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CHAPTER 19 FCAN CONTROLLER (V850/SC3)
User’s Manual U15109EJ3V0UD
578
(2/2)
IE
Specifies the enable/disable setting for interrupt requests
0
Interrupt requests disabled
1
Interrupt requests enabled
•
An interrupt request occurs when the IE bit is 1 under the following conditions.
•
When a message is sent from the transmit message buffer
•
When a message is received by the receive message buffer
•
When a remote frame has been transmitted from the receive message buffer
•
When a remote frame is received by the transmit message buffer when the auto
acknowledge function has not been set (RMDE0 bit = 0).
•
An interrupt request does not occur when the IE bit is 1 under the following conditions.
•
When a remote frame is received by the transmit message buffer when the auto
acknowledge function has been set (RMDE0 bit = 1)
•
An interrupt request occurs when the IE bit is 0 under the following conditions.
•
When a remote frame is received by the receive message buffer when the auto
acknowledge function has not been set (RMDE0 bit = 0).
MOVR
Message buffer overwrite
0
Overwrite does not occur after DN bit is cleared
1
Overwrite occurs at least once after DN bit is cleared
•
An overwrite of the message buffer occurs when the CAN module writes new data to the
message buffer or when the DN bit has already been set (1). The MOVR bit is updated
each time new data is stored in the message buffer.
RTR
Specification of frame type
0
Data frame transmit/receive
1
Remote frame transmit/receive
•
When the RTR bit has been set (1) for a transmit message, a remote frame is transmitted
instead of a data frame.
Remark
DN: Bit 2 of M_STATm (see
19.5.7 CAN message status registers 00 to 31
(M_STAT00 to M_STAT31)
.)