58
OSD3358-SM-RED
– User Guide
Rev. 1.0 9/19/2017
Octavo Systems LLC
Copyright 2017
4.15
Ethernet
Figure 55: OSD3358-SM-RED ethernet circuit
The OSD3358-SM-RED Platform is capable of Gigabit ethernet with the AR8035 Gigabit
Ethernet PHY connected to OSD335x-SM via RGMII1 port. The PHY interface with the
processor consists of 4 data lines for transmission and reception along with clock and control
lines for each. MDIO interface is used by the processor for instruction/configuration of the PHY.
A 25MHz crystal oscillator Y6 supplies clock to the PHY. X5 contains an ethernet connector with
integrated magnetics with 2 LEDs indicating mode of operation.
More information on ethernet interface can be found at the following resources:
1. AR8035-AL1A Datasheet
https://media.digikey.com/pdf/Data%20Sheets/CSR%20PDFs/AR8035_DS_(Atheros)_
