SH7136 datasheet(134/1160 Pages) RENESAS

134 / 1160 page

Section 6 Interrupt Controller (INTC)

Rev. 2.00 Sep. 10, 2008 Page 108 of 1130

REJ09B0402-0200

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 M (IPRA,

IPRD to IPRF, and IPRH to IPRM). 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

Name

Vector

No.

Vector Table

Starting Address IPR

Default

Priority

User break

H'00000030



High

External pin

NMI

H'0000002C



IRQ0

H'00000100

IPRA15 to IPRA12

IRQ1

H'00000104

IPRA11 to IPRA8

IRQ2

H'00000108

IPRA7 to IPRA4

IRQ3

H'0000010C

IPRA3 to IPRA0

TGIA_0

H'00000160

IPRD15 to IPRD12

TGIB_0

H'00000164

TGIC_0

H'00000168

TGID_0

H'0000016C

TCIV_0

H'00000170

IPRD11 to IPRD8

TGIE_0

H'00000174

MTU2_0

TGIF_0

H'00000178

Low

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