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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 14-75 shows the processing not to skip resumption of transmitting a message that was stopped when<br />

transmission of an ABT message buffer was aborted.<br />

Figure 14-75. ABT Transmission Abort Processing (Normal Operation Mode with ABT)<br />

START<br />

TSTAT = 0?<br />

Clear ABTTRG bit<br />

ABTTRG = 0?<br />

Yes<br />

Clear TRQ bit of message<br />

buffer whose transmission<br />

was aborted<br />

Transmit abort<br />

Transmission start<br />

END<br />

Yes<br />

Yes<br />

Set ABTCLR bit<br />

Cautions 1. Do not set any transmission requests while ABT transmission abort processing is in<br />

progress.<br />

2. Make a CAN sleep mode/CAN stop mode transition request after ABTTRG bit is<br />

cleared (after ABT mode is aborted) following the procedure shown in Figure 14-75<br />

or 14-76. When clearing a transmission request in an area other than the ABT area,<br />

follow the procedure shown in Figure 14-74.<br />

R01UH0317EJ0004 Rev. 0.04 931<br />

Feb. 22, 2013<br />

No<br />

No<br />

No

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