upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 720
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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
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Chapter 19
720
19.10.5 Remote frame reception
Caution
In all the operation modes, when a remote frame is received, the message
buffer that is to store the remote frame is searched from all the message
buffers satisfying the following conditions.
• Used as a message buffer
• Set as a transmit message buffer
• Ready for reception
• Set to transmit message
• Transmission request is not set.
Upon acceptance of a remote frame, the following actions are executed if the
ID of the received remote frame matches the ID of a message buffer that
satisfies the above conditions.
• The CnMDLCm.DLC3 to CnMDLCm.DLC0 bits store the received DLC
• The CnMDATA0m to CnMDATA7m registers in the data area are not
• The CnMCTRLm.DN bit is set to 1.
• The CnINTS.CINTS1 bit is set to 1 (if the CnMCTRLm.IE bit of the message
• The receive completion interrupt (INTCnRE) is output (if the IE bit of the
• The message buffer number is recorded in the receive history list.
When a message buffer is searched for receiving and storing a remote frame,
overwrite control by the CnMCONFm.OWS bit of the message buffer and the
DN bit are not affected.
If more than one transmit message buffer has the same ID and the ID of the
received remote frame matches that ID, the remote frame is stored in the
transmit message buffer with the lowest message buffer number.
Preliminary User’s Manual U17566EE1V2UM00
(CnMCONFm.MA0 bit set to 1.)
(CnMCONFm.MT2 to CnMCONFm.MT0 bits set to 000B)
(CnMCTRLm.RDY bit set to 1.)
(CnMCONFm.RTR bit is cleared to 0.)
(CnMCTRLm.TRQ bit is set to 1.)
value.
updated (data before reception is saved).
buffer that receives and stores the frame is set to 1).
message buffer that receives and stores the frame is set to 1 and if the
CnIE.CIE1 bit is set to 1).
CAN Controller (CAN)
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