Message
Object 1
Message
Object
Last
Receive OK
Transmit OK
Receive OK
Transmit OK
Message Object Interrupts
IE0
DCAN0INT
IE1
DCAN1INT
Message Object Interrupts
can be Routed to
DCAN0INT or DCAN1INT Line
IntPndMux(n)
IntPndMux(1)
To Status Interrupt
See Fig 10.6
RxIE
TxIE
RxIE
TxIE
Message
Object 1
Message
Object
Last
Receive OK
Transmit OK
Receive OK
Transmit OK
Message
Object
Interrupt
Bus Off
Error
Parity
Warning
Error
WakeUpPnd
LEC
RX OK
TX OK
EIE
SIE
Message Object Interrupts
Status Change Interrupts
Error Interrupts
IE0
DCAN0INT
Fig 10.7)
(See
Error and Status Change
Interrupts are Routed to
DCAN0INT line
L
Functional Description
23.3.10.3 Error Interrupts
The events PER, BOff and EWarn, monitored in the Error and Status register, DCAN ES, belong to the
error interrupts. The error interrupt group can be enabled by setting bit EIE in the CAN Control register.
Error interrupts can only be routed to interrupt line DCAN0INT, which has to be enabled by setting IE0 in
the CAN Control register.
Figure 23-9. CAN Interrupt Topology 1
Figure 23-10. CAN Interrupt Topology 2
3895
SPRUH73H – October 2011 – Revised April 2013
Controller Area Network (CAN)
Copyright © 2011–2013, Texas Instruments Incorporated