User's Manual

TREK-572/303 User Manual 16
4.1 Setting Jumpers and Switches
It is possible to configure the In-Vehicle Computing Box to match the needs of the
application by resetting the jumpers. A jumper is the simplest kind of electrical switch.
It consists of two metal pins and a small metal clip, often protected by a plastic cover
that slides over the pins to connect them. To “close” a jumper, connect the pins with
the clip. To “open” a jumper, remove the clip. Sometimes a jumper has three pins,
labeled 1, 2, and 3. In this case, connect either pins 1 and 2, or pins 2 and 3.
SW2: WWAN Voltage Setting
Description For MC7354/MC8090/MC8092
Setting Function
(2) MC8090/MC8092(3.5V)
(1-2) (3.3V)
(2-3) MC7354(3.8V)
CN7: 10/100/1000 LAN
Pin Signal Pin Signal
1 LAN_MDI0+ 2 LAN_MDI0-
3 LAN_MDI1+ 4 LAN_MDI1-
5 LAN_MDI2+ 6 LAN_MDI2-
7 LAN_MDI3+ 8 LAN_MDI3-
CN8: USB2.0
Pin Signal Pin Signal
1 +V5 (0.5A) 2 USB DATA -
3USB DATA+ 4 GND