Seco SBC-A62-J User Manual page 26

Single board computer with nxp i.mx6 processor

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Table Of Contents

Table of Contents

3.3.5

Ethernet connector

Gigabit Ethernet Port - CN23

Signal

GBE0_MDI0+

GBE0_MDI0-

GBE0_MDI1+

GBE0_MDI2+

limitation of i.MX6 Gb Ethernet MAC (ENET), which is limited only to 470Mbps (also check NXP Errata ERR004512 for i.MX6 processors).

Please be aware that they will work in Gigabit mode only in case that they are connected to Gigabit Ethernet switches/hubs/routers. For the connection, cables

category Cat5e or better are required. Cables category Cat6 are recommended for noise reduction and EMC compatibility issues, especially when the length of

the cable is significant.

GBE0_MDI0+/GBE0_MDI0-: Ethernet Controller Media Dependent Interface (MDI) I/O differential pair #0. It is the first differential pair in Gigabit Ethernet mode, and

the Transmit differential pair in 10/100 Mbps modes.

GBE0_MDI1+/GBE0_MDI1-: Ethernet Controller Media Dependent Interface (MDI) I/O differential pair #1. It is the second differential pair in Gigabit Ethernet mode,

and the Receive differential pair in 10/100 Mbps modes.

GBE0_MDI2+/GBE0_MDI2-: Ethernet Controller Media Dependent Interface (MDI) I/O differential pair #2. It is the third differential pair in Gigabit Ethernet mode; it is

not used in 10/100Mbps modes.

GBE0_MDI3+/GBE0_MDI3-: Ethernet Controller Media Dependent Interface (MDI) I/O differential pair #3. It is the fourth differential pair in Gigabit Ethernet mode; it

is not used in 10/100Mbps modes.

SBC-A62-J

On board, there is one Gigabit Ethernet connector, made available by

a Micrel KSZ9031RN Gigabit Ethernet Transceiver interfaced to NXP

processor's RGMII interface.

Signal

Connector is type TRXCOM p/n TRJG16314CNL or equivalent, with

GBE0_MDI2-

2kV decoupling capacitor, 100 Ohm impedance.

GBE0_MDI1-

This interface is compatible both with Gigabit Ethernet (1000Mbps) and with Fast Ethernet

GBE0_MDI3+