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MB96300 Super Series Hardware Manual
Note:
This bit is used to concatenate two ore more Message Objects (up to 32) to build a FIFO Buffer. For
single Message Objects (not belonging to a FIFO Buffer) this bit must always be set to 1. For details on
the concatenation of Message Objects see section "Configuration of a FIFO Buffer", on page 624.
NEWDAT
No new data has been written into the data portion of this Message Object by the Message Handler since last time this flag was cleared
0
by the CPU.
1
The Message Handler or the CPU has written new data into the data portion of this Message Object.
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.
This message object is the source of an interrupt. The Interrupt Identifier in the Interrupt Register will point to this message object if
1
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.
Note:
When the lowest priority message buffer is used for transmission, setting TXRQST = "0" may cause a
delay of transmission, when TXRQST is set to "1" again.
CHAPTER 22 CAN CONTROLLER
New Data
609
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