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MB90420/5 (A) SERIES F
23.6.4 Receive and Transmit Error Counters (RTEC)
The receive and transmit error counters indicate the counts for transmission errors and reception errors
defined in the CAN specifications. These registers can only be read.
n Receive and transmit error counters (RTEC)
Address: 003C05
(CAN0)
H
Address: 003D05
(CAN1)
H
Read/write →
Initial value →
Address: 003C04
(CAN0)
H
Address: 003D04
(CAN1)
H
Read/write →
Initial value →
[bits 15 to 8] TEC7 to TEC0: Transmit error counter
These are transmit error counters.
TEC7 to TEC0 values indicate 0 to 7 when the counter value is more than 256, and the subsequent
increment is not counted for counter value. In this case, Error Passive is indicated for the node status
(NS1 and NS0 of control status register CSR = 11).
[bits 7 to 0] REC7 to REC0: Receive error counter
These are receive error counters.
REC7 to REC0 values indicate 0 to 7 when the counter value is more than 256, and the subsequent
increment is not counted for counter value. In this case, bus off is indicated for the node status (NS1 and
NS0 of control status register CSR = 10).
2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
15
14
13
TEC7
TEC6
TEC5
(R)
(R)
(R)
(0)
(0)
(0)
7
6
5
REC7
REC6
REC5
(R)
(R)
(R)
(0)
(0)
(0)
23-16
12
11
10
TEC4
TEC3
TEC2
(R)
(R)
(R)
(0)
(0)
(0)
4
3
2
REC4
REC3
REC2
(R)
(R)
(R)
(0)
(0)
(0)
← Bit No.
9
8
TEC1
TEC0
(R)
(R)
(0)
(0)
← Bit No.
1
0
REC1
REC0
(R)
(R)
(0)
(0)
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