Datasheet

Section 15 Controller Area Network for Tiny (TinyCAN)
Rev. 4.00 Mar. 15, 2006 Page 313 of 556
REJ09B0026-0400
Bit Bit Name
Initial
Value R/W Description
3 TOWI 0 R/(W)* Transmit Overload Warning Interrupt Flag
Status flag indicating the error warning state caused by
TEC.
[Setting condition]
When TEC ≥ 96
[Clearing condition]
When 1 is written to this bit
2 RFRI 0 R Remote Frame Request Interrupt Flag
Status flag indicating that a remote frame has been
received in a Mailbox.
[Setting condition]
When remote frame reception is completed, and the
corresponding MBIMR bit is 0
[Clearing condition]
When all bits in RFPR are cleared to 0
1 DFRI 0 R Data Frame Receive Message Interrupt Flag
Status flag indicating that a data frame has been received
in a Mailbox.
[Setting condition]
When message reception is completed, and the
corresponding MBIMR bit is 0
[Clearing condition]
When all bits in RXPR are cleared to 0
0 RHI 1 R/(W)* Reset/Halt Interrupt Flag
Status flag indicating that the TinyCAN has been reset or
has entered halt mode.
[Setting condition]
When each processing has finished after a software reset
request (RSTRQ = 1) or a halt mode request (HLTRQ =
1)
[Clearing condition]
When 1 is written to this bit
Note: * Only 1 can be written to clear the flag.