MiniPCIeCANFD
PCIe interface CAN (FD) card
©
2022
Guangzhou ZHIYUAN Electronics Co., Ltd.
7
User Manual
2.5 MiniPCIe Goldfinger Definition
Figure 2.1 MiniPCIe pin sequence
Table 2.3 lists the MiniPCIe interface definitions. The pins 17, 19, 37, 39 are the second function pins of CAN.
Table 2.3 MiniPCIe interface definition
Signal Name
Pin No.
Description
nWAKE
1
nWAKE signal/default pull-up
nRESET
22
nRESET signal/not used
TD0_REV
17
CAN0 TXD second function IO
RD0_REV
19
CAN0 RXD second function IO
TD1_REV
37
CAN1 TXD second function IO
RD1_REV
39
CAN1 RXD second function IO
REFCLK_N/P
11, 13
PCIE reference clock pair
PCIE_TX_N/P
23, 25
PCIE send pair
PCIE_RX_N/P
31, 33
PCIE receiving pair
3.3V
2
,
24
,
52
Power supply
GND
9
,
15
,
18
,
21
,
26
,
27
,
29
,
34
,
35
,
40
,
50
Ground
2.6 Signal Indicators
The MiniPCIeCANFD interface card has one system operation indicator, one dual-color CAN0 indicator, and
one dual-color CAN1 indicator to indicate the device operating status. Table 2.1 lists the functions of the indicators.
When the indicators are in various states, the status of the CAN bus is shown in Table 2.2.
Table 2.4 Indicator functions
Indicator
Status
Indication Status
R
（
RUN
）
Green
System operation instructions
CAN0
Green
The CAN interface is working properly
Red
The CAN interface is faulty
CAN1
Green
The CAN interface is working properly
Red
The CAN interface is faulty
After the MiniPCIeCANFD interface card is powered on, the system status indicator RUN is green, indicating
that the device is powered on, and the system is operating properly; if the system status indicator RUN is off, the
system power supply fails or a serious error occurs in the system.
When the CAN0 and CAN1 indicators are green, the CAN controller has been initialized and is working
properly.
When the CAN controller has an error, the CAN0 and CAN1 indicators are red; when the error of the CAN
controller is cleared, the CAN0 and CAN1 indicators are green.
