upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 665
upd70f3402
Manufacturer Part Number
upd70f3402
Description
32-/16-bit Single-chip Microcontroller With Can Interface
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3402.pdf
(852 pages)
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Figure 16-62 shows the processing for a transmit message buffer (MT[2:0] bits of CnMCONFm
register = 000B).
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
register
Set CnMIDLm and CnMIDHm
registers
Figure 16-62: Message Transmit Processing (Normal Operation Mode)
Data frame
User’s Manual U16702EE3V2UD00
r
Chapter 16 FCAN Controller
CnMCTRLm.CLEAR_RDY = 0
CnMCTRLm.CLEAR_TRQ = 0
CnMCTRLm.CLEAR_RDY = 1
CnMCTRLm.SET_RDY = 1
n
CnMCTRLm.SET_TRQ = 1
Data frame or remote frame?
CnMCTRLm.SET_RDY = 0
Set RDY bit
Set TRQ bit
Clear RDY bit
L
RDY = 0?
TRQ = 0?
END
START
r r
Yes
_R
Yes
No
No
Remote frame
Set CnMDLCm register
Set RTR bit of CnMCONFm
register
Set CnMIDLm and CnMIDHm
registers
r
665
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