Aic interrupt set command register, Aic end of interrupt command register – Rainbow Electronics AT75C220 User Manual
Page 61

AT75C220
61
AIC Interrupt Set Command Register
Register Name: AIC_ISCR
Access Type:Write only
Reset Value: Undefined
•
NFIQ: NFIQ Status
0 = NFIQ line inactive.
1 = NFIQ line active.
•
NIRQ: NIRQ Status
0 = NIRQ line inactive.
1 = NIRQ line active.
AIC End of Interrupt Command Register
Register Name: AIC_EOICR
Access Type:Write-only
The End of Interrupt Command Register is used by the interrupt routine to indicate that the interrupt treatment is complete.
Any value can be written because it is only necessary to make a write to this register location to signal the end of interrupt
treatment.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
–
–
–
–
–
–
NIRQ
NFIQ
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
–
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