Figure 19-3. Message Objects in a FIFO Buffer
START
No
Yes
Write MNUM to IFn Command Request
(Read Message to IFn Registers,
Reset NEWDAT = 0,
Reset INTPND = 0
MNUM = Interrupt Pointer
Read IFn Message Control
Read Data from IFn Data A,B
NEWDAT = 1
EOB = 1
Read Interrupt Pointer
Status Change
Interrupt Handling
END
Message Interrupt
Yes
MNUM = MNUM + 1
Case Interrupt Pointer else
0x0000 0x8000
No
19.3.12 Handling of Interrupts
If several interrupts are pending, the CAN Interrupt (CANINT) register points to the pending interrupt
with the highest priority, disregarding their chronological order. The status interrupt has the highest
1367June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C1294NCPDT Microcontroller
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