Chapter 5
Interrupt Controller
Control Registers V - 27
■ Group 21 Interrupt Control Register (G21ICR: 0x00008954) [8, 16-bit Access Register]
■ Group 22 Interrupt Control Register (G22ICR: 0x00008958) [8, 16-bit Access Register]
bp 1514131211109876543210
Flag - G21
LV2
G21
LV1
G21
LV0
---G21
IE0
---G21
IR0
---G21
ID0
At reset 0000000000000000
Access RR/WR/WR/WRRRR/WRRRR/WRRRR/W
bp Flag Description Set condition
15 - - -
14-12
G21LV2
G21LV1
G21LV0
Set an interrupt priority level Set a level 6 to 0
11-9 - - -
8G21IE0
External interrupt 4 interrupt enable flag 0: Disabled
1: Enabled
7-5 - - -
4G21IR0
External interrupt 4 interrupt request flag 0: No interrupt request
1: Interrupt request
3-1 - - -
0G21ID0
External interrupt 4 interrupt detection flag 0: No interrupt detected
1: Interrupt detected
bp 1514131211109876543210
Flag - G22
LV2
G22
LV1
G22
LV0
---G22
IE0
---G22
IR0
---G22
ID0
At reset 0000000000000000
Access RR/WR/WR/WRRRR/WRRRR/WRRRR/W
bp Flag Description Set condition
15 - - -
14-12
G22LV2
G22LV1
G22LV0
Set an internal priority level Set a level 6 to 0
11-9 - - -
8G22IE0
External interrupt 5 interrupt enable flag 0: Disabled
1: Enabled
7-5 - - -
4G22IR0
External interrupt 5 interrupt request flag 0: No interrupt request
1: Interrupt request
3-1 - - -
0G22ID0
External interrupt 5 interrupt detection 
flag
0: No interrupt detected
1: Interrupt detected