msm9225 Oki Semiconductor, msm9225 Datasheet - Page 29

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

OPERATIONAL DESCRIPTION
MSM9225 operation is described below.
Operational Procedure
Procedures to set and operate various communication protocols are indicated below.
1. Initial setting
¡ Semiconductor
The initial setting procedure is indicated below.
Set the number of messages with
Set the interrupt control with the
(FRM/DCL3-DCL0, /ID28-ID0)
Set INIT bit of CANC register
the NMES register (1Ehex)
control register (X0hex)
Set the inside message
CANI register (0Fhex)
Set the message unit
settings complete?
Start initial setting
(0Ehex) to "1"
Read INIT bit
All message
YES
YES
INIT = 1?
NO
NO
*) Since the INIT bit cannot be set to "1" during
transmission or reception, read and verify its value.
Set INIT bit of the CANC register
with the TIOC register (2Fhex)
Set Tx0, Tx1, Rx0, Rx1 states
CAN bus timing settings
Group message settings
Initial setting complete
BTR1 (2Ehex)
(0Ehex) to "0".
BTR0 (1Fhex)
(GMR/GMSK)
MSM9225
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