upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 600

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

(7)
Remarks: 1. The contents of the CnLEC register are not cleared when the CAN module changes
600
CnLEC
CAN module last error information register (CnLEC)
The CnLEC register provides the error information of the CAN protocol.
LEC2
0
0
0
0
1
1
1
1
Figure 16-29: CAN Module Last Error Information Register (CnLEC) Format
2. If an attempt is made to write a value other than 00H to the CnLEC register by software,
LEC1
from an operation mode to the initialization mode.
the access is ignored.
7
0
0
0
1
1
0
0
1
1
6
0
LEC0
0
1
0
1
0
1
0
1
5
0
No error
Stuff error
Form error
ACK error
Bit error. (The CAN module tried to transmit a recessive-level bit as part of
a transmit message (except the arbitration field), but the value on the CAN
bus is a dominant-level bit.)
Bit error. (The CAN module tried to transmit a dominant-level bit as part of
a transmit message, ACK bit, error frame, or overload frame, but the value
on the CAN bus is a recessive-level bit.)
CRC error
undefined
Chapter 16 FCAN Controller
User’s Manual U16702EE3V2UD00
4
0
3
0
Last CAN protocol error information
LEC2
2
LEC1
1
LEC0
0
see Table
Address R/W After reset
16-16
R/W
00H