Receive/Transmit Error Counter (Rtec) - Fujitsu MB90895 Series Hardware Manual

16.3.4

Receive/Transmit Error Counter (RTEC)

The receive/transmit error counter (RTEC) indicates the number of times an error
occurs at transmitting and receiving the message.It counts up when transmit or receive
errors occurs and counts down when transmitting and receiving are performed
normally.
I Receive/Transmit Error Counter (RTEC)
R : Read only
Table 16.3-5 Functions of Receive/Transmit Error Counter (RTEC)
bit0
to
bit7
bit8
to
bit15
Figure 16.3-7 Receive/transmit error counter
bit 15 14 13
TEC7 TEC6 TEC5
R R R
7 6 5
REC7 REC6 REC5 REC4
R R R
bit name
REC7 to 0: Reception error counter value = 96 or more:
Receive error counter The node status changes to warning (CSR: NS1, NS0 = "01
bits
Reception error counter value = 128 or more:
The node status changes to error passive (CSR: NS1, NS0 =
"10
Reception error counter value = 256 or more:
Stops incrementing.The node status remains with error passive
(CSR: NS1, NS0="10
TEC7 to 0: Transmit error counter value = 96:
Transmit error counter Node status transits to warning (CSR: NS1, NS0 = 01
bits
Transmit error counter value = 128:
Node status transits to error passive (CSR: NS1, NS0 = 10
Transmit error counter value = 256:
Stops counting up. The node status transits to bus off (CSR:
NS1, NS0 = 11
12 11 10 9
TEC4 TEC3 TEC2 TEC1
R R R R
4 3 2 1
REC3 REC2 REC1
R R R R
Function
").
B
").
B
).
B
CHAPTER 16 CAN controller
8 Reset value
TEC0
0 0 0 0 0 0 0 0
B
R
0
Reset value
REC0
0 0 0 0 0 0 0 0
B
R
").
B
)
B
)
B
493