Fujitsu MB90420/5 (A) Series Hardware Manual page 276

MB90420/5 (A) SERIES F
[bits 5, 4] ICE3, ICE2, ICE1, ICE0
These bits enable input capture interrupts. If the interrupt flags (ICP3, ICP2, ICP1 and ICP0) are set
when these bits are 1, an input capture interrupt occurs.
ICEn: Number of n corresponds to the channel number of input capture.
[bits 3 to 0] EG31/30, EG21/20, EG11/10, EG01/00
These bits specify the polarity of the effective edge of the external input and also enable the input capture
operation.
EG31
0
0
1
1
EGn1/EGn0: Number of n corresponds to the channel number of input capture.
2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
0 Interrupt disabled
1 Interrupt enabled
EG30
0 Edge not detected (stop state)
1 Rising edge detected
0 Falling edge detected
1 Both edges detected
Polarity of Edge Detection
↑
↓
↑ and ↓
11-8
[Initial value]
[Initial value]