MC68HC08AZ60 Datasheet, PDF (319/452 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
MSCAN Controller (MSCAN08)
Interrupts
Interrupt
Acknowledge
Interrupts are directly associated with one or more status flags in either
the MSCAN08 receiver flag register (CRFLG) or the MSCAN08
transmitter flag register (CTFLG). Interrupts are pending as long as one
of the corresponding flags is set. The flags in the above registers must
be reset within the interrupt handler in order to handshake the interrupt.
The flags are reset through writing a ‘1’ to the corresponding bit position.
A flag cannot be cleared if the respective condition still prevails.
NOTE: Bit manipulation instructions (BSET) shall not be used to clear interrupt
flags.
Interrupt Vectors
The MSCAN08 supports four interrupt vectors as shown in Table 1. The
vector addresses and the relative interrupt priority are dependent on the
chip integration and to be defined.
Table 1. MSCAN08 Interrupt Vector Addresses
Function
Wakeup
Error
Interrupts
Receive
Transmit
Source
WUPIF
RWRNIF
TWRNIF
RERRIF
TERRIF
BOFFIF
OVRIF
RXF
TXE0
TXE1
TXE2
Local
Mask
WUPIE
RWRNIE
TWRNIE
RERRIE
TERRIE
BOFFIE
OVRIE
RXFIE
TXEIE0
TXEIE1
TXEIE2
Global
Mask
I Bit
15-mscan
MOTOROLA
MC68HC08AZ60 — Rev 1.0
MSCAN Controller (MSCAN08)
319
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