TMPR3916 datasheet(144/225 Pages) TOSHIBA

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Chapter 7 CAN Module (TXCAN)

Preliminary

7-23

Bit

Name

Function

Reset

Value

Mode

TSOIF

Time Stamp Counter Overflow Interrupt Flag

1 = There was at least one overflow of the time stamp counter since

this bit has been cleared.

0 = There was no overflow of the time stamp counter since this bit

has been cleared.

R/C

BOIF

Bus Off Interrupt Flag

1 = The CAN has entered the bus off mode.

0 = The CAN module is still in bus on mode.

R/C

EPIF

Error Passive Interrupt Flag

1 = The CAN module has entered the error passive mode.

0 = The CAN module is still in error active mode.

R/C

WLIF

Warning Level Interrupt Flag

1 = At least one of the error counters has reached the warning level.

0 = None of the error counters has reached the warning level.

R/C

Note:

All interrupt flags in GIF are independent of the interrupt mask bits. The interrupt flags in

GIF can be cleared by writing a “1” to the corresponding bit position. Writing a “0” has no

effect.

Global Interrupt Mask Register (GIM)

Bit

76543210

Name



RFPF

WUIF

RMLIF TRMABF TSOIF

BOIF

EPIF

WLIF

The attachment of bits in GIM to the interrupt conditions is equal to that in GIF. Each interrupt flag bit in

GIF is masked by the corresponding mask bit in GIM. After power-up, all bits are cleared.

7.3.1

Mailbox Interrupts

There are two separate interrupt output lines for the mailboxes. One interrupt output for mailboxes,

which are configured as transmit and one for mailboxes which are configured as receive.

There are two interrupt flag registers and one interrupt mask register. One interrupt flag register is for

receive mailboxes and one for transmit mailboxes. The interrupt mask register is used for transmit and

receive mailboxes.

Mailbox Interrupt Mask Register (MBIM)

The settings in MBIM determine, for which mailbox the interrupt generation is enabled or disabled.

If a bit in MBIM is “0”, the interrupt generation for the corresponding mailbox is disabled and if it is

“1”, the interrupt generation is enabled. Reset value of MBIM is 0.

Bit

Name

MBIM

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