Cann Bus Diagnostic Information Register (Cndinf) - NEC Renesas V850/SC1 User Manual

19.5.26 CANn bus diagnostic information register (CnDINF)

The CnDINF register indicates all the CAN bus bits, including the stuff bits and delimiters. This information is used
only for diagnostic purposes.
This register is read-only in 16-bit units.
The C2DINF register is valid only in models µ PD703089Y and 70F3089Y.
Cautions 1. The CnDINF register can be accessed only while in diagnostic processing mode (CnDEF
register's MOM bit = 1) and in normal operating mode (CnCTRL register's INIT bit = 0).
2. Storage of the last 8 bits is automatically stopped if an error or a valid message (ACK
delimiter) is detected on the CAN bus. Storage is automatically reset each time when SOF is
detected on the CAN bus.
After reset: 0000H
15
CnDINF DINF15
(n = 1, 2) 7
DINF7
DINF15 to DINF8
DINF7 to DINF0
CHAPTER 19 FCAN CONTROLLER (V850/SC3)
R Addresses: C1DINF: xx3FFC5CH
14 13
DINF14 DINF13 DINF12
6 5
DINF6 DINF5
DINFa
No. of bits starting from SOF
Information from last 8 bits
User's Manual U15109EJ3V0UD
C2DINF: xx3FFC9CH
12 11 10
DINF11 DINF10
4 3 2
DINF4 DINF3 DINF2
CANn bus diagnostic information
9 8
DINF9 DINF8
1 0
DINF1 DINF0
625