SH7146 Datasheet, PDF (152/1022 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 6 Interrupt Controller (INTC)
6.5 Interrupt Exception Handling Vector Table
Table 6.3 lists interrupt sources, their vector numbers, vector table address offsets, and interrupt
priorities.
Individual interrupt sources are allocated to different vector numbers and vector table address
offsets. Vector table addresses are calculated from the vector numbers and vector table address
offsets. For interrupt exception handling, the start address of the exception handling routine is
fetched from the vector table address in the vector table. For the details on calculation of vector
table addresses, see table 5.4 in section 5, Exception Handling.
IRQ interrupts and on-chip peripheral module interrupt priorities can be set freely between 0
and 15 for each pin or module by setting interrupt priority registers A, D to F and H to L (IPRA,
IPRD to IPRF, and IPRH to IPRL). However, when interrupt sources whose priority levels are
allocated with the same IPR are requested, the interrupt of the smaller vector number has priority.
This priority cannot be changed. Priority levels of IRQ interrupts and on-chip peripheral module
interrupts are initialized to level 0 at a power-on reset. If the same priority level is allocated to two
or more interrupt sources and interrupts from those sources occur simultaneously, they are
processed by the default priority order shown in table 6.3.
Table 6.3 Interrupt Exception Handling Vectors and Priorities
Interrupt
Source
User break
External pin
MTU2_0
Name
NMI
IRQ0
IRQ1
IRQ2
IRQ3
TGIA_0
TGIB_0
TGIC_0
TGID_0
TCIV_0
TGIE_0
TGIF_0
Vector
No.
12
11
64
65
66
67
88
89
90
91
92
93
94
Vector Table
Starting Address IPR
Default
Priority
H'00000030

High
H'0000002C

H'00000100
IPRA15 to IPRA12
H'00000104
IPRA11 to IPRA8
H'00000108
IPRA7 to IPRA4
H'0000010C
IPRA3 to IPRA0
H'00000160
IPRD15 to IPRD12
H'00000164
H'00000168
H'0000016C
H'00000170
IPRD11 to IPRD8
H'00000174
H'00000178
Low
Rev. 3.00 May 17, 2007 Page 108 of 974
REJ09B0229-0300