HD6417618 datasheet(125/646 Pages) RENESAS

Nome de Peças	HD6417618

Descrição Electrónicos	32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series

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Fabricante Electrônico	RENESAS [Renesas Technology Corp]

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Section 6 Interrupt Controller (INTC)

Rev. 6.00 Jun. 12, 2007 Page 93 of 610

REJ09B0131-0600

6.3.4

Interrupt Priority Registers A to E (IPRA to IPRE)

Interrupt priority registers are five 16-bit readable/writable registers that set priority levels from 0

to 15 for interrupts except NMI. For the correspondence between interrupt request sources and

IPR, refer to table 6.2, Interrupt Exception Handling Vectors and Priorities. Each of the

corresponding interrupt priority ranks are established by setting a value from H'0 to H'F in each of

the four-bit groups 15 to 12, 11 to 8, 7 to 4 and 3 to 0. Reserved bits that are not assigned should

be set H'0 (B'0000).

Bit

Bit Name

Initial

Value

R/W

Description

IPR15

IPR14

IPR13

IPR12

R/W

Set priority levels for the corresponding interrupt

source.

0000: Priority level 0 (lowest)

0001: Priority level 1

0010: Priority level 2

0011: Priority level 3

0100: Priority level 4

0101: Priority level 5

0110: Priority level 6

0111: Priority level 7

1000: Priority level 8

1001: Priority level 9

1010: Priority level 10

1011: Priority level 11

1100: Priority level 12

1101: Priority level 13

1110: Priority level 14

1111: Priority level 15 (highest)

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