[etherlab-dev] Ethernet driver on AT91SAM9G20 board.

Thomas Bitsky, Jr. tbj at automateddesign.com
Sun Apr 7 17:07:53 CEST 2013

I have a development board with the following Ethernet hardware.

The AT91SAM9G20 contains a MAC subsystem that is compliant with the ISO/TEC
802.3 topology for a single shared medium with several stations. The Media
Access Controller
(MAC) within the AT91SAM9G20 supports 1/10/100 Mbps transfer rates and
interfaces to
industry standard physical layer devices. The GESBC-9G20u is shipped with
the DM9161A
100Base-X / 10Base-T Transceiver device which, along with a RJ45 connector,
provides the
physical layer interface.

I would like to modify the native Ethernet driver to work with the Ethercat
Master, but this is new territory for me. I'm not sure which driver to
pick. For one thing, do I need to modify the driver for the DM9161A, or the
driver in the AT91SAM9G20?

Has anyone ever worked with these? Can someone point me in the right
direction towards finding the native driver Ethernet for this chip?

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