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MC9S12G Datasheet, PDF (509/1160 Pages) Freescale Semiconductor, Inc – Ignores external trigger. Performs one conversion sequence and stops. | |||
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Freescaleâs Scalable Controller Area Network (S12MSCANV3)
16.3.3.1.1 IDR0âIDR3 for Extended Identiï¬er Mapping
Module Base + 0x00X0
R
W
Reset:
7
ID28
6
ID27
5
ID26
4
ID25
3
ID24
2
ID23
1
ID22
x
x
x
x
x
x
x
Figure 16-26. Identiï¬er Register 0 (IDR0) â Extended Identiï¬er Mapping
Table 16-27. IDR0 Register Field Descriptions â Extended
0
ID21
x
Field
Description
7-0
ID[28:21]
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 + 0x00X1
R
W
Reset:
7
ID20
6
ID19
5
ID18
4
SRR (=1)
3
IDE (=1)
2
ID17
1
ID16
x
x
x
x
x
x
x
Figure 16-27. Identiï¬er Register 1 (IDR1) â Extended Identiï¬er Mapping
0
ID15
x
Table 16-28. IDR1 Register Field Descriptions â Extended
Field
Description
7-5
ID[20:18]
4
SRR
3
IDE
2-0
ID[17:15]
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.
Substitute Remote Request â This ï¬xed 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 â This ï¬ag indicates whether the extended or standard identiï¬er format is applied in this buffer. In
the case of a receive buffer, the ï¬ag is set as received and indicates to the CPU how to process the buffer
identiï¬er registers. In the case of a transmit buffer, the ï¬ag indicates to the MSCAN what type of identiï¬er to send.
0 Standard format (11 bit)
1 Extended format (29 bit)
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.
MC9S12G Family Reference Manual, Rev.1.01
Freescale Semiconductor
509
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
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