10. Interrupt Controller (INTC)
Rev.1.00 Jan. 10, 2008 Page 272 of 1658
REJ09B0261-0100
10.2
Input/Output Pins
Table 10.2 shows the pin configuration.
Table 10.2 INTC Pin Configuration
Pin Name
Function
I/O
Description
NMI Nonmaskable
interrupt
input pin
Input
Nonmaskable interrupt request signal input
IRQ/
IRL7
to
IRQ/
IRL0
External
interrupt
input pins
Input
Interrupt request signal input of IRQ7 to IRQ0 or
IRL[7:4]
and
IRL[3:0]
The IRQ/
IRL7
pin is multiplexed with FD7 (FLCTL I/O),
MODE3 (mode control input), and port L1 (GPIO I/O) pin,
the IRQ/
IRL6
pin is multiplexed with FD6 (FLCTL I/O),
MODE2 (mode control input), and port L2 (GPIO I/O) pin,
the IRQ/
IRL5
pin is multiplexed with FD5 (FLCTL I/O),
MODE1 (mode control input), and port L3 (GPIO I/O) pin,
and the IRQ/
IRL4
pin is multiplexed with FD4 (FLCTL I/O),
MODE3 (mode control input), and port L4 (GPIO I/O) pin.
IRQOUT
Interrupt
request
output pin
Output Informs an external device of the generation of an interrupt
request.
The
IRQOUT
pin is multiplexed with
MRESETOUT
(reset,
watchdog timer (WDT) output pin).
IRQOUT
outputs the low level even if the interrupt request is
not accepted by the CPU because of the priority of a
generated interrupt request being lower than SR.IMASK.
However,
IRQOUT
is not asserted in the following cases:
(1) IRL interrupt
•
The IRL interrupt is masked by INTMASK1, or
•
The
IRQ
interrupt is masked by INTMASK2.
(2)
IRQ
interrupt
•
The interrupt is masked by INTMASK1, or
•
The priority of the IRQ interrupt is set to H'0 by INTPRI
(3) On-chip module interrupt
•
The on-chip module interrupt is masked by INT2MSKR,
or
•
The priority is set to H'00 or H'01 by INT2PRI0 to
INT2PRI9.
Содержание SH7781
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