READI Module
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
24-67
The error message has the following format:
Figure 24-60. Error Message (Read/Write Access Error) Format
24.10.8.2 Invalid Message
An error message is sent out when an invalid message is received by READI. The error code within the
error message indicates that an invalid TCODE was detected in the auxiliary input messages by the signal
input formatter. Refer to
The error message has the following format:
Figure 24-61. Error Message (Invalid Message) Format
NOTE
If the TCODE is valid, then READI will expect that the correct number of packets have been received and
no further checking will be performed. If the number of packets received by READI is not correct, READI
response is not deterministic.
24.10.8.3 Invalid Access Opcode
An error message is sent out when an invalid access opcode is received by READI. The error code within
the error message indicates that an invalid access opcode was detected in the auxiliary input messages by
the signal input formatter. Refer to
.
The error message has the following format:
Figure 24-62. Error Message (Invalid Access Opcode) Format
24.10.9 Faster Read/Write Accesses with Default Attributes
Read/write access throughput may be increased by taking advantage of the default settings of the RWA
register, and truncating the least significant zero bits of the download request message. For example, to
read a word from the default memory map, with default attributes, a download request message that selects
TCODE (8)
Error Code (0b00011)
Length = 11 bits
[5 bits]
[6 bits]
TCODE (8)
Error Code (0b00100)
Length = 11 bits
[5 bits]
[6 bits]
TCODE (8)
Error Code (0b00101)
Length = 11 bits
[5 bits]
[6 bits]
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...