Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 用户手册
产品代码
DEMO9S12XHY256
Freescale’s Scalable Controller Area Network (S12MSCANV3)
MC9S12XHY-Family Reference Manual Rev. 1.04
Freescale Semiconductor
375
11.4
Functional Description
11.4.1
General
This section provides a complete functional description of the MSCAN.
11.4.2
Message Storage
Figure 11-39. User Model for Message Buffer Organization
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