MC68HC12 MOTOROLA [Motorola, Inc], MC68HC12 Datasheet - Page 347

• Manufacturer Part Number: MC68HC12
• Description: The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit
• Manufacturer: MOTOROLA [Motorola, Inc]

18.12.1 Message Buffer Outline
MC68HC912DT128A — Rev 4.0
MOTOROLA
ADDR
1. x is 4, 5, 6, or 7 depending on which buffer RxFG, Tx0, Tx1, or Tx2 respectively.
$01xC
$01xA
$01xB
$01x0
$01x1
$01x2
$01x3
$01x4
$01x5
$01x6
$01x7
$01x8
$01x9
(1)
Figure 18-12. Receive/Transmit Message Buffer Extended Identifier
REGISTER
NOTE:
DSR0
DSR1
DSR2
DSR3
DSR4
DSR5
DSR6
DSR7
IDR0
IDR1
IDR2
IDR3
DLR
Figure 18-12
transmit buffers for extended identifiers. The mapping of standard
identifiers into the IDR registers is shown in
13 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.
R/W
W
W
W
W
W
W
W
W
W
W
W
W
W
R
R
R
R
R
R
R
R
R
R
R
R
R
BIT 7
ID28
ID20
ID14
DB7
DB7
DB7
DB7
DB7
DB7
DB7
DB7
ID6
shows the common 13 byte data structure of receive and
MSCAN Controller
ID27
ID19
ID13
DB6
DB6
DB6
DB6
DB6
DB6
DB6
DB6
ID5
6
ID18
ID12
ID26
DB5
DB5
DB5
DB5
DB5
DB5
DB5
DB5
ID4
5
SRR (1) IDE (1)
ID25
ID11
DB4
DB4
DB4
DB4
DB4
DB4
DB4
DB4
ID3
4
Programmer’s Model of Message Storage
DLC3
ID24
ID10
DB3
DB3
DB3
DB3
DB3
DB3
DB3
DB3
ID2
3
Figure
DLC2
ID23
ID17
DB2
DB2
DB2
DB2
DB2
DB2
DB2
DB2
ID9
ID1
18-13. All bits of the
2
MSCAN Controller
DLC1
ID22
ID16
DB1
DB1
DB1
DB1
DB1
DB1
DB1
DB1
ID0
ID8
Technical Data
1
DLC0
BIT 0
ID21
ID15
RTR
DB0
DB0
DB0
DB0
DB0
DB0
DB0
DB0
ID7
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