AN2283 Freescale Semiconductor / Motorola, AN2283 Datasheet - Page 5

• Manufacturer Part Number: AN2283
• Description: Scalable Controller Area Network (MSCAN)
• Manufacturer: Freescale Semiconductor / Motorola

Identifier Registers
MOTOROLA
NOTE:
Motorola Scalable Controller Area Network (MSCAN) Interrupts
The Identifier Registers consists of either 11 bits (ID10–ID0) for the standard
CAN 2.0 A/B format or 29 bits (ID28–ID0) for the extended CAN2.0 B format.
See
SRR — Substitute Remote Request
IDE — ID Extended
In the case of IDE = 0, ID17–ID0 and the RTR bits are not
Identifier Register 0 (IDR0)
Identifier Register 1 (IDR1)
Identifier Register 2 (IDR2)
Identifier Register 3 (IDR3)
Identifier Register 0 (IDR0)
Identifier Register 1 (IDR1)
Identifier Register 2 (IDR2)
Identifier Register 3 (IDR3)
This is a fixed recessive bit [recessive bit = 1 and dominant bit = 0] used only
in the extended format mode. It must be set to 1 by the user for transmission
buffers and will be stored as received on the CAN bus for receive buffers.
This flag indicates whether the extended or standard identifier format is
applied in this buffer.
Freescale Semiconductor, Inc.
Figure 3
For More Information On This Product,
1 = Extended format (29 bit)
0 = Standard format (11 bit)
ID10
ID28
ID20
ID24
Bit 7
Bit 7
ID2
ID6
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and
ID27
ID19
ID13
Figure 4. Extended Identifier Registers
Figure 3. Standard Identifier Registers
Figure 4
ID9
ID1
ID5
6
6
ID26
ID18
ID12
ID8
ID0
ID4
5
5
RTR
ID25
SRR
ID11
ID7
ID3
4
4
ID24
ID10
ID6
IDE
IDE
ID2
3
3
ID23
ID17
ID5
ID9
ID1
2
2
Transmit Structure Overview
applicable.
ID22
ID16
ID4
ID8
ID0
1
1
AN2283/D
ID21
ID15
RTR
Bit 0
Bit 0
ID3
ID7
5