MiniPCIeCANFD
PCIe interface CAN (FD) card
©
2022
Guangzhou ZHIYUAN Electronics Co., Ltd.
6
User Manual
Figure 2.1 Terminal resistance selection switch
2.4 CAN Second Function Pin Switch
When designing the CAN transceiver circuit or improving the protection level of the CAN signal cable,
consider connecting the second function pin of the CAN signal to the backplane through the MiniPCIe reserved
pin. Design the CAN transceiver circuit by yourself to improve the system flexibility.
The second function pin of the CAN signal is switched through the jumper JP1 (as shown in Figure 2.2). JP1
is disconnected by default, and the system uses the default on-board CAN transceiver. When JP1 is
short-circuited with solder, the second function pin of CAN signal is automatically enabled when the system is
powered on. Table 2.3 lists the pin definitions.
Figure 2.2 CAN-TTL switch jumper
