Datasheet

Chapter 12 Freescale’s Controller Area Network (S08MSCANV1)
MC9S08DZ60 Series Data Sheet, Rev. 4
Freescale Semiconductor 243
Read: For transmit buffers, anytime when TXEx flag is set (see Section 12.3.6, “MSCAN Transmitter Flag
Register (CANTFLG)”) and the corresponding transmit buffer is selected in CANTBSEL (see
Register
Name
Bit 7 654321Bit0
IDR0
R
ID28 ID27 ID26 ID25 ID24 ID23 ID22 ID21
W
IDR1
R
ID20 ID19 ID18 SRR
(1)
1
SRR and IDE are both 1s.
IDE
(1)
ID17 ID16 ID15
W
IDR2
R
ID14 ID13 ID12 ID11 ID10 ID9 ID8 ID7
W
IDR3
R
ID6 ID5 ID4 ID3 ID2 ID1 ID0 RTR
2
2
The position of RTR differs between extended and standard indentifier mapping.
W
DSR0
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
DSR1
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
DSR2
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
DSR3
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
DSR4
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
DSR5
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
DSR6
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
DSR7
R
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
W
DLR
R
DLC3 DLC2 DLC1 DLC0
W
= Unused, always read ‘x’
Figure 12-23. Receive/Transmit Message Buffer — Extended Identifier Mapping