MC912DG128A Motorola, MC912DG128A Datasheet - Page 290

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

Message Buffer
Outline
MSCAN Controller
MC68HC912DT128A Rev 2.0
290
NOTE:
Figure 52
transmit buffers for extended identifiers. The mapping of standard
identifiers into the IDR registers is shown in
byte data structure are undefined out of reset.
The foreground receive buffer can be read anytime but can not be
written. The transmit buffers can be read or written anytime.
shows the common 13 byte data structure of receive and
Figure 51 Message Buffer Organization
Address
1. x is 4, 5, 6, or 7 depending on which buffer RxFG,
2. Not applicable for receive buffers
MSCAN Controller
01xC
01xD
01xA
01xB
01xE
01xF
01x1
01x2
01x3
01x4
01x5
01x6
01x7
01x8
01x9
01x0
Tx0, Tx1, or Tx2 respectively.
(1)
Transmit buffer priority register
Data segment register 0
Data segment register 1
Data segment register 2
Data segment register 3
Data segment register 4
Data segment register 5
Data segment register 6
Data segment register 7
Data length register
Identifier register 1
Identifier register 2
Identifier register 3
Identifier register 0
Register name
Unused
Unused
Figure
53. All bits of the 13
(2)
MOTOROLA
22-mscan12