msm9225 Oki Semiconductor, msm9225 Datasheet - Page 31

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

3. Receive Procedure
¡ Semiconductor
The receive procedure is indicated below.
NO
Verify that IRF bit of CANI register
Verify reception message number
Set RCS bit of inside message
control register (X0hex) to "0"
Set IRF bit of CANI register
with TMN register (9Ehex)
Read reception data from
CANC register's (0Ehex)
Receive procedure
Receive complete
control register's
Inside message
(0Fhex) to "0"
(0Fhex) is "1"
data memory
CANA = 0?
YES
YES
RCS = 0?
NO
(MSM9225)
Interrupt signal is generated when
reception is complete
*) Verify that the interrupt is caused by the
reception completion.
*) Check whether new reception data has
been written to the same message while data
was being read.
*) Check whether reception data has been written
to another message while data was being read.
This step may be omitted and evaluation performed
based on the interrupt signal.
INT: 1 Æ 0
MSM9225
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