TMPR3916 datasheet(143/225 Pages) TOSHIBA

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Chapter 7 CAN Module (TXCAN)

Preliminary

7-22

7.3

TXCAN Interrupt Logic

The TXCAN has the following interrupt sources:

•

Transmit interrupt: a message has been transmitted successfully

•

Receive interrupt: a message has been received successfully

•

Warning level interrupt: at least one of the two error counters is greater than or equal to 97

•

Error passive interrupt: TXCAN enters the error passive mode

•

Bus off interrupt: TXCAN enters the bus off mode

•

Time Stamp Overflow Interrupt

•

Transmission abort interrupt

•

Receive message lost interrupt

•

Wake-up interrupt: after wake-up from sleep mode this interrupt will be generated

•

Remote frame pending interrupt

These interrupt sources are divided in three groups: transmit interrupts, receive interrupts and global

interrupts. There is one interrupt output line for each group. CANRX is dedicated for receive interrupts,

CANTX is dedicated for transmit interrupts and CANEXC for the global interrupts.

Global Interrupt Flag Register (GIF)

The interrupt flag bits will be set if the corresponding interrupt condition has occurred. If the

corresponding interrupt mask bit is set in the GIM register, the interrupt line IRQ2 will go active high. As

long as an interrupt flag in the GIF register is set and the corresponding mask bit is also set, the interrupt line

IRQ2 will stay active high (“1”).

Bit

76543210

Name



RFPF

WUIF

RMLIF TRMABF TSOIF

BOIF

EPIF

WLIF

Bit

Name

Function

Reset

Value

Mode

15:8



Wired to zero

RFPF

Remote Frame Pending Flag

1 = A remote frame has been received (in a receive-mailbox). This

bit will not be set if the identifier of the remote frame matches to

a transmit-mailbox with RFH set.

0 = No remote frame has been received.

R/C

WUIF

Wake-Up Interrupt Flag

1 = The module has left the sleep mode.

0 = The module is still in sleep mode or normal operation.

R/C

RMLIF

Receive Message Lost Interrupt Flag

1 = At least for one of the mailboxes, configured as receive, an

overload condition has been occurred.

0 = No message has been lost.

R/C

TRMABF

Transmission Abort Flag

1 = Transmission aborted interrupt-flag. At least one of the bits in

the AA register is set.

0 = No transmission has been aborted.

R/C

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