mc9s08dz32amlfr Freescale Semiconductor, Inc, mc9s08dz32amlfr Datasheet - Page 269

• Manufacturer Part Number: mc9s08dz32amlfr
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

12.3.9
The CANTAAK register indicates the successful abort of messages queued for transmission, if requested
by the appropriate bits in the CANTARQ register.
Read: Anytime
Write: Unimplemented for ABTAKx flags
12.3.10 MSCAN Transmit Buffer Selection Register (CANTBSEL)
The CANTBSEL selections of the actual transmit message buffer, which is accessible in the CANTXFG
register space.
Freescale Semiconductor
ABTAK[2:0]
Field
2:0
Reset:
Reset:
W
W
R
R
Figure 12-13. MSCAN Transmitter Message Abort Acknowledge Register (CANTAAK)
MSCAN Transmitter Message Abort Acknowledge Register
(CANTAAK)
Abort Acknowledge — This flag acknowledges that a message was aborted due to a pending transmission
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.
The CANTAAK register is held in the reset state when the initialization
mode is active (INITRQ = 1 and INITAK = 1).
0
0
0
0
7
7
Figure 12-14. MSCAN Transmit Buffer Selection Register (CANTBSEL)
= Unimplemented
= Unimplemented
Table 12-14. CANTAAK Register Field Descriptions
6
0
0
6
0
0
MC9S08DZ128 Series Data Sheet, Rev. 1
0
0
0
0
5
5
NOTE
4
0
0
4
0
0
Description
Chapter 12 Freescale’s Controller Area Network (S08MSCANV1)
0
0
0
0
3
3
ABTAK2
TX2
2
0
2
0
ABTAK1
TX1
0
0
1
1
ABTAK0
TX0
0
0
0
0
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