Chapter 14 Freescale’s Scalable Controller Area Network (S12MSCANV3)
MC9S12XDP512 Data Sheet, Rev. 2.11
634 Freescale Semiconductor
14.3.2.10 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 flags
Module Base + 0x0009
76543210
R00000ABTAK2 ABTAK1 ABTAK0
W
Reset: 00000000
= Unimplemented
Figure 14-12. MSCAN Transmitter Message Abort Acknowledge Register (CANTAAK)
Table 14-15. CANTAAK Register Field Descriptions
Field Description
2:0
ABTAK[2:0]
Abort Acknowledge — This flag acknowledges that a message was aborted due to a pending abort request
from the CPU. After a particular message buffer is flagged empty, this flag can be used by the application
software to identify whether the message was aborted successfully or was sent anyway. The ABTAKx flag is
cleared whenever the corresponding TXE flag is cleared.
0 The message was not aborted.
1 The message was aborted.