Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Datenbogen
Produktcode
AT91SAM9M10-G45-EK
142
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
19.7.4
Bus Matrix Priority Registers B For Slaves
Name:
MATRIX_PRBS0...MATRIX_PRBS7
Addresses:
0xFFFFEA84 [0], 0xFFFFEA8C [1], 0xFFFFEA94 [2], 0xFFFFEA9C [3], 0xFFFFEAA4 [4], 0xFFFFEAAC [5],
0xFFFFEAB4 [6], 0xFFFFEABC [7]
Access:
Read-write
.
• MxPR: Master x Priority
Fixed priority of Master x for accessing the selected slave. The higher the number, the higher the priority.
All the masters programmed with the same MxPR value for the slave make up a priority pool.
Round-Robin arbitration is used inside the lowest (MxPR = 0) and highest (MxPR = 3) priority pools.
Fixed priority is used inside intermediate priority pools (MxPR = 1) and (MxPR = 2).
See
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
M11PR
M10PR
7
6
5
4
3
2
1
0
–
–
M9PR
–
–
M8PR