Figure 12.3.2 External Interrupt 2 Control Register (Eic2) - Fujitsu F2MC-8L MB89620 Series Hardware Manual

12.3 Structure of External Interrupt Circuit
12.3.2 External Interrupt 2 Control Register (EIC2)
The external interrupt 2 control register (EIC2) is used to select the edge polarity and
to control interrupts for external interrupt pins (INT2, INT3), in the same way as
external interrupt 1 control register (EIC1).
n External Interrupt 2 Control Register (EIC2)
Address
0025
H
R/W : Readable and writable
—
X
238
CHAPTER 12 EXTERNAL INTERRUPT CIRCUIT (EDGE)
Bit 7 Bit 6 Bit 5 Bit 4
EIR3 — SEL3 EIE3
R/W R/W R/W
INT2 (IRQ2)
INT3 (IRQ3)
: Unused
: Indeterminate
: Initial value

Figure 12.3.2 External Interrupt 2 Control Register (EIC2)

Bit 3 Bit 2 Bit 1
EIR2 — SEL2
R/W R/W
EIE2 Interrupt request enable bit 2
0 Disables interrupt request output.
1 Enables interrupt request output.
SEL2 Edge polarity selection bit 2
0 Rising edge
1 Falling edge
External interrupt request flag bit 2
EIR2
Read
0
The specified edge has not been input. Clears this bit.
1
The specified edge has been input.
EIE3 Interrupt request enable bit 3
0 Disables interrupt request output.
1 Enables interrupt request output.
SEL3 Edge polarity selection bit 3
0 Rising edge
1 Falling edge
External interrupt request flag bit 3
EIR3
Read
0
The specified edge has not been input. Clears this bit.
1
The specified edge has been input.
Bit 0 Initial value
EIE2 0X000X00
B
R/W
Write
No effect. The bit does not change.
Write
No effect. The bit does not change.
MB89620 series