Section 5 Interrupt Controller
Rev. 3.00 Mar. 14, 2006 Page 92 of 804
REJ09B0104-0300
5.3.3 Interrupt
Priority Registers A to G, I, K to O, Q, and R (IPRA to IPRG, IPRI,
IPRK to IPRO, IPRQ, and IPRR)
IPR sets priory (levels 7 to 0) for interrupts other than NMI.
Setting a value in the range from B'000 to B'111 in the 3-bit groups of bits 14 to 12, 10 to 8, 6 to 4,
and 2 to 0 assigns a priority level to the corresponding interrupt. For the correspondence between
the interrupt sources and the IPR settings, see table 5.2.
Bit
Bit Name
Initial Value
R/W
15
—
0
R
14
IPR14
1
R/W
13
IPR13
1
R/W
12
IPR12
1
R/W
11
—
0
R
10
IPR10
1
R/W
9
IPR9
1
R/W
8
IPR8
1
R/W
Bit
Bit Name
Initial Value
R/W
7
—
0
R
6
IPR6
1
R/W
5
IPR5
1
R/W
4
IPR4
1
R/W
3
—
0
R
2
IPR2
1
R/W
1
IPR1
1
R/W
0
IPR0
1
R/W
Bit Bit
Name
Initial
Value R/W Description
15
0 R
Reserved
This is a read-only bit and cannot be modified.
14
13
12
IPR14
IPR13
IPR12
1
1
1
R/W
R/W
R/W
Sets the priority level of the corresponding interrupt
source.
000: Priority level 0 (lowest)
001: Priority level 1
010: Priority level 2
011: Priority level 3
100: Priority level 4
101: Priority level 5
110: Priority level 6
111: Priority level 7 (highest)
11
0 R
Reserved
This is a read-only bit and cannot be modified.
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