NEC V850ES/F 3-L Series User Manual page 597

CAN Controller (CAN)
Caution
Set RDY Clear RDY
0 1
1 0
Other than above
1. Set IE bit and RDY bit always separately.
2. Do not set the DN bit to 1 by software. Be sure to write 0 to bit 10.
3. Do not set the TRQ bit and the RDY bit (1) at the same time. Set the RDY bit
(1) before setting the TRQ bit.
4. Do not clear the RDY bit (0) during message transmission. Follow the
transmission abort process about clearing the RDY bit (0) for redefinition of
the message buffer.
5. Clear again when RDY bit is not cleared even if this bit is cleared.
6. Be sure that RDY is cleared before writing to the other message buffer
registers, by checking the status of the RDY bit.
User's Manual U18743EE1V2UM00
Setting of RDY bit
RDY bit is cleared to 0.
RDY bit is set to 1.
RDY bit is not changed.
Chapter 18
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