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RL78/D1A User's Manual: Hardware - Renesas

RL78/D1A User's Manual: Hardware - Renesas

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Under development<br />

Preliminary document<br />

Specifications in this document are tentative and subject to change.<br />

<strong>RL78</strong>/<strong>D1A</strong> CHAPTER 14 CAN CONTROLLER<br />

Figure 14-67 shows the processing for a transmit message buffer during transmission (MT [2:0] bits of C0MCONFm<br />

register = 000B).<br />

Figure 14-67. Message Buffer Redefinition during Transmission<br />

Data frame<br />

Set C0MDATAxm register<br />

Set C0MDLCm register<br />

Clear RTR bit of C0MCONFm<br />

register<br />

Set C0MIDLm and C0MIDHm<br />

registers<br />

START<br />

Transmit abort process<br />

Clear RDY bit<br />

RDY = 0?<br />

END<br />

Yes<br />

Data frame or remote frame?<br />

Set RDY bit<br />

Transmit?<br />

Yes<br />

Wait for 1CAN data bits<br />

Set TRQ bit<br />

R01UH0317EJ0004 Rev. 0.04 923<br />

Feb. 22, 2013<br />

No<br />

Remote frame<br />

Set C0MDLCm register<br />

Set RTR bit of C0MCONFm<br />

register<br />

Set C0MIDLm and C0MIDHm<br />

registers<br />

No

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