UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 582

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

580
(9) CAN module error counter register (C0ERC)
After reset: 0000H
The C0ERC register indicates the count value of the transmission/reception error counter.
Remark REC6 to REC0 of the reception error counter are invalid in the reception error passive
Remark TEC7 to TEC0 of the transmission error counter are invalid in the bus-off state (BOFF
REPS
REC6-REC0
C0ERC
0
1
TEC7-TEC0
0-127
0-255
state (RECS [1:0] = 11B).
= 1).
Reception error counter is not error passive (<128)
Reception error counter is error passive range ( 128)
REPS
TEC7
15
7
Number of reception errors. These bits reflect the status of the reception error counter.
The number of errors is defined by the CAN protocol.
Number of transmission errors. These bits reflect the status of the transmission error
counter. The number of errors is defined by the CAN protocol.
R
REC6
TEC6
14
6
Preliminary User’s Manual U19748EJ1V0UD
CHAPTER 15 CAN CONTROLLER
Address: FF94H, FF95H
REC5
TEC5
13
5
Reception error passive status bit
REC4
TEC4
Transmission Error Counter Bit
12
4
Reception Error Counter Bit
REC3
TEC3
11
3
REC2
TEC2
10
2
REC1
TEC1
9
1
REC0
TEC0
8
0