MC912DG128A Motorola, MC912DG128A Datasheet - Page 274

• Manufacturer Part Number: MC912DG128A
• Description: Microcontrollers
• Manufacturer: Motorola

Transmit Structures
MSCAN Controller
MC68HC912DT128A Rev 2.0
274
The msCAN12 has a triple transmit buffer scheme in order 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
additional transmit buffer priority register (TBPR) contains an 8-bit so
called local priority field (PRIO) (see
(TBPR)).
Figure 42 User Model for Message Buffer Organization
42.
msCAN12
MSCAN Controller
Programmer’s Model of Message
RxBG
RxFG
Tx0
Tx1
Tx2
PRIO
PRIO
PRIO
Transmit Buffer Priority Registers
RXF
TXE
TXE
TXE
CPU bus
Storage). An
MOTOROLA
6-mscan12