8 (16)
6
Connections
6.1
Overview
Fig. 2
Connections (XMC)
1
CAN 2
2
CAN 1
3
Fieldbus expansion connector channel 1 (option)
4
Fieldbus expansion connector channel 2
5
PCIe connector (XMC), PCI connector (PMC)
6.2
CAN Bus
The bus coupling can optionally be galvanically isolated. With galvanic isolation the shield of the
CAN connector is connected to CAN ground through a 1 MΩ resistor and a 10 nF capacitor. The
shields of the CAN connectors are connected directly together.
For a not galvanically isolated interface, the CAN ground and PC ground are at the same potential.
For best noise immunity use shielded CAN cables.
Pin Allocation D-Sub-9 Connector
Pin no.
Signal
Additional signals using a fieldbus expansion
1
—
CAN low (low-speed)
2
CAN low (high-speed/CAN FD)
—
3
CAN GND
—
4
—
CAN high (low-speed)
5
—
—
6
—
—
7
CAN high (high-speed/CAN FD)
—
8
—
LIN
9
—
VBAT
LIN
(8-18 V DC)
3
1
4
5
2
PC CAN Interface User Manual
4.01.0310.20000 1.2 en-US
