Texas Instruments TMS320DM6446 DVEVM v2.0 - Manual (Page 18)

Setting Up the Hardware
2-4
7) Connect the microphone to the EVM.
8) Connect the power cable to the EVM power jack on the board. To be
ESD safe, do not plug in the other end of the cable yet.
9) If you will use the Ethernet connection, connect the Ethernet cable to
the Ethernet Port on the EVM and to an Ethernet network port.
Note that the U-Boot bootargs must include "ip=dhcp" to enable the
network connection.