MC9S08DZ60MLF Datasheet, PDF (245/416 Pages) Freescale Semiconductor, Inc – MC9S08DZ60 Series Features

Chapter 12 Freescale’s Controller Area Network (S08MSCANV1)
Table 12-25. IDR0 Register Field Descriptions — Extended
Field
7:0
ID[28:21]
Description
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.
7
R
ID20
W
6
ID19
5
ID18
4
SRR⁽¹⁾
3
IDE⁽¹⁾
2
ID17
1
ID16
Reset:
x
x
x
x
x
x
x
Figure 12-26. Identifier Register 1 (IDR1) — Extended Identifier Mapping
1 _{SRR and IDE are both 1s.}
0
ID15
x
Table 12-26. IDR1 Register Field Descriptions — Extended
Field
7:5
ID[20:18]
4
SRR
3
IDE
2:0
ID[17:15]
Description
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.
Substitute Remote Request — This fixed recessive bit is used only in extended format. It must be set to 1 by
the user for transmission buffers and is stored as received on the CAN bus for receive buffers.
ID Extended — This flag indicates whether the extended or standard identifier format is applied in this buffer. In
the case of a receive buffer, the flag is set as received and indicates to the CPU how to process the buffer
identifier registers. In the case of a transmit buffer, the flag indicates to the MSCAN what type of identifier to send.
0 Standard format (11 bit)
1 Extended format (29 bit)
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.
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 12-27. Identifier Register 2 (IDR2) — Extended Identifier Mapping
Table 12-27. IDR2 Register Field Descriptions — Extended
Field
7:0
ID[14:7]
Description
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.
MC9S08DZ60 Series Data Sheet, Rev. 4
Freescale Semiconductor
245