| Memory Interface |
| Access |
|---|
| Broadway | Full |
|---|
| Starlet | None |
|---|
| Registers |
|---|
| Base | 0x0c004000 |
|---|
| Length | 0x80 |
|---|
| Access size | 16/32 bits |
|---|
| Byte order | Big Endian |
|---|
| IRQs |
|---|
| Broadway | 7 |
|---|
|
Protected memory is always 1 page long (page size is 1024 bytes), and you can specify only 4 protected regions. If the CPU tries to access the protected region in a way that is not allowed, an external interrupt will be raised. Because there are only 4 protected regions, there are a total of 4 possible interrupts which are called MEM_0, MEM_1, MEM_2 and MEM_3.
Registers
| MI_PROT_RGN0 (0x0C004000)
|
|
|
31
|
30
|
29
|
28
|
27
|
26
|
25
|
24
|
23
|
22
|
21
|
20
|
19
|
18
|
17
|
16
|
| Access
|
R/W
|
| Field
|
Low 16 bits of protected address
|
|
|
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| Access
|
R/W
|
| Field
|
High 16 bits of protected address
|
| MI_PROT_RGN1 (0x0C004004)
|
|
|
31
|
30
|
29
|
28
|
27
|
26
|
25
|
24
|
23
|
22
|
21
|
20
|
19
|
18
|
17
|
16
|
| Access
|
R/W
|
| Field
|
Low 16 bits of protected address
|
|
|
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| Access
|
R/W
|
| Field
|
High 16 bits of protected address
|
| MI_PROT_RGN2 (0x0C004008)
|
|
|
31
|
30
|
29
|
28
|
27
|
26
|
25
|
24
|
23
|
22
|
21
|
20
|
19
|
18
|
17
|
16
|
| Access
|
R/W
|
| Field
|
Low 16 bits of protected address
|
|
|
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| Access
|
R/W
|
| Field
|
High 16 bits of protected address
|
| MI_PROT_RGN3 (0x0C00400C)
|
|
|
31
|
30
|
29
|
28
|
27
|
26
|
25
|
24
|
23
|
22
|
21
|
20
|
19
|
18
|
17
|
16
|
| Access
|
R/W
|
| Field
|
Low 16 bits of protected address
|
|
|
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0
|
| Access
|
R/W
|
| Field
|
High 16 bits of protected address
|
| MI_PROT_TYPE (0x0C004010)
|
|
|
15
|
14
|
13
|
12
|
11
|
10
|
9
|
8
|
7
|
6
|
5
|
4
|
3
|
2
|
1
|
0
|
| Access
|
U
|
R/W
|
R/W
|
R/W
|
R/W
|
| Field
|
|
Ch3
|
Ch2
|
Ch1
|
Ch0
|
| Field
|
Description
|
| ChX
|
00: Access Denied, 01: Read Only, 10: Write Only, 11: Read/Write
|