upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 753
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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CAN Controller (CAN)
Clear RTR bit of
CnMDATAxm register,
CnMDLCm register, and
CnMCONFm register.
Set CnMIDLm and
CnMIDHm registers.
Figure 19-42
Data frame
Caution
No
Transmission via software polling
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.
Preliminary User’s Manual U17566EE1V2UM00
Read CnTGPT register.
Clear CINTS0 bit = 1
Clear TOVF bit = 1
Clear CINTS0 bit.
Clear RDY bit = 1
CINTS0 bit = 1?
Set RDY bit = 0
remote frame?
Clear TOVF bit.
Clear RDY bit.
TOVF bit = 1?
RDY bit = 0?
Data frame
Yes
START
or
Yes
Yes
No
No
Remote frame
Set RTR bit of CnMDLCm
register and CnMCONFm
register.
Set CnMIDLm and
CnMIDHm registers.
Clear RDY bit = 0
Clear TRQ bit = 0
Set RDY bit = 1
Set TRQ bit = 1
THPM bit = 1?
Set RDY bit.
Set TRQ bit.
END
Yes
Chapter 19
No
753
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