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2.2 1000M Ethernet Interface
As Freescale i.MX6Q has integrated Gigabit Ethernet MAC internally, you just need to connect the PHY chip externally when
using. This platform's Ethernet transceiver uses RTL8211E as Ethernet chip. Currently, it works in Gigabit mode, the card
crystal is 25M. Mode can be configured through the resistor R87~R95 (please refer to the Base Board Diagram and RTL8211
Chip Manual for detailed configuration). The development board is configured as Gigabit full-duplex mode by default.
The RTL8211E/RTL8211EG is Realtek's newest network PHY chip, supporting 10Base-T/100Base-TX/1000Base-T, IEEE
802.3 standards. The interface of the main chip MAC is RGMII, which supports Crossover, Detection, Auto-Correction,
polarity correction, adaptive equalization, cross-talk, cancellation, echo cancellation and other functions. The platform uses
RTL8211E as the network card, it is because RTL8211EG's package is QFN64, RTL8211E's package is QFN48, but the price is
so different between the two, RTL8211E is cheaper, while RTL8211EG is a little expensive, the main difference is RTL8211EG
supports GMII/MII interface, RTL8211E doesn't. So if you are consider more about the cost control, it is suggested to chose
RTL8211E, RTL8211EG's price is more expensive than RTL8211E by 60~70%.Specially,need to use GMII/MII interface,
please use RTL8211EG.
Shenzhen Waveshare Electronics Co., Ltd.
www.waveshare.com
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