mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 315

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC912DG128 — Rev 3.0
MOTOROLA
On reception, each message is checked to see if it passes the filter (for
details see
RxBG. The msCAN12 copies the content of RxBG into RxFG
RXF flag, and generates a receive interrupt to the CPU
receive handler has to read the received message from RxFG and then
reset the RXF flag in order to acknowledge the interrupt and to release
the foreground buffer. A new message, which can follow immediately
after the IFS field of the CAN frame, is received into RxBG.
The over-writing of the background buffer is independent of the identifier
filter function.
1. Only if the RXF flag is not set.
2. The receive interrupt is generated only if not masked. A polling scheme can be applied on RXF
also.
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MSCAN Controller
Filter) and in parallel is written into
(2)
MSCAN Controller
Message Storage
. The user’s
Technical Data
(1)
, sets the
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