at75c220 ATMEL Corporation, at75c220 Datasheet - Page 61
at75c220
Manufacturer Part Number
at75c220
Description
Smart Internet Appliance Processor Siap
Manufacturer
ATMEL Corporation
Datasheet
1.AT75C220.pdf
(144 pages)
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AIC Interrupt Set Command Register
Register Name: AIC_ISCR
Access Type:Write only
Reset Value: Undefined
•
•
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.
NFIQ: NFIQ Status
NIRQ: NIRQ Status
0 = NFIQ line inactive.
1 = NFIQ line active.
0 = NIRQ line inactive.
1 = NIRQ line active.
31
23
15
31
23
15
–
–
–
7
–
–
–
–
7
–
30
22
14
30
22
14
–
–
–
6
–
–
–
–
6
–
29
21
13
29
21
13
–
–
–
5
–
–
–
–
5
–
28
20
12
28
20
12
–
–
–
4
–
–
–
–
4
–
27
19
11
27
19
11
–
–
–
3
–
–
–
–
3
–
26
18
10
26
18
10
–
–
–
2
–
–
–
–
2
–
NIRQ
25
17
25
17
–
–
9
–
1
–
–
9
–
1
–
NFIQ
24
16
24
16
–
–
8
–
0
–
–
8
–
0
–
61
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