Interfaces and Connectors
EBX-41 Reference Manual
34
USB
The VL-EBX-41 includes ten USB 2.0 ports and two USB 3.0 ports. There are eight USB ports
with standard USB Type A connectors, located on the baseboard and paddleboard. The eUSB,
SUMIT, PCIe/104, and PCIe Mini Card/mSATA connectors all provide USB ports, as shown in
the USB Port Map table below. These connectors are protected against ESD damage.
The USB interface on the Copperhead is UHCI (Universal Host Controller Interface) and EHCI
(Enhance Host Controller Interface) compatible, which provides a common industry
software/hardware interface.
Table 14: USB Port Map
USB Port Device
0
On-board Type A Connector
1
On-board Type A Connector
2
On-board USB3 Type A Connector
3
On-board USB3 Type A Connector
4
CRB-5013 paddle board Type A Connector
5
CRB-5013 paddle board Type A Connector
6
CRB-5013 paddle board Type A Connector
7
CRB-5013 paddle board Type A Connector
8
SUMIT
9
SUMIT
10
SUMIT / PCIe/104
11
SUMIT / PCIe/104
12
eUSB Module
13
PCIe Mini Card / mSATA
Serial Ports
The Copperhead features four on-board 16550-based serial communications channels located at
standard PC I/O addresses. All serial ports can be operated in RS-232 4-wire or RS-422 mode.
IRQ lines are chosen in BIOS setup. Each COM port can be independently enabled, disabled, or
assigned a different I/O base address in BIOS setup.
COM
P
ORT
C
ONFIGURATION
Use the BIOS setup screens to select between RS-232 and RS-422 operating modes.
Jumper block V2 is used to configure serial ports for RS-422 operation. See “Jumper Summary”
for details. The 120-ohm termination resistor should be enabled for RS-422 endpoint stations. It
should be disabled for RS-232 intermediate stations.
