MC68HC08AZ60 Datasheet, PDF (344/452 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
MSCAN Controller (MSCAN08)
BOFFIF — Bus-Off Interrupt Flag
This flag is set when the MSCAN08 goes into bus-off status, due to
the transmit error counter exceeding 255. It cannot be cleared before
the MSCAN08 has monitored 128 times 11 consecutive ‘recessive’
bits on the bus. If not masked, an Error interrupt is pending while this
flag is set.
1 = MSCAN08has gone into bus-off status.
0 = No bus-off status has bee reached.
OVRIF — Overrun Interrupt Flag
This flag is set when a data overrun condition occurs. If not masked,
an error interrupt is pending while this flag is set.
1 = A data overrun has been detected since last clearing the flag.
0 = No data overrun has occurred.
RXF — Receive Buffer Full
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
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.
1 = The receive buffer is full. A new message is available.
0 = The receive buffer is released (not full).
NOTE: To ensure data integrity, no registers of the receive buffer shall be read
while the RXF flag is cleared.
NOTE: The CRFLG register is held in the reset state when the SFTRES bit in
CMCR0 is set.
MC68HC08AZ60 — Rev 1.0
344
MSCAN Controller (MSCAN08)
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