HI-3110
TRANSMIT ERROR COUNTER REGISTER: TEC
TEC7:0
(Write, SPI Op-code 0x26)
(Read, SPI Op-code 0xEC)
7
6
5
4
3
2
1
0
LSB
MSB
TheTEC register reflects the current value of the CANTransmit Error Counter. This register can be written by SPI command for test
purposes.
Bit Name
R/W Default Description
R/W 0x00 Transmit Error Counter bits <7:0>.
7-0 TEC7:0
0 £TEC £ 95: Error active status.
96£TEC £ 127: Error active status. Error warning flag, ERRW, set in STATF register. This
may be used to generate a hardware interrupt if ERRWIE bit is set in STATFE register.
128 £TEC£ 255: Error passive status. Transmit error passive flag, TXERRP, set in ERR
register. ERRPalso set in STATF register. This may be used to generate a hardware interrupt if
ERRPIE bit is set in STATFE register.
TEC > 255: Bus-off status. Bus-off flags, BUSOFF, set in ERR and STATF registers. The
latter may be used to generate a hardware interrupt if BUSOFFIE bit is set in STATFE register.
The HI-3110 will, after entering bus-off state, automatically recover to error active status
without host intervention if the BOR bit is set in control register CTRL0 and 128 x 11
consecutive recessive bits are detected on the bus. If the BOR bit is not set, bus-off recovery is
managed by the host.
RECEIVE ERROR COUNTER REGISTER: REC
REC7:0
(Write, SPI Op-code 0x24)
(Read, SPI Op-code 0xEA)
7
6
5
4
3
2
1
0
LSB
MSB
The REC register reflects the current value of the CAN Receive Error Counter. This register can be written by SPI command for test
purposes.
Bit Name
R/W Default Description
R/W 0x00 Receiver Error Counter bits <7:0>.
7-0 TEC7:0
0 £ REC £ 95: Error active status.
96 £ REC £ 127: Error active status. Error warning flag, ERRW, set in STATF register. This
may be used to generate a hardware interrupt if ERRWIE bit is set in STATFE register.
128 £ REC £ 255: Error passive status. Receive error passive flag, RXERRP, set in ERR
register. ERRPalso set in STATF register. This may be used to generate a hardware interrupt if
ERRPIE bit is set in STATFE register.
HOLT INTEGRATED CIRCUITS
21
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
