mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 332

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MSCAN Controller
17.11 Memory Map
17.12 Programmer’s Model of Message Storage
Technical Data
332
The msCAN12 occupies 128 bytes in the CPU12 memory space. The
background receive buffer can only be read in test mode.
The following section details the organisation of the receive and transmit
message buffers and the associated control registers. For reasons of
programmer interface simplification the receive and transmit message
buffers have the same outline. Each message buffer allocates 16 bytes
in the memory map containing a 13 byte data structure. An additional
transmit buffer priority register (TBPR) is defined for the transmit buffers.
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Figure 17-10. msCAN12 Memory Map
MSCAN Controller
$010D
$013C
$013D
$0100
$0108
$0109
$010E
$010F
$0120
$013F
$0140
$014F
$0150
$015F
$0160
$016F
$0170
$017F
$0110
$011F
Foreground Receive buffer
Port CAN registers
Transmit buffer 0
Transmit buffer 1
Transmit buffer 2
Control registers
Error counters
Identifier filter
Reserved
Reserved
16 bytes
29 bytes
9 bytes
5 bytes
2 bytes
3 bytes
MC68HC912DG128 — Rev 3.0
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