CANFDNET-400U
High-performance Four-channel CANFD Bus to Ethernet Converter User Manual
©2021 Guangzhou ZLG Electronics Co., Ltd.
8
User Manual
4.5 CANFD-bus Interfaces
The device provides four isolated CANFD-Bus interfaces. The shell identification is "CAN0", "CAN1", "CAN2",
and "CAN3". The physical form of the interface is a DB9 terminal. Table 4.6, Table 4.7 and Table 4.8 list the
interface diagram, signal definition, and interface specifications.
Table 4.6 Pin definitions
Type
Schematic Diagram
Pin definitions
Table 4.7 Signal definition
Function Interface
Signal Definition
Signal Description
Pin Number
CANFD0~CANFD3
CANFD_L
CANFD data transceiver differential inverted signal
2
CANFD_GND
CANFD isolation ground
3, 6
CANFD_H
CANFD data transceiver differential positive phase signal
7
CANFD_FG
Shielding ground
5
NC
Not connected
1, 4, 8, 9
Table 4.8 CANFD-Bus interface specifications
Parameter
Minimum
Typical Value
Maximum
Unit
Communication baud rate
5k
1M
bps
Number of nodes
110
pcs
Dominant level (logic 0)
CANFDH
2.75
3.5
4.5
V
CANFDL
0.5
1.5
2
Recessive level (logic 1)
CANFDH
2
2.5
3
CANFDL
2
2.5
3
Differential level
Dominant (logic 0)
1.2
2
3.1
Recessive (logic 1)
-0.5
0
0.05
Maximum withstand voltage of the bus pin
-18
18
Instantaneous voltage of the bus
-100
+100
Isolation voltage (DC)
3500
V
Figure 4.2 Typical high-speed CANFD network connection
