Table of Contents
Advertisement
MDI/O: Data on
MSE =1
22.2.2.3 Messages
Public messages outlined in Table 22-19 are supported by READI.
Minimum
Message Name
Size (bits)
Device ID
Ownership Trace
Message
Program Trace —
Direct Branch
Message
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
MSE=1
MDI/O: Ignored
MSE =1
End
MSE=0
Message
MDI/O is
ignored
MSE=1
MSE=1
End
Packet
MDI/O: Valid
MSE=0
MSE represents MSEI/MSEO
MDI/O represents MDO/MDI
Figure 22-14. MSEI/MSEO Transfers
Table 22-19. Public Messages Supported
Maximum
Packet
Packet
Packet Type
Size (bits)
6
6
Fixed
32
32
Fixed
6
6
Fixed
32
32
Fixed
6
6
Fixed
1
8
Variable
Chapter 22. READI Module
READI Reset
Idle
MSE =0
Start
Message
MDI/O: Valid
MSE=0
Normal
Transfer
MDI/O: Valid
Packet Description
TCODE number = 1
Device ID information
TCODE number = 2
Task/Process ID tag
TCODE number = 3
number of sequential instructions executed
since last taken branch
Signal Interface
MSE =0
Direction
From
Device
From
Device
From
Device
22-27
Advertisement
Table of Contents
