MC68HC908AT32 Datasheet, PDF (275/378 Pages) Freescale Semiconductor, Inc – Microcontrollers

Programmer’s Model of Control Registers
OVRIF — Overrun Interrupt Flag
This bit will be set when a data overrun condition occurred. If not masked, an error interrupt is pending
while this flag is set.
1 = A data overrun has been detected.
0 = No data overrun has occurred.
RXF — Receive Buffer Full Flag
The RXF flag is set by the MSCAN08 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 handshaked to release the
buffer. A set RXF flag prohibits the exchange of the background receive buffer into the foreground
buffer. In that case the MSCAN08 will signal an overload condition. If not masked, a receive interrupt
is pending while this flag is set.
1 = The receive buffer is full. A new message is available.
0 = The receive buffer is released (not full).
23.13.6 MSCAN08 Receiver Interrupt Enable Register
Address: $0505
Bit 7
6
5
4
3
2
1
Read:
WUPIE
Write:
RWRNIE TWRNIE
RERRIE
TERRIE
BOFFIE
OVRIE
Reset: 0
0
0
0
0
0
0
Figure 23-19. Receiver Interrupt Enable Register (CRIER)
Bit 0
RXFIE
0
WUPIE — Wakeup Interrupt Enable Bit
1 = A wakeup event will result in a wakeup interrupt.
0 = No interrupt will be generated from this event.
RWRNIE — Receiver Warning Interrupt Enable Bit
1 = A receiver warning status event will result in an error interrupt.
0 = No interrupt will be generated from this event.
TWRNIE — Transmitter Warning Interrupt Enable Bit
1 = A transmitter warning status event will result in an error interrupt.
0 = No interrupt will be generated from this event.
RERRIE — Receiver Error Passive Interrupt Enable Bit
1 = A receiver error passive status event will result in an error interrupt.
0 = No interrupt will be generated from this event.
TERRIE — Transmitter Error Passive Interrupt Enable Bit
1 = A transmitter error passive status event will result in an error interrupt.
0 = No interrupt will be generated from this event.
BOFFIE — Bus-Off Interrupt Enable Bit
1 = A bus-off event will result in an error interrupt.
0 = No interrupt will be generated from this event.
OVRIE — Overrun Interrupt Enable Bit
1 = An overrun event will result in an error interrupt.
0 = No interrupt will be generated from this event.
MC68HC908AT32 Data Sheet, Rev. 3.1
Freescale Semiconductor
275