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MC9S12KG128 Datasheet, PDF (288/600 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Chapter 9 Freescaleâs Scalable Controller Area Network (MSCANV2)
9.3.2.10 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.
7
6
5
4
3
2
1
0
R
0
0
0
0
0
ABTAK2 ABTAK1 ABTAK0
W
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 9-11. MSCAN Transmitter Message Abort Acknowledge Register (CANTAAK)
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 ï¬ags
Table 9-16. CANTAAK Register Field Descriptions
Field
Description
2:0
ABTAK[2:0]
Abort Acknowledge â This ï¬ag acknowledges that a message was aborted due to a pending abort request
from the CPU. After a particular message buffer is ï¬agged empty, this ï¬ag can be used by the application
software to identify whether the message was aborted successfully or was sent anyway. The ABTAKx ï¬ag is
cleared whenever the corresponding TXE ï¬ag is cleared.
0 The message was not aborted.
1 The message was aborted.
MC9S12KG128 Data Sheet, Rev. 1.15
288
Freescale Semiconductor
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