msm9225 Oki Semiconductor, msm9225 Datasheet - Page 10

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

¡ Semiconductor
3. Identifier 1 (X2hex)
4. Address: X3 to XDhex
(1) Identifier: IDB25 to IDB18
This register sets the identifier.
Set this register for each message.
The bit configuration is as follows:
For standard format (IDFM = 0), addresses X3 to XAhex become the transmission/receive
data storage area.
For extended format (IDFM = 1), addresses X3 to X5hex are used to set the identifier field, and
addresses X6 to XDhex become the transmission/receive data storage area.
For both, a maximum of 8 bytes of transmission/receive data can be stored, but the number
of transmittable/receivable bytes must have been set by data length code.
At reset, message content is undefined.
The relationship between address and identifier bits for extended format (IDFM = 1) is as
follows:
These bits set the lower 8 bits of the 11 bits of the identifier field.
For standard format (IDFM = 0), the lower 8 bits of the 11 bits are set.
For extended format (IDFM = 1), ID25 to ID18 of the 29 bits (ID28 to ID0) are set.
At reset, these bits are undefined.
¥ 2h
Address MSB
7
6
5
4
3
2
1
LSB
0
IDB18 :
IDB19 :
IDB20 :
IDB21 :
IDB22 :
IDB23 :
IDB24 :
IDB25 :
Identifier
MSM9225
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