mc68hc908qz16 Freescale Semiconductor, Inc, mc68hc908qz16 Datasheet - Page 125

• Manufacturer Part Number: mc68hc908qz16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

12.4.3 Transmit Structures
The MSCAN08 has a triple transmit buffer scheme to allow multiple messages to be set up in advance
and to achieve an optimized real-time performance. The three buffers are arranged as shown in
Figure
All three buffers have a 13-byte data structure similar to the outline of the receive buffers (see
Programmer’s Model of Message
an 8-bit “local priority” field (PRIO) (see
Freescale Semiconductor
12-3.
MSCAN08
Figure 12-3. User Model for Message Buffer Organization
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Storage). An additional transmit buffer priority register (TBPR) contains
RxBG
12.12.5 Transmit Buffer Priority
RxFG
Tx0
Tx1
Tx2
PRIO
PRIO
PRIO
RXF
TXE
TXE
TXE
CPU08 I BUS
Registers).
Message Storage
12.12
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