
Freescale’s Scalable Controller Area Network (S12MSCANV3)
S12P-Family Reference Manual, Rev. 1.07
Freescale Semiconductor
PRELIMINARY
231
8.3.2.10
MSCAN Transmitter Message Abort Acknowledge Register (CANTAAK)
The CANTAAK register indicates the successful abort of a queued message, if requested by the
appropriate bits in the CANTARQ register.
NOTE
The CANTAAK register is held in the reset state when the initialization
mode is active (INITRQ = 1 and INITAK = 1).
Read: Anytime
Write: Unimplemented for ABTAKx ags
Module Base + 0x0009
76543210
R
00000
ABTAK2
ABTAK1
ABTAK0
W
Reset:
00000000
= Unimplemented
Figure 8-13. MSCAN Transmitter Message Abort Acknowledge Register (CANTAAK)
Table 8-14. CANTAAK Register Field Descriptions
Field
Description
2:0
ABTAK[2:0]
Abort Acknowledge — This ag acknowledges that a message was aborted due to a pending abort request
from the CPU. After a particular message buffer is agged empty, this ag can be used by the application
software to identify whether the message was aborted successfully or was sent anyway. The ABTAKx ag is
cleared whenever the corresponding TXE ag is cleared.
0 The message was not aborted.
1 The message was aborted.