msm9225 Oki Semiconductor, msm9225 Datasheet - Page 38

• Manufacturer Part Number: msm9225
• Description: Can Controller Area Network Controller
• Manufacturer: Oki Semiconductor

When same identifiers are set to multiple messages on message memory
When same identifiers are set to multiple messages on the message memory, operations are as
follows.
1. Transmit operation
2. Receive operation
• Transmit operation
• Receive operation
¡ Semiconductor
Messages are transmitted sequentially from the smaller message number.
The message is always written to the smallest message number.
For example, the same identifier is set at message numbers 1 to 4, as shown below.
If every message above is a transmit message, messages are transmitted sequentially in the
order of message number 5 Æ 0 Æ 6 Æ 1 Æ 2 Æ 3 Æ 4.
When the identifier "11100111001" is received from the CAN bus, received data is always
written to the message memory which is indicated by the message number 1.
Message
number
0
1
2
3
4
5
6
0
1
1
1
1
0
1
Identifier (example)
0
1
1
1
1
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
1
1
1
1
0
0
1
1
1
1
1
0
0
1
1
1
1
1
0
0
1
0
0
0
0
1
0
1
0
0
0
0
1
1
1
1
1
1
1
1
1
The range in which the same
identifier is set.
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