XC912BC32CFU8 Motorola Semiconductor Products, XC912BC32CFU8 Datasheet - Page 291

• Manufacturer Part Number: XC912BC32CFU8
• Description: M68HC12B Family Data Sheet
• Manufacturer: Motorola Semiconductor Products

16.12.6 msCAN12 Receiver Interrupt Enable Register
M68HC12B Family — Rev. 8.0
MOTOROLA
NOTE:
OVRIF — Overrun Interrupt Flag
RXF — Receive Buffer Full Flag
To ensure data integrity, no registers of the receive buffer shall be read while the
RXF flag is cleared.The CRFLG register is held in the reset state when the
SFTRES bit in CMCR0 is set.
WUPIE — Wakeup Interrupt Enable Bit
RWRNIE — Receiver Warning Interrupt Enable Bit
TWRNIE — Transmitter Warning Interrupt Enable Bit
RERRIE — Receiver Error Passive Interrupt Enable Bit
TERRIE — Transmitter Error Passive Interrupt Enable Bit
This flag is set when a data overrun condition occurs. If not masked, an Error
interrupt is pending while this flag is set.
The RXF flag is set by the msCAN12 when a new message is available in the
foreground receive buffer. This flag indicates whether the buffer is loaded with
a correctly received message. After the CPU has read that message from the
receive buffer, the RXF flag must be handshaken (cleared) to release the buffer.
A set RXF flag prohibits the exchange of the background receive buffer into the
foreground buffer. If not masked, a receive interrupt is pending while this flag is
set.
Address: $0105
Reset:
Figure 16-21. msCAN12 Receiver Interrupt Enable Register (CRIER)
Read:
Write:
0 = No data overrun has occurred.
1 = A data overrun has been detected.
0 = Receive buffer is released (not full).
1 = Receive buffer is full. A new message is available.
0 = No interrupt is generated from this event.
1 = A wakeup event results in a wakeup interrupt.
0 = No interrupt is generated from this event.
1 = A receiver warning status event results in an error interrupt.
0 = No interrupt is generated from this event.
1 = A transmitter warning status event results in an error interrupt.
0 = No interrupt is generated from this event.
1 = A receiver error passive status event results in an error interrupt.
0 = No interrupt is generated from this event.
1 = A transmitter error passive status event results in an error interrupt.
WUPIE
Bit 7
0
RWRNIE
msCAN12 Controller
6
0
TWRNIE
5
0
RERRIE
4
0
Programmer’s Model of Control Registers
TERRIE
3
0
BOFFIE
2
0
msCAN12 Controller
OVRIE
1
0
Data Sheet
RXFIE
Bit 0
0
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