at75c220 ATMEL Corporation, at75c220 Datasheet - Page 55

• Manufacturer Part Number: at75c220
• Description: Smart Internet Appliance Processor Siap
• Manufacturer: ATMEL Corporation

AIC User Interface
Base Address: 0xFF030000
Table 18. AIC Memory Map
Note:
AIC Source Mode Register
Register Name: AIC_SMR0...AIC_SMR31
Access Type:Read/write
Reset Value: 0
•
Offset
0x000
0x004
–
0x07C
0x080
0x084
–
0xFC0
0x100
0x104
0x108
0x10C
0x110
0x114
0x118
0x11C
0x120
0x124
0x128
0x12C
0x130
0x134
PRIOR: Priority Level
Programs the priority level for all sources except source 0 (FIQ).
The priority level can be between 0 (lowest) and 7 (highest).
The priority level is not used for the FIQ in the SMR0.
31
23
15
–
–
–
7
–
1. The reset value of this register depends on the level of the external IRQ lines. All other sources are cleared at reset.
Register Name
AIC_SMR0
AIC_SMR1
–
AIC_SMR31
AIC_SVR0
AIC_SVR1
–
AIC_SVR31
AIC_IVR
AIC_FVR
AIC_ISR
AIC_IPR
AIC_IMR
AIC_CISR
–
–
AIC_IECR
AIC_IDCR
AIC_ICCR
AIC_ISCR
AIC_EOICR
AIC_SPU
30
22
14
–
–
–
6
SRCTYPE
29
21
13
–
–
–
5
Register
Source Mode Register 0
Source Mode Register 1
–
Source Mode Register 31
Source Vector Register 0
Source Vector Register 1
–
Source Vector Register 31
IRQ Vector Register
FIQ Vector Register
Interrupt Status Register
Interrupt Pending Register
Interrupt Mask Register
Core Interrupt Status Register
Reserved
Reserved
Interrupt Enable Command Register
Interrupt Disable Command Register
Interrupt Clear Command Register
Interrupt Set Command Register
End-of-interrupt Command Register
Spurious Interrupt Vector Register
28
20
12
–
–
–
4
–
27
19
11
–
–
–
3
–
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
26
18
10
Read-only
Read-only
Read-only
Read-only
Read-only
Read-only
Write-only
Write-only
Write-only
Write-only
Write-only
–
–
–
2
Access
–
–
–
–
PRIOR
25
17
–
–
9
–
1
Reset State
See Note 1
0
0
–
0
0
0
–
0
0
0
0
0
0
–
–
–
–
–
–
–
0
24
16
–
–
8
–
0
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