Burst Buffer Controller 2 Module
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
4-19
4.6.2
BBC Register Descriptions
4.6.2.1
BBC Module Configuration Register (BBCMCR)
,
MSB
0
1
2
3
4
5
6
7
8
9
10
11 12 13
14
15
Field
R
D
S
TEST
—
HRESET
0000_0000_0000_0000
16
17
18
19
20
21
22
23
24
25
26
27 28 29
30
LSB
31
Field
—
BE
ETRE EIR
EN_
COMP
1
1
MPC562/MPC564 only.
EXC_COMP
1
DECOMP_SC_
EN
1
OERC[0:1] BTEE
—
DCAE TST
HRESET
000
ID19
2
2
The reset value is a reset configuration word value extracted from the internal bus line. Refer to
0
ID21
2
ID22
2
ID21
2
ID(24:25)
2
00_0000
Addr
SPR 560
Figure 4-7. BBC Module Configuration Register (BBCMCR)
Table 4-4. BBCMCR Field Descriptions
Bits
Name
Description
0
R
Read Only. Any attempt to write to the DECRAM array while R is set is terminated with
an error. This causes a machine check exception for RCPU.
0 DECRAM array is Readable and Writable.
1 DECRAM array is Read only.
1
D
Data Only. The DECRAM array may be used for Instructions and Data or for Data
storage only. Any attempt to load instructions from the DECRAM array, while D is set, is
terminated with an error This causes a machine check exception for the RCPU.
0 DECRAM array holds Data and/or Instruction.
1 DECRAM array holds Data only.
2
S
Supervisor Only.
When the bit is set (S = 1), only a Supervisor program may access the DECRAM. If a
Supervisor program is accessing the array, normal read/write operation will occur. If a
User program is attempting to access the array, the access will be terminated with an
error This causes a machine check exception for the RCPU.
If S = 0, the RAM array is placed in Unrestricted Space and access by both Supervisor
and User programs is allowed.
3:7
TEST
These bits can be set in Factory test mode only. The User should treat these bits as
reserved and always write as zeros.
8:17
—
Reserved
18
BE
1
Burst Enable
0 Burst access is disabled.
1 Burst access is enabled.
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
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...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
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...