NXP Semiconductors MC9S12G - Message Storage

Scalable Controller Area Network (S12MSCANV3)
MC9S12G Family Reference Manual Rev.1.27
604 NXP Semiconductors
18.4.2 Message Storage
Figure 18-39. 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.
18.4.2.1 Message Transmit Background
Modern application layer software is built upon two fundamental assumptions:
MSCAN
Rx0
Rx1
CAN Receive / Transmit Engine Memory Mapped I/O
CPU bus
MSCAN
Tx2
TXE2
PRIO
Receiver
Transmitter
RxBG
TxBG
Tx0
TXE0
PRIO
TxBG
Tx1
PRIO
TXE1
TxFG
CPU bus
Rx2
Rx3
Rx4
RXF
RxFG