s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 276

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

I/O PORTS
EXTERNAL INTERRUPT CONTROL REGISTER (EXTINTn)
The 24 external interrupts can be requested by various signaling methods. The EXTINTn configures the signaling
method between the level trigger and edge trigger for the external interrupt request, and also configures the signal
polarity.
To recognize the level interrupt, the valid logic level on EXTINTn pin must be retained at least for 40ns because of the
noise filter (EINT[15:0]).
9-22
Register
EXTINT0
EXTINT0
EXTINT1
EXTINT2
EINT7
EINT6
EINT5
EINT4
EINT3
EINT2
EINT1
EINT0
0x5600008C
0x56000088
0x56000090
Address
[30:28]
[26:24]
[22:20]
[18:16]
[14:12]
[10:8]
[6:4]
[2:0]
Bit
Set the signaling method of the EINT7.
000 = Low level
10x = Rising edge triggered
Set the signaling method of the EINT6.
000 = Low level
10x = Rising edge triggered
Set the signaling method of the EINT5.
000 = Low level
10x = Rising edge triggered
Set the signaling method of the EINT4.
000 = Low level
10x = Rising edge triggered
Set the signaling method of the EINT3.
000 = Low level
10x = Rising edge triggered
Set the signaling method of the EINT2.
000 = Low level
10x = Rising edge triggered
Set the signaling method of the EINT1.
000 = Low level
10x = Rising edge triggered
Set the signaling method of the EINT0.
000 = Low level
10x = Rising edge triggered
R/W
R/W
R/W
R/W
External interrupt control register 0
External interrupt control register 1
External interrupt control register 2
001 = High level
001 = High level
001 = High level
001 = High level
001 = High level
001 = High level
001 = High level
001 = High level
Description
Description
01x = Falling edge triggered
01x = Falling edge triggered
01x = Falling edge triggered
01x = Falling edge triggered
01x = Falling edge triggered
01x = Falling edge triggered
01x = Falling edge triggered
01x = Falling edge triggered
11x = Both edge triggered
11x = Both edge triggered
11x = Both edge triggered
11x = Both edge triggered
11x = Both edge triggered
11x = Both edge triggered
11x = Both edge triggered
11x = Both edge triggered
Reset Value
0x0
0x0
0x0
S3C2410A