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CHAPTER 19 FCAN CONTROLLER (V850/SC3)
User’s Manual U15109EJ3V0UD
625
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
R
Addresses: C1DINF: xx3FFC5CH
C2DINF: xx3FFC9CH
15
14
13
12
11
10
9
8
CnDINF
DINF15
DINF14
DINF13
DINF12
DINF11
DINF10
DINF9
DINF8
(n = 1, 2)
7
6
5
4
3
2
1
0
DINF7
DINF6
DINF5
DINF4
DINF3
DINF2
DINF1
DINF0
DINFa
CANn bus diagnostic information
DINF15 to DINF8
No. of bits starting from SOF
DINF7 to DINF0
Information from last 8 bits