MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 417

• Manufacturer Part Number: MC68HC908AZ32ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

24.13.2 Identifier Registers
68HC908AZ32A — Rev 0.0
MOTOROLA
Figure 24-11. Receive/Transmit Message Buffer Extended Identifier (IDRn) (Sheet 1 of 2)
$05b
$05b
$05b
$05b
$05b
$05b
Addr
0
1
2
3
4
5
Register
DSR0
DSR1
IDR0
IDR1
IDR2
IDR3
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
The identifiers consist of either 11 bits (ID10–ID0) for the standard, or 29
bits (ID28–ID0) for the extended format. ID10/28 is the most significant
bit and is transmitted first on the bus during the arbitration procedure.
The priority of an identifier is defined to be highest for the smallest binary
number.
SRR — Substitute Remote Request
Freescale Semiconductor, Inc.
This fixed recessive bit is used only in extended format. 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.
For More Information On This Product,
Bit 7
ID28
ID20
ID14
DB7
DB7
ID6
MSCAN Controller (MSCAN08)
Go to: www.freescale.com
ID27
ID19
ID13
DB6
DB6
ID5
6
ID26
ID18
ID12
DB5
DB5
ID4
5
SRR (=1) IDE (=1)
ID11
ID25
DB4
DB4
ID3
4
Programmer’s Model of Message Storage
ID24
ID10
DB3
DB3
ID2
3
MSCAN Controller (MSCAN08)
ID23
ID17
DB2
DB2
ID9
ID1
2
Advance Information
ID22
ID16
DB1
DB1
ID8
ID0
1
Bit 0
ID21
ID15
RTR
DB0
DB0
ID7
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