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Read/Write Access
Read/write access features are enabled by setting the appropriate fields in the RWA register.
For details on field configuration, refer to Section 22.1.1.7, "Read/Write Access Register
(RWA)."
The functional flow for read/write access to memory-mapped locations and MPC500
registers is depicted in Figure 22-58.
[6 bits]
TCODE (16)
Max Length = 6 bits
Min Length = 6 bits
Figure 22-54. Target Ready Message
[8 bits]
[6 bits]
TCODE (17)
Opcode
Max Length = 14 bits
Min Length = 14 bits
Figure 22-55. Read Register Message
[8 bits]
[6 bits]
[8-80 bits]
TCODE (18)
Opcode
Register Value
Max Length = 94 bits
Min Length = 22 bits
Figure 22-56. Write Register Message
[8-80 bits]
[6 bits]
TCODE (19)
Return Value
Max Length = 86 bits
Min Length = 14 bits
Figure 22-57. Read/Write Response Message
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MPC533 Reference Manual
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