mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 374

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

CAN Controller
Technical Data
372
RERRIF — Receiver Error Passive Interrupt Flag
TERRIF — Transmitter Error Passive Interrupt Flag
BOFFIF — Bus-Off Interrupt Flag
OVRIF — Overrun Interrupt Flag
RXF — Receive Buffer Full Flag
This bit will be set when the MSCAN08 went into error passive status
because the receive error counter exceeded 127. If not masked, an
error interrupt is pending while this flag is set.
This bit will be set when the MSCAN08 went into error passive status
due to the transmit error counter exceeding 127. If not masked, an
error interrupt is pending while this flag is set.
This bit will be set when the MSCAN08 went into bus-off status,
because the transmit error counter exceeded 255. If not masked, an
error interrupt is pending while this flag is set.
This bit will be set when a data overrun condition occurred. If not
masked, an error interrupt is pending while this flag is set.
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 = MSCAN08 went into error passive status.
0 = No warning interrupt has occurred.
1 = MSCAN08 went into error passive status.
0 = No warning interrupt has occurred.
1 = MSCAN08 went into warning status.
0 = No warning interrupt has occurred.
1 = A data overrun has been detected.
0 = No data overrun has occurred.
1 = The receive buffer is full. A new message is available.
0 = The receive buffer is released (not full).
CAN Controller
Freescale Semiconductor
MC68HC08QA24