Datasheet

Section 15 Controller Area Network for Tiny (TinyCAN)
Rev. 4.00 Mar. 15, 2006 Page 312 of 556
REJ09B0026-0400
15.3.14 TinyCAN Interrupt Registers 0, 1 (TCIRR0, TCIRR1)
TCIRR is a status flag for each interrupt source.
• TCIRR0
Bit Bit Name
Initial
Value R/W Description
7 OVLI 0 R/(W)* Overload Frame Transmit Interrupt Flag
Status flag indicating that the TinyCAN has transmitted
an overload frame.
[Setting condition]
When an overload frame is transmitted
[Clearing condition]
When 1 is written to this bit
6 BOFI 0 R/(W)* Bus Off Interrupt Flag
Status flag indicating the bus off state caused by the TEC
or recovery from the bus off state to the error-active state.
[Setting condition]
When TEC ≥ 256 or when 11 bits are received for 128
times in the bus off state
[Clearing condition]
When 1 is written to this bit
5 EPI 0 R/(W)* Error Passive Interrupt Flag
Status flag indicating the error-passive state caused by
REC or TEC.
[Setting condition]
When TEC ≥ 128 or REC ≥ 128
[Clearing condition]
When 1 is written to this bit
4 ROWI 0 R/(W)* Receive Overload Warning Interrupt Flag
Status flag indicating the error warning state caused by
REC.
[Setting condition]
When REC ≥ 96
[Clearing condition]
When 1 is written to this bit