mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 342

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

Freescale’s Controller Area Network (MSCANV1)
15.4.2
15-26
ID[14:7]
ID[10:3]
ID[6:0]
Field
Field
Field
RTR
7:0
7:1
7:0
0
Reset:
Reset:
W
W
R
R
IDR0–IDR3 for Standard Identifier Mapping
Extended Format Identifier — The identifiers consist of 29 bits (ID[28:0]) for the extended format. ID28 is the
most significant bit and is transmitted first on the CAN bus during the arbitration procedure. The priority of an
identifier is defined to be highest for the smallest binary number.
Extended Format Identifier — The identifiers consist of 29 bits (ID[28:0]) for the extended format. ID28 is the
most significant bit and is transmitted first on the CAN bus during the arbitration procedure. The priority of an
identifier is defined to be highest for the smallest binary number.
Remote Transmission Request — This flag reflects 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 flag defines the setting of the RTR bit to
be sent.
0 Data frame
1 Remote frame
Standard Format Identifier — The identifiers consist of 11 bits (ID[10:0]) for the standard format. ID10 is the
most significant bit and is transmitted first on the CAN bus during the arbitration procedure. The priority of an
identifier is defined to be highest for the smallest binary number. See also ID bits in
ID10
ID6
x
x
7
7
Figure 15-27. Identifier Register 3 (IDR3) — Extended Identifier Mapping
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
Table 15-27. IDR2 Register Field Descriptions — Extended
Table 15-28. IDR3 Register Field Descriptions — Extended
Table 15-29. IDR0 Register Field Descriptions — Standard
Figure 15-28. Identifier Register 0 — Standard Mapping
ID5
ID9
6
x
6
x
ID4
ID8
5
x
5
x
ID3
ID7
4
x
4
x
Description
Description
Description
ID2
ID6
3
x
3
x
ID1
ID5
2
x
2
x
Table
Freescale Semiconductor
ID0
ID4
15-30.
1
x
1
x
RTR
ID3
0
x
0
x