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3.3 Connector description
3.3.1
10/100 Ethernet connector
10/100 Ethernet Port
Pin
Signal
Pin
1
ETH_Tx+
2
ETH_Tx-
3
ETH_Rx+
4
---
recommended for noise reduction and EMC compatibility issues, especially when the length of the cable is significant.
On the connector there are also two LEDs. Left LED is Yellow and shows 10/100 connection. The right LED blinks Green to show ACTIVITY presence.
ETH_Tx+/
-: Ethernet Transmit differential pair.
ETH_Tx
ETH_Rx+/
-: Ethernet Receive differential pair.
ETH_Rx
SBC-D23
SBC-D23 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by P.Z. - Copyright © 2021 SECO S.p.A.
On board, there is a FastEthernet interface, made available by a Micrel
CN5
KSZ8091RBA 10Baset-T/100Base-Tx Transceiver interfaced to PX30
RMII interface.
Signal
The connector is type TRXCOM p/n TRJ19401BGNL or equivalent, with
5
---
2kV decoupling capacitor.
6
ETH_Rx-
This interface is compatible only with Fast Ethernet (10/100Mbps) Networks. When connected
7
---
to Gigabit Ethernet Networks, the speed will be limited to 100Mbps.
8
---
For the connection, cables category Cat5e or better are required. Cables category Cat6 are
25
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