MC68HC908GZ8 Datasheet, PDF (180/344 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
MSCAN08 Controller (MSCAN08)
16.12.1 Message Buffer Outline
Figure 16-11 shows the common 13-byte data structure of receive and transmit
buffers for extended identifiers. The mapping of standard identifiers into the IDR
registers is shown in Figure 16-12. All bits of the 13-byte data structure are
undefined out of reset.
NOTE: The foreground receive buffer can be read anytime but cannot be written. The
transmit buffers can be read or written anytime.
Addr.
Register
Bit 7
6
5
4
3
2
$05b0
Read:
IDR0
ID28
ID27
ID26
ID25
ID24
ID23
Write:
$05b1
Read:
IDR1
ID20
ID19
ID18 SRR (=1) IDE (=1)
ID17
Write:
$05b2
Read:
IDR2
ID14
ID13
ID12
ID11
ID10
ID9
Write:
$05b3
Read:
IDR3
ID6
ID5
ID4
ID3
ID2
ID1
Write:
$05b4
Read:
DSR0
DB7
DB6
DB5
DB4
DB3
DB2
Write:
$05b5
Read:
DSR1
DB7
DB6
DB5
DB4
DB3
DB2
Write:
$05b6
Read:
DSR2
DB7
DB6
DB5
DB4
DB3
DB2
Write:
$05b7
Read:
DSR3
DB7
DB6
DB5
DB4
DB3
DB2
Write:
$05b8
Read:
DSR4
DB7
DB6
DB5
DB4
DB3
DB2
Write:
$05b9
Read:
DSR5
DB7
DB6
DB5
DB4
DB3
DB2
Write:
= Unimplemented
Figure 16-11. Receive/Transmit Message Buffer
Extended Identifier (IDRn)
Data Sheet
180
MSCAN08 Controller (MSCAN08)
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1
Bit 0
ID22
ID21
ID16
ID15
ID8
ID7
ID0
RTR
DB1
DB0
DB1
DB0
DB1
DB0
DB1
DB0
DB1
DB0
DB1
DB0
MC68HC908GZ8
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