MC68HC08AZ32A Datasheet, PDF (141/312 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Programmer’s Model of Control Registers
RWRNIE — Receiver Warning Interrupt Enable
1 = A receiver warning status event will result in an error interrupt.
0 = No interrupt is generated from this event.
TWRNIE — Transmitter Warning Interrupt Enable
1 = A transmitter warning status event will result in an error interrupt.
0 = No interrupt is generated from this event.
RERRIE — Receiver Error Passive Interrupt Enable
1 = A receiver error passive status event will result in an error interrupt.
0 = No interrupt is generated from this event.
TERRIE — Transmitter Error Passive Interrupt Enable
1 = A transmitter error passive status event will result in an error interrupt.
0 = No interrupt is generated from this event.
BOFFIE — Bus-Off Interrupt Enable
1 = A bus-off event will result in an error interrupt.
0 = No interrupt is generated from this event.
OVRIE — Overrun Interrupt Enable
1 = An overrun event will result in an error interrupt.
0 = No interrupt is generated from this event.
RXFIE — Receiver Full Interrupt Enable
1 = A receive buffer full (successful message reception) event will result in a receive interrupt.
0 = No interrupt will be generated from this event.
NOTE
The CRIER register is held in the reset state when the SFTRES bit in
CMCR0 is set.
11.13.7 MSCAN08 Transmitter Flag Register
The abort acknowledge flags are read only. The transmitter buffer empty flags are read and clear only. A
flag can be cleared by writing a 1 to the corresponding bit position. Writing a 0 has no effect on the flag
setting. The transmitter buffer empty flags each have an associated interrupt enable bit in the CTCR
register. A hard or soft reset will resets the register.
Address: $0506
5
Bit 7
6
5
4
3
Read: 0
ABTAK2 ABTAK1 ABTAK0
0
Write:
Reset: 0
0
0
0
0
= Unimplemented
2
TXE2
1
1
TXE1
1
Bit 0
TXE0
1
Figure 11-22. Transmitter Flag Register (CTFLG)
ABTAK2–ABTAK0 — Abort Acknowledge
This flag acknowledges that a message has been aborted due to a pending abort request from the
CPU. After a particular message buffer has been flagged empty, this flag can be used by the
application software to identify whether the message has been aborted successfully or has been sent.
The ABTAKx flag is cleared implicitly whenever the corresponding TXE flag is cleared.
1 = The message has been aborted.
0 = The message has not been aborted, thus has been sent out.
MC68HC08AZ32A Data Sheet, Rev. 2
Freescale Semiconductor
141