data Empty
2 ERI2 Receive Error, detection
RXI2 Receive Data Full
TXI2 Transmit Data Empty
3 ERI3 Receive Error, detection
RXI3 Receive Data Full
TXI3 Transmit Data Empty
4 ERI4 Receive Error, detection
RXI4 Receive Data Full
TXI4 Transmit Data Empty
Note: * Not supported by the H8S/2366.
In Smart Card interface mode, as in normal serial communication interface mode, transfer can be
carried out using the DTC or DMAC*. In transmit operations, the TDRE flag is also set to 1 at the
same time as the TEND flag in SSR, and a TXI interrupt is generated. If the TXI request is
designated beforehand as a DTC or DMAC* activation source, the DTC or DMAC* will be
activated by the TXI request, and transfer of the transmit data will be carried out. The TDRE and
TEND flags are automatically cleared to 0 when data transfer is performed by the DTC or
DMAC*. In the event of an error, the SCI retransmits the same data automatically. During this
period, the TEND flag remains cleared to 0 and the DTC or DMAC* is not activated. Therefore,
the SCI and DTC or DMAC* will automatically transmit the specified number of bytes in the
event of an error, including retransmission. However, the ERS flag is not cleared automatically
when an error occurs, and so the RIE bit should be set to 1 beforehand so that an ERI request will
be generated in the event of an error, and the ERS flag will be cleared.
When performing transfer using the DTC or DMAC*, it is essential to set and enable the DTC or
DMAC* before carrying out SCI setting. For details on the DTC or DMAC* setting procedures,
refer to section 8, Data Transfer Controller (DTC) or section 7, DMA Controller (DMAC)*.
In receive operations, an RXI interrupt request is generated when the RDRF flag in SSR is set to
1. If the RXI request is designated beforehand as a DTC or DMAC* activation source, the DTC
or DMAC* will be activated by the RXI request, and transfer of the receive data will be carried
Rev. 2.00, 05/03, page 582 of 820
DTC
Interrupt Flag Activation
ORER, PER, ERS Not possible
RDRF Possible
TEND Possible
ORER, PER, ERS Not possible
RDRF Possible
TEND Possible
ORER, PER, ERS Not possible
RDRF Possible
TEND Possible
ORER, PER, ERS Not possible
RDRF Possible
TEND Possible
ORER, PER, ERS Not possible
RDRF Possible
TEND Possible
DMAC*
Activation Priority
Not possible High
Possible
Possible
Not possible
Possible
Possible
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible Low