upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 667

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

Caution:
The TRQ bit should be set after the RDY bit is set.
The RDY bit and TRQ bit should not be set at the same time.
Set CnMDATAxm register
Set CnMDLCm register,
Clear RTR bit of CnMCONFm
Set CnMIDLm and CnMIDHm
registers
register.
t
Figure 16-64: Transmission via Interrupt (Using CnLOPT register)
s
.
LC
Data frame
,
User’s Manual U16702EE3V2UD00
m
Chapter 16 FCAN Controller
CnMCRTLm.CLEAR_RDY = 0
CnMCRTLm.CLEAR_TRQ = 0
CnMCRTLm.CLEAR_RDY = 1
CnMCRTLm.SET_RDY = 1
CnMCRTLm.SET_TRQ = 1
Data frame or remote frame?
CnMCRTLm.SET_RDY = 0
Read CnLOPT register
Transmit completion
interrupt processing
Set RDY bit
Set TRQ bit
Clear RDY bit
RDY = 0?
END
START
D
Yes
n
No
Set CnMDLCm register
Set RTR bit of CnMCONFm
register.
Set CnMIDLm and CnMIDHm
registers
Remote frame
I
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