Interrupt Controller Module
MCF52235 ColdFire® Integrated Microcontroller Reference Manual, Rev. 6
15-9
Freescale Semiconductor
15.3.4
Interrupt Request Level Register (IRLRn)
This 7-bit register is updated each machine cycle and represents the current interrupt requests for each
interrupt level, where bit 7 corresponds to level 7, bit 6 to level 6, etc.
15.3.5
Interrupt Acknowledge Level and Priority Register (IACKLPRn)
Each time an IACK is performed, the interrupt controller responds with the vector number of the highest
priority source within the level being acknowledged. In addition to providing the vector number directly
for the byte-sized IACK read, this 8-bit register is also loaded with information about the interrupt level
IPSBAR
Offset:
0x00_0C14 (INTFRCL0)
0x00_0D14 (INTFRCL1)
Access: User read/write
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
R
INTFRCL[31:1]
0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 15-6. Interrupt Force Register Low (INTFRCLn)
Table 15-9. INTFRCLn Field Descriptions
Field
Description
31–1
INTFRCL
Interrupt force. Allows software generation of interrupts for each possible source for functional or debug purposes.
0 No interrupt forced on corresponding interrupt source
1 Force an interrupt on the corresponding source
0
Reserved, must be cleared.
IPSBAR
Offset:
0x00_0C18 (IRLR0)
0x00_0D18 (IRLR1)
Access: Read-only
7
6
5
4
3
2
1
0
R
IRQ[7:1]
0
W
Reset:
0
0
0
0
0
0
0
0
Figure 15-7. Interrupt Request Level Register (IRLRn)
Table 15-10. IRLRn Field Descriptions
Field
Description
7–1
IRQ
Interrupt requests. Represents the prioritized active interrupts for each level.
0 There are no active interrupts at this level
1 There is an active interrupt at this level
0
Reserved
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:MCF52234CVM60,
MCF52235CVM60
