msm9225 Oki Semiconductor, msm9225 Datasheet - Page 32

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

4. Message unit rewrites during operation
¡ Semiconductor
The procedure to rewrite the IDentifier (ID) and Data Length Code (DLC) during operation
is indicated below. The number of messages set in the NMES register at the initial setting is
the number of (valid) messages that may be rewritten.
Set MMA bit of inside message
Set MMA bit of inside message
control register (X0hex) to "1"
FRM/DLC3-DLC0/ID28-ID0
Rewrite message unit
control register to "0"
settings complete?
Rewrite complete
Read MMA bit
Start rewrite
All message
MMA = 1?
YES
YES
NO
NO
MSM9225
32/73