sc9s12hy64j0vllr Freescale Semiconductor, Inc, sc9s12hy64j0vllr Datasheet - Page 325

• Manufacturer Part Number: sc9s12hy64j0vllr
• Description: S12 Microcontrollers Mcu 16-bit Hcs12 Cisc 32kb Flash 5v Tray
• Manufacturer: Freescale Semiconductor, Inc

9.3.2.10
The CANTAAK register indicates the successful abort of a queued message, if requested by the
appropriate bits in the CANTARQ register.
1. Read: Anytime
9.3.2.11
The CANTBSEL register allows the selection of the actual transmit message buffer, which then will be
accessible in the CANTXFG register space.
1. Read: Find the lowest ordered bit set to 1, all other bits will be read as 0
Freescale Semiconductor
Module Base + 0x0009
Module Base + 0x000A
ABTAK[2:0]
Write: Unimplemented
Write: Anytime when not in initialization mode
Field
2-0
Reset:
Reset:
W
W
R
R
Figure 9-13. MSCAN Transmitter Message Abort Acknowledge Register (CANTAAK)
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.
MSCAN Transmitter Message Abort Acknowledge Register (CANTAAK)
MSCAN Transmit Buffer Selection Register (CANTBSEL)
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 9-14. MSCAN Transmit Buffer Selection Register (CANTBSEL)
= Unimplemented
= Unimplemented
Table 9-16. CANTAAK Register Field Descriptions
6
0
0
6
0
0
MC9S12HY/HA-Family Reference Manual Rev. 1.04
0
0
0
0
5
5
NOTE
4
0
0
4
0
0
Description
Freescale’s Scalable Controller Area Network (S12MSCANV3)
0
0
0
0
3
3
ABTAK2
TX2
2
0
2
0
Access: User read/write
Access: User read/write
ABTAK1
TX1
0
0
1
1
ABTAK0
TX0
0
0
0
0
325
(1)
(1)