|
S9S12G128F0CLF Datasheet, PDF (506/1158 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual | |||
|
◁ |
Freescaleâs Scalable Controller Area Network (S12MSCANV3)
Module Base + 0x00X2
7
6
5
4
3
2
1
0
R
ID14
ID13
ID12
ID11
ID10
ID9
ID8
ID7
W
Reset:
x
x
x
x
x
x
x
x
Figure 16-28. Identiï¬er Register 2 (IDR2) â Extended Identiï¬er Mapping
Table 16-29. IDR2 Register Field Descriptions â Extended
Field
Description
7-0
ID[14:7]
Extended Format Identiï¬er â The identiï¬ers consist of 29 bits (ID[28:0]) for the extended format. ID28 is the
most signiï¬cant bit and is transmitted ï¬rst on the CAN bus during the arbitration procedure. The priority of an
identiï¬er is deï¬ned to be highest for the smallest binary number.
Module Base + 0x00X3
7
6
5
4
3
2
1
0
R
ID6
ID5
ID4
ID3
ID2
ID1
ID0
RTR
W
Reset:
x
x
x
x
x
x
x
x
Figure 16-29. Identiï¬er Register 3 (IDR3) â Extended Identiï¬er Mapping
Table 16-30. IDR3 Register Field Descriptions â Extended
Field
7-1
ID[6:0]
0
RTR
Description
Extended Format Identiï¬er â The identiï¬ers consist of 29 bits (ID[28:0]) for the extended format. ID28 is the
most signiï¬cant bit and is transmitted ï¬rst on the CAN bus during the arbitration procedure. The priority of an
identiï¬er is deï¬ned to be highest for the smallest binary number.
Remote Transmission Request â This ï¬ag reï¬ects the status of the remote transmission request bit in the
CAN frame. In the case of a receive buffer, it indicates the status of the received frame and supports the
transmission of an answering frame in software. In the case of a transmit buffer, this ï¬ag deï¬nes the setting of
the RTR bit to be sent.
0 Data frame
1 Remote frame
MC9S12G Family Reference Manual, Rev.1.10
506
Freescale Semiconductor
|
▷ |