Kontron SMARC Evaluation Carrier - Manual (Page 17)

User’s Guide
17 www.kontron.com
5 Connectors – Cabled Interfaces
Wired connections to the SMARC Evaluation Carrier are described in this section. Information on mating connector
part numbers is given in a table in Section 27 Appendix A: Connector Mating Part Number Information.
5.1 USB Connectors
5.1.1 J1 – USB Hub Connections
Connector J1 implements an industry standard USB dual Type A host connection. The USB ports for J1 are ports that are
downstream ports of the Evaluation Carrier’s SMSC USB2517 hub. The hub upstream port is connected to the SMARC
Module USB1 port.
5.1.2 J2 – USB OTG Module Connection
Connector J2 implements an industry standard USB micro-AB connector. This small form factor flavor of USB
connection is allowed to be either a client or a host, or can switch between being client or host. If the Module supports
it, the J2 port may be USB OTG (On The Go) capable.
J2 is wired to the SMARC USB0 port, and the details of whether the port is client, host, or OTG capable depend on
Module capabilities and how the Module is configured.
5.1.3 J3 – J4 – USB Module Connection
J3 is an industry standard USB single Type A host connection. It is wired directly to the SMARC USB2 port.
There is a hole pattern at this connector site that allows a dual USB Type A host connector, J4, to be loaded instead of
J3. If this is done, then the SMSC USB2517 USB Hub controller is not used, and the SMARC USB1 port is configured
(via build options) to go to the upper connector slot in the J4 pattern. This is not the usual build, and exists only for
certain special Module validation purposes.
5.2 Gigabit Ethernet
5.2.1 J5 - GBE RJ45
J5 is an industry standard 8 pin RJ45 jack for use with 4-pair CAT5 cabling common for Gigabit Ethernet connections.
The specific part used is the Bel-Fuse L829-1J1T-43 (Kontron SAP 1045-4258) or equivalent.