M32CSLASH8A datasheet(222/372 Pages) RENESAS

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M32C/8A Group

17. Serial Interfaces

Rev.1.00

Jul 15, 2007

Page 205 of 352

REJ09B0385-0100

Figure 17.9

IFSR Register

b7 b6 b5 b4

External Interrupt Source Select Register

Symbol

IFSR

Address

031Fh

Bit Symbol

Bit Name

After Reset

00h

Function

IFSR0

0: One edge

1: Both edges

INT0 interrupt polarity

select bit(1)

IFSR1

INT1 interrupt polarity

select bit(1)

0: One edge

1: Both edges

IFSR2

INT2 interrupt polarity

select bit(1)

0: One edge

1: Both edges

IFSR3

INT3 interrupt polarity

select bit(1)

0: One edge

1: Both edges

IFSR4

INT4 interrupt polarity

select bit(1)

0: One edge

1: Both edges

IFSR5

INT5 interrupt polarity

select bit(1)

0: One edge

1: Both edges

IFSR6

UART0, UART3

interrupt source select bit

0: UART3 bus conflict, start condition detection,

stop condition detection

1: UART0 bus conflict, start condition detection,

stop condition detection

IFSR7

UART1, UART4

interrupt source select bit

0: UART4 bus conflict, start condition detection,

stop condition detection

1: UART1 bus conflict, start condition detection,

stop condition detection

NOTE:

1. Set the IFSRi bit (i = 0 to 5) to 0 to select a level-sensitive triggering. When selecting both edges, set the POL bit in the

corresponding INTilC register to 0 (falling edge).

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