Burst Buffer Controller 2 Module
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
4-13
Figure 4-4. DECRAM Interfaces Block Diagram
4.4.1
General-Purpose Memory Operation
In the case of decompression off mode, the DECRAM can serve as a two-clock access general-purpose
RAM for U-bus instruction fetches or four-clock access for read/write data operations. The base address
of the DECRAM is 0x2F 8000. See
. The proper access rights to the DECRAM array may be
defined by programming the R, D, and S bits of the BBCMCR register:
•
Read/write or read only
•
Instruction/data or data only
•
Supervisor/user or supervisor only
Vocabulary Table (VT1)
(1 Kbyte)
DECRAM
Array
Vocabulary Table (VT2)
(1 Kbyte)
Array
U-bus Address
U-bus Data
Slave BIU
VT1 Address
VT2 Address
VT1 Data
VT2 Data
ICDU Control Logic
ICDU
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...