13.2 CAN Module Related Registers
CAN MODULE
13
13-36
32192/32195/32196 Group Hardware Manual
Rev.1.10 REJ09B0123-0110 Apr.06.07
13.2.6 CAN Error Count Registers
CAN0 Receive Error Count Register (CAN0REC)
<Address: H’0080 100A>
CAN1 Receive Error Count Register (CAN1REC)
<Address: H’0080 140A>
123456
b7
b0
REC
00000000
<Upon exiting reset: H’00>
b
Bit Name
Function
R
W
0–7
REC
Receive error count value
R
–
During an error active/error passive state, a receive error count value is stored in this register.
The count is decremented when frames are received normally or incremented when an error occurred. If the
CAN module finished receiving normally when REC
≥ 128 (error passive), REC is set to 127. During a bus off
state, an undefined value is stored in this register. The count is reset to H’00 upon returning to an error active
state.
CAN0 Transmit Error Count Register (CAN0TEC)
<Address: H’0080 100B>
CAN1 Transmit Error Count Register (CAN1TEC)
<Address: H’0080 140B>
9
10
11
12
13
14
b15
b8
TEC
00000000
<Upon exiting reset: H’00>
b
Bit Name
Function
R
W
8–15
TEC
Transmit error count value
R
–
During an error active/error passive state, a transmit error count value is stored in this register.
The count is decremented when frames are transmitted normally or incremented when an error occurred.
During a bus off state, an undefined value is stored in this register. The count is reset to H’00 upon returning to
an error active state.