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Chapter 34 CAN Controller
2.Register Description
(Note) The Data Length Code of a Message Object must be defined the same as in all the corresponding
objects with the same identifier at other nodes. When the Message Handler stores a data frame, it
will write the DLC to the value given by the received message.
MsgLst Message Lost (only valid for Message Objects with direction = receive)
0 No message lost since last time this bit was reset by the CPU.
1 The Message Handler stored a new message into this object when NewDat was still set, the
CPU has lost a message.
RxIE Receive Interrupt Enable
0 IntPnd will be left unchanged after a successful reception of a frame.
1 IntPnd will be set after a successful reception of a frame.
TxIE Transmit Interrupt Enable
0 IntPnd will be left unchanged after the successful transmission of a frame.
1 IntPnd will be set after a successful transmission of a frame.
IntPnd Interrupt Pending
0 This message object is not the source of an interrupt.
1 This message object is the source of an interrupt. The Interrupt Identifier in the Interrupt Regis-
ter will point to this message object if there is no other interrupt source with higher priority.
RmtEn Remote Enable
0 At the reception of a Remote Frame, TxRqst is left unchanged.
1 At the reception of a Remote Frame, TxRqst is set.
TxRqst Transmit Request
0 This Message Object is not waiting for transmission.
1 The transmission of this Message Object is requested and is not yet done.
DLC3-0 Data Length Code
0-8 Data Frame has 0-8 data bytes.
9-15 Data Frame has 8 data bytes.
Data 0 1st data byte of a CAN Data Frame
Data 1 2nd data byte of a CAN Data Frame
Data 2 3rd data byte of a CAN Data Frame
Data 3 4th data byte of a CAN Data Frame
Data 4 5th data byte of a CAN Data Frame
Data 5 6th data byte of a CAN Data Frame
Data 6 7th data byte of a CAN Data Frame
Data 7 8th data byte of a CAN Data Frame