Samsung S3C8275X - Manual (Page 80)

CONTROL REGISTERS S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
4-10
EXTICONL
— External Interrupt Control Register (Low Byte) F9H Set 1, Bank 0
Bit Identifier .7 .6 .5 .4 .3 .2 .1 .0
Reset Value 0 0 0 0 0 0 0 0
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Addressing Mode Register addressing mode only
.7–.6 P1.3 External Interrupt (INT3) Configuration Bits
0 0 Disable interrupt
0 1 Enable interrupt by falling edge
1 0 Enable interrupt by rising edge
1 1 Enable interrupt by both falling and rising edge
.5–.4 P0.2 External Interrupt (INT2) Configuration Bits
0 0 Disable interrupt
0 1 Enable interrupt by falling edge
1 0 Enable interrupt by rising edge
1 1 Enable interrupt by both falling and rising edge
.3–.2 P0.1 External Interrupt (INT1) Configuration Bits
0 0 Disable interrupt
0 1 Enable interrupt by falling edge
1 0 Enable interrupt by rising edge
1 1 Enable interrupt by both falling and rising edge
.1–.0 P0.0 External Interrupt (INT0) Configuration Bits
0 0 Disable interrupt
0 1 Enable interrupt by falling edge
1 0 Enable interrupt by rising edge
1 1 Enable interrupt by both falling and rising edge