10. Interrupt Controller (INTC)
Rev.1.00 Jan. 10, 2008 Page 265 of 1658
REJ09B0261-0100
The details of the input control circuit of figure 10.1 are shown in figure 10.2.
NMI
IRQ/
IRL7
to
IRQ/
IRL0
NMI
detector
*
4
Input control
NMI interrupt
request
INTC
IRL
mask
controller
Noise
canceller
Noise
canceller
for level
detection
IRL
detector
*
2
Priority
determination
for external
interrupts
IRQ
detector
*
3
IRL/IRQ
pin mode
controller
*
1
ICR0
ICR1
INTMSK2
INTREQ
INTMSK1
INTMSK0
IRL
IRQ
Notes: 1. The internal si
g
nal for IRQ is fixed when ICR0.IRLMn (n = 0, 1) is cleared to 0, and the
internal si
g
nal for IRL is fixed when ICR0.IRLMn is set to 1 to prevent propa
g
ation of the state
transition on the pin to inside the LSI.
2. IRL detector includes a noise canceller.
When the interrupt source holdin
g
mode bit (ICR0.LVLMODE) is cleared to 0, the interrupt
source bits for the detected IRL interrupt request are retained in the INTC. When
ICR0.LVLMODE = 1, the interrupt source bits are not retained.
In the case of ICR0.LVLMODE = 0, if the IRL interrupt request maskin
g
is set by INTMSK2
after the interrupt source bit is retained, the IRL interrupt request of the source that has
already been retained will not be masked. To clear the retained interrupt request, refer to
section 10.7.1.
3. When the IRQ interrupt is confi
g
ured for level-sense, the interrupt source bit of the IRQ
interrupt detected by this circuit is retained if ICR0.LVLMODE = 0. The interrupt source bits of
the level-sense IRQ are not retained if ICR0.LVLMODE = 1.
4. This circuit detects the NMI interrupt request.
Figure 10.2 Input Control Circuit for the Interrupt Requested from the External Pin
Содержание SH7781
Страница 4: ...Rev 1 00 Jan 10 2008 Page iv of xxx REJ09B0261 0100 ...
Страница 74: ...2 Programming Model Rev 1 00 Jan 10 2008 Page 44 of 1658 REJ09B0261 0100 ...
Страница 272: ...8 Caches Rev 1 00 Jan 10 2008 Page 242 of 1658 REJ09B0261 0100 ...
Страница 376: ...10 Interrupt Controller INTC Rev 1 00 Jan 10 2008 Page 346 of 1658 REJ09B0261 0100 ...
Страница 694: ...13 PCI Controller PCIC Rev 1 00 Jan 10 2008 Page 664 of 1658 REJ09B0261 0100 ...
Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
Страница 788: ...15 Clock Pulse Generator CPG Rev 1 00 Jan 10 2008 Page 758 of 1658 REJ09B0261 0100 ...
Страница 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
Страница 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
Страница 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Страница 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
Страница 1688: ...Appendix Rev 1 00 Jan 10 2008 Page 1658 of 1658 REJ09B0261 0100 ...
Страница 1691: ......
Страница 1692: ...SH7785 Hardware Manual ...