XC912BC32CFU8 Motorola Semiconductor Products, XC912BC32CFU8 Datasheet - Page 290

• Manufacturer Part Number: XC912BC32CFU8
• Description: M68HC12B Family Data Sheet
• Manufacturer: Motorola Semiconductor Products

msCAN12 Controller
Data Sheet
290
WUPIF — Wakeup Interrupt Flag
RWRNIF — Receiver Warning Interrupt Flag
TWRNIF — Transmitter Warning Interrupt Flag
RERRIF — Receiver Error Passive Interrupt Flag
TERRIF — Transmitter Error Passive Interrupt Flag
BOFFIF — Bus-Off Interrupt Flag
1. Condition to set the flag: RWRNIF = (96 ≤ REC ≤ 127) & RERRIF & TERRIF & BOFFIF
2. Condition to set the flag: TWRNIF = (96 ≤ TEC ≤ 127) & RERRIF & TERRIF & BOFFIF
3. Condition to set the flag: RERRIF = (128 ≤ REC ≤ 255) & BOFFIF
4. Condition to set the flag: TERRIF = (128 ≤ TEC ≤ 255) & BOFFIF
If the msCAN12 detects bus activity while in sleep mode, it sets the WUPIF flag.
If not masked, a wakeup interrupt is pending while this flag is set.
This flag is set when the msCAN12 goes into warning status due to the receive
error counter (REC) exceeding 96 and neither one of the error interrupt flags nor
the bus-off interrupt flag is set
while this flag is set.
This bit will be set when the msCAN12 goes into warning status due to the
transmit error counter (TEC) exceeding 96 and neither one of the error interrupt
flags nor the bus-off interrupt flag is set
pending while this flag is set.
This flag is 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
This flag is 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
This flag is set when the msCAN12 goes into bus-off status, due to the transmit
error counter exceeding 255. It cannot be cleared before the msCAN12 has
monitored 128 times 11 consecutive recessive bits on the bus. If not masked,
an error interrupt is pending while this flag is set.
0 = No wakeup activity has been observed while in sleep mode.
1 = msCAN12 has detected activity on the bus and requested wakeup.
0 = No receiver warning status has been reached.
1 = msCAN12 went into receiver warning status.
0 = No transmitter warning status has been reached.
1 = msCAN12 went into transmitter warning status.
(3)
0 = No receiver error passive status has been reached.
1 = msCAN12 went into receiver error passive status.
(4)
0 = No transmitter error passive status has been reached.
1 = msCAN12 went into transmitter error passive status.
0 = No bus-off status has been reached.
1 = msCAN12 went into bus-off status.
. If not masked, an error interrupt is pending while this flag is set.
. If not masked, an error interrupt is pending while this flag is set.
msCAN12 Controller
(1)
. If not masked, an error interrupt is pending
(2)
. If not masked, an error interrupt is
M68HC12B Family — Rev. 8.0
MOTOROLA