CHAPTER 11 FCAN CONTROLLER
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User’s Manual U14492EJ3V0UD
(27) CAN1 bus diagnostic information register (C1DINF)
The C1DINF register indicates all CAN bus bits, including stuff bits, delimiters, etc. This information is used
only for diagnostic purposes.
Because the number of bits starting from SOF is added at each frame, the actual number of bits is the value
obtained by subtracting the previous data.
This register is read-only in 16-bit units.
Cautions 1. While in diagnostic processing mode (C1DEF register’s MOM bit = 1) and in normal
operation mode (C1CTRL register’s INIT bit = 0), the C1DINF register can only be
accessed. In normal operation mode (C1DEF register’s MOM bit = 0), this register
cannot be accessed.
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. Reset is automatically performed each time when
the SOF is detected on the CAN bus.
14
DINF14
13
DINF13
12
DINF12
2
DINF2
3
DINF3
4
DINF4
5
DINF5
6
DINF6
7
DINF7
8
DINF8
9
DINF9
10
DINF10
11
DINF11
15
DINF15
1
DINF1
0
DINF0
C1DINF
Address
xxxxmC5CH
Note
Initial value
0000H
Note
xxxx: CAN message buffer registers can be allocated to the xxxx addresses as programmable
peripheral I/O registers. Note, however, that the xxxx addresses cannot be changed after being
set.
m = 2, 6, A, E
Bit Position
Bit Name
Function
Indicates CAN bus diagnostic information.
Bit Name
CAN Bus Diagnostic Information
DINF15 to DINF8
Number of bits starting from SOF
DINF7 to DINF0
Information from last 8 bits
15 to 0
DINF15 to
DINF0
Содержание V850E/IA1 mPD703116
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