msm9225 Oki Semiconductor, msm9225 Datasheet - Page 34

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

¡ Semiconductor
MSM9225
Microcontroller (user) operation
MSM9225 operation
Start automatic response
Set MMA bit of inside message
control register (X0hex) to "1"
Read MMA bit
MMA = 1?
NO
Transmit data
setting
YES
Set the inside message data register
(X0hex) as shown in previous table
Write transmit data to data memory
Set MMA bit to "0"
Remote frame reception?
NO
YES
Remote reception
and transmission
Data frame transmission
Transmission completion generates
interrupt
INT: 1 Æ 0
Verify that ITF bit of CANC
register (0Fhex) is "1"
Remote transmission
verification
Set ITF bit to "0"
Set RSC bit of inside message
control register to "0"
Figure: Automatic Response Operation Flow Chart
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