L-Bus to U-Bus Interface (L2U)
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
11-15
11.8.5
Region Attribute Registers (L2U_RAx)
Each L2U region attribute register defines the protection attributes associated with a specific region
protected by the data memory protection unit. There are four registers (x = 0...3), one for each supported
region.
Table 11-8. L2U_RBAx Bit Descriptions
Bits
Name
Description
0:19
RBA
Region base address. The RBA field provides the base address of the region. The region base
address should start on the block boundary for the corresponding block size attribute specified
in the region attribute register (L2U_RAx).
20:31
—
Reserved
MSB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field
—
RS
Reset
0000_0000_0000_0000
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
LSB
31
Field
RS
PP
—
G
—
Reset
0000_0000_0000_0000
Addr
SPR 824–827
Figure 11-6. L2U Region X Attribute Register (L2U_RAx)
Table 11-9. L2U_RAx Bit Descriptions
Bits
Name
Description
0:7
—
Reserved
8:19
RS
Region size
0000_0000_0000 = 4 Kbytes
0000_0000_0001 = 8 Kbytes
0000_0000_0011 = 16 Kbytes
0000_0000_0111 = 32 Kbytes
0000_0000_1111 = 64 Kbytes
0000_0001_1111 = 128 Kbytes
0000_0011_1111 = 256 Kbytes
0000_0111_1111 = 512 Kbytes
0000_1111_1111 = 1 Mbyte
0001_1111_1111 = 2 Mbytes
0011_1111_1111 = 4 Mbytes
0111_1111_1111 = 8 Mbytes
1111_1111_1111 = 16 Mbytes
Summary of Contents for MPC561
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Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
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Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...