SAMA5D42_14 Datasheet, PDF (162/1776 Pages) ATMEL Corporation – Atmel | SMART ARM-based Embedded MPU

16.13.13Security Areas Split Slave Registers
Name:
MATRIX_SASSRx [x=0..12]
Address: 0xF001C240 (0), 0xFC054240 (1)
Access:
Read/Write
31
30
29
28
27
26
25
24
SASPLIT7
SASPLIT6
23
22
21
20
19
18
17
16
SASPLIT5
SASPLIT4
15
14
13
12
11
10
9
8
SASPLIT3
SASPLIT2
7
6
5
4
3
2
1
0
SASPLIT1
SASPLIT0
This register can only be written if the WPEN bit is cleared in the Write Protection Mode Register.
• SASPLITx: Security Areas Split for HSELx Security Region
This field defines the boundary address offset where the HSELx AHB slave security region splits into two Security Areas
whose access is controlled according to the corresponding MATRIX_SSR. So it also defines the Security Low Area size
inside the HSELx region.
If this Low Area size is set at or above the HSELx Region Size, then there is no more Security High Area and the
MATRIX_SSR settings for the Low area apply to the whole HSELx Security Region.
SASPLITx
Split Offset
Security Low Area Size
0000
0x00001000
4 Kbytes
0001
0x00002000
8 Kbytes
0010
0x00004000
16 Kbytes
0011
0x00008000
32 Kbytes
0100
0x00010000
64 Kbytes
0101
0x00020000
128 Kbytes
0110
0x00040000
256 Kbytes
0111
0x00080000
512 Kbytes
1000
0x00100000
1 Mbyte
1001
0x00200000
2 Mbytes
1010
0x00400000
4 Mbytes
1011
0x00800000
8 Mbytes
1100
0x01000000
16 Mbytes
1101
0x02000000
32 Mbytes
1110
0x04000000
64 Mbytes
1111
0x08000000
128 Mbytes
162
SAMA5D4 Series [DATASHEET]
Atmel-11238A-ATARM-SAMA5D4-Datasheet_30-Sep-14