MC68HC08AZ60 Datasheet, PDF (343/452 Pages) Motorola, Inc – Advance Information

39-mscan
MOTOROLA
Freescale Semiconductor, Inc.
MSCAN Controller (MSCAN08)
Programmer’s Model of Control Registers
RWRNIF — Receiver Warning Interrupt Flag
This flag is set when the MSCAN08 goes into warning status due to
the receive error counter (REC) exceeding 96 and neither one of the
Error Interrupt flags or the Bus-off Interrupt flag is set¹. If not masked,
an error interrupt is pending while this flag is set.
1 = MSCAN08 has gone into receiver warning status.
0 = No receiver warning status hasbeen reached.
TWRNIF — Transmitter Warning Interrupt Flag
This flag is set when the MSCAN08 goes into warning status due to
the transmit error counter (TEC) exceeding 96 and neither one of the
error interrupt flags or the bus-off interrupt flag is set². If not masked,
an error interrupt is pending while this flag is set.
1 = MSCAN08 has gone into transmitter warning status.
0 = No transmitter warning status has been reached.
RERRIF — Receiver Error Passive Interrupt Flag
This flag is set when the MSCAN08 goes into error passive status due
to the receive error counter exceeding 127 and the bus-off interrupt
flag is not set³. If not masked, an Error interrupt is pending while this
flag is set.
1 = MSCAN08 has gone into receiver error passive status.
0 = No receiver error passive atatus has been reached.
TERRIF — Transmitter Error Passive Interrupt Flag
This flag is set when the MSCAN08 goes into error passive status due
to the Transmit Error counter exceeding 127 and the Bus-off interrupt
flag is not set⁴. If not masked, an Error interrupt is pending while this
flag is set.
1 = MSCAN08 went into transmit error passive status.
0 = No transmit error passive atatus has been reached.
1. Condition to set the flaf: RWRNIF = (96 ð REC) & RERRIF & TERRIF & BOFFIF
2. Condition to set the flaf: TWRNIF = (96 ð TEC) & RERRIF & TERRIF & BOFFIF
3. Condition to set the flaf: RERRIF = (127 ð REC ð 255) & BOFFIF
4. Condition to set the flaf: TERRIF = (128 ð TEC ð 255) & BOFFIF
MC68HC08AZ60 — Rev 1.0
MSCAN Controller (MSCAN08)
343
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