User`s manual

E–4 External Interrupts RabbitCore RCM2100 Series
E.3 OR’ed Interrupt Request
Remove R22 and R26, and tie the inputs for exter-
nal interrupt #1 and #0 together by adding a 1 kΩ
resistor at R58 and R59. Figure E–4 shows the loca-
tions of the resistors.
This configuration is shown in Figure E–6.
E.4 Generating Interrupt With
the RealTek Chip
Although Dynamic C Premier does not support this
option, an external interrupt may be generated using
the RealTek RTL8019AS chip, U3. Remove R22
and R23, and install 1 kΩ resistors at R25 and R58.
Figure E–4 shows the locations of the resistors.
Figure E–6: RabbitCore RCM2100 Configuration
for OR’ed Interrupt Request
Edge
Detectors
Interrupt Request #1
INT1A
Interrupt Request #0
INT0A
1 kW
OR'ed Interrupt
Request
1 kW
INT0B
INT1B
OR'ed Interrupt
Request
R59
R58