K60P100M100SF2RM Datasheet, PDF (1350/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Memory Map/Register Definition
Table 48-110. Message Buffer Code for Tx buffers
CODE Description
Tx Code BEFORE tx
frame
0b1000: INACTIVE -
MB is not active
INACTIVE
0b1001: ABORT - MB
is aborted
ABORT
0b1100: DATA - MB is
a Tx Data Frame (MB
RTR must be 0)
DATA
MBRTR
-
-
0
0b1100: REMOTE -
REMOTE
1
MB is a Tx Remote
Request Frame (MB
RTR must be 1)
0b1110: TANSWER -
TANSWER
-
MB is a Tx Response
Frame from an
incoming Remote
Request Frame
Tx Code AFTER
successful
transmission
-
-
INACTIVE
EMPTY
RANSWER
Comment
MB does not
participate in the
arbitration process.
MB does not
participate in the
arbitration process.
Transmit data frame
unconditionally once.
After transmission, the
MB automatically
returns to the
INACTIVE state.
Transmit remote
request frame
unconditionally once.
After transmission, the
MB automatically
becomes an Rx Empty
MB with the same ID.
This is an intermediate
code that is
automatically written to
the MB by the CHI as a
result of match to a
remote request frame.
The remote response
frame will be
transmitted
unconditionally once
and then the code will
automatically return to
RANSWER (0b1010).
The CPU can also
write this code with the
same effect. The
remote response frame
can be either a data
frame or another
remote request frame
depending on the RTR
bit value. Refer to
section “Matching
Process" and section
“Arbitration Process"
for details.
SRR — Substitute Remote Request
1350
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.