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MiniPCIeCANFD
PCIe interface CAN (FD) card
2.5 MiniPCIe Goldfinger Definition
Table 2.3 lists the MiniPCIe interface definitions. The pins 17, 19, 37, 39 are the second function pins of CAN.
Signal Name
nWAKE
nRESET
TD0_REV
RD0_REV
TD1_REV
RD1_REV
REFCLK_N/P
PCIE_TX_N/P
PCIE_RX_N/P
3.3V
GND
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.
Indicator
R（RUN）
CAN0
CAN1
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.
Figure 2.1 MiniPCIe pin sequence
Table 2.3 MiniPCIe interface definition
Pin No.
1
22
17
19
37
39
11, 13
23, 25
31, 33
2, 24, 52
9, 15, 18, 21, 26, 27, 29, 34, 35, 40, 50
Table 2.4 Indicator functions
Status
Green
Green
Red
Green
Red
System operation instructions
The CAN interface is working properly
The CAN interface is faulty
The CAN interface is working properly
The CAN interface is faulty
2022
©
Guangzhou ZHIYUAN Electronics Co., Ltd.
7
Description
nWAKE signal/default pull-up
nRESET signal/not used
CAN0 TXD second function IO
CAN0 RXD second function IO
CAN1 TXD second function IO
CAN1 RXD second function IO
PCIE reference clock pair
PCIE send pair
PCIE receiving pair
Power supply
Ground
Indication Status
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