MC912DG128A Motorola, MC912DG128A Datasheet - Page 301

• Manufacturer Part Number: MC912DG128A
• Description: Microcontrollers
• Manufacturer: Motorola

33-mscan12
MOTOROLA
RERRIF — Receiver Error Passive Interrupt Flag
TERRIF — Transmitter Error Passive Interrupt Flag
BOFFIF — BUSOFF Interrupt Flag
OVRIF — Overrun Interrupt Flag
RXF — Receive Buffer Full
1. RERRIF = (128 < REC < 255) & BOFFIF
2. TERRIF = (128 < TEC < 255) & BOFFIF
This bit will be set when the msCAN12 goes into error passive status
due to the Receive Error counter (REC) exceeding 127 and the
Bus-Off interrupt flag is not set
pending while this flag is set.
This bit will be set when the msCAN12 goes into error passive status
due to the Transmit Error counter (TEC) exceeding 127 and the
Bus-Off interrupt flag is not set
pending while this flag is set.
This bit will be set when the msCAN12 goes into BUSOFF status, due
to the Transmit Error counter exceeding 255. It cannot be cleared
before the msCAN12 has monitored 128*11 consecutive recessive
bits on the bus. 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 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
0 = No receiver error passive status has been reached.
1 = msCAN12 went into receiver error passive status.
0 = No transmitter error passive status has been reached.
1 = msCAN12 went into transmitter error passive status.
0 = No BUSOFF status has been reached.
1 = msCAN12 went into BUSOFF status.
0 = No data overrun has occurred.
1 = A data overrun has been detected.
MSCAN Controller
1
2
. If not masked, an Error interrupt is
. If not masked, an Error interrupt is
Programmer’s Model of Control Registers
MC68HC912DT128A Rev 2.0
MSCAN Controller
301