MC9S12P128 Datasheet, PDF (284/564 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Freescale’s Scalable Controller Area Network (S12MSCANV3)
8.4.2 Message Storage
CAN Receive / Transmit Engine
MSCAN
Rx0
Rx1
Rx2
Rx3
Rx4
Receiver
Memory Mapped I/O
RXF
CPU bus
Tx0
TXE0
MSCAN
PRIO
Tx1
TXE1
PRIO
Tx2
TXE2
CPU bus
Transmitter
PRIO
Figure 8-39. User Model for Message Buffer Organization
The MSCAN facilitates a sophisticated message storage system which addresses the requirements of a
broad range of network applications.
8.4.2.1 Message Transmit Background
Modern application layer software is built upon two fundamental assumptions:
S12P-Family Reference Manual, Rev. 1.12
284
Freescale Semiconductor