MSM9225 データシートの表示（PDF） - Oki Electric Industry

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MSM9225

CAN (Controller Area Network) Controller

Oki Electric Industry 

¡ Semiconductor

MSM9225

3. Identifier 1 (X2hex)

This register sets the identifier.

Set this register for each message.

The bit configuration is as follows:

Address MSB

LSB

¥ 2h

76543210

IDB18 :

IDB19 :

IDB20 :

IDB21 :

IDB22 :

IDB23 :

IDB24 :

IDB25 :

Identifier

(1) Identifier: IDB25 to IDB18

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.

4. Address: X3 to XDhex

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:

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