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Section 16 I
2
C Bus Interface 2 (IIC2)
Rev. 4.00 Sep. 14, 2005 Page 506 of 982
REJ09B0023-0400
16.5 Interrupt
Request
There are six interrupt requests in this module; transmit data empty, transmit end, receive data full,
NACK receive, STOP recognition, and arbitration lost/overrun error. Table 16.3 shows the
contents of each interrupt request.
Table 16.3 Interrupt Requests
Interrupt Request
Abbreviation
Interrupt Condition
I
2
C Mode
Clocked
Synchronous
Mode
Transmit data Empty
TXI
(TDRE=1)
•
(TIE=1)
{
{
Transmit end
TEI (TEND=1)
•
(TEIE=1)
{
{
Receive data full
RXI (RDRF=1)
•
(RIE=1)
{
{
STOP recognition
STPI (STOP=1)
•
(STIE=1)
{
×
NACK receive
{
×
Arbitration lost/
overrun error
NAKI {(NACKF=1)+(AL=1)}
•
(NAKIE=1)
{
{
When the interrupt condition described in table 16.3 is 1, the CPU executes an interrupt exception
handling. Interrupt sources should be cleared in the exception handling. The TDRE and TEND
bits are automatically cleared to 0 by writing the transmit data to ICDRT. The RDRF bit is
automatically cleared to 0 by reading ICDRR. The TDRE bit is set to 1 again at the same time
when the transmit data is written to ICDRT. When the TDRE bit is cleared to 0, then an excessive
data of one byte may be transmitted.
Содержание HD6417641
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Страница 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
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Страница 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Страница 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
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Страница 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Страница 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Страница 500: ...Section 13 Direct Memory Access Controller DMAC Rev 4 00 Sep 14 2005 Page 450 of 982 REJ09B0023 0400...
Страница 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Страница 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Страница 734: ...Section 18 Multi Function Timer Pulse Unit MTU Rev 4 00 Sep 14 2005 Page 684 of 982 REJ09B0023 0400...
Страница 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Страница 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Страница 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Страница 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Страница 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
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