SPEED=S1000, LOOPBACK=Disable, DUPLEX=Half_Duplex
EMAC Basic Control Register0
| DUPLEX | EMAC Transfer Mode 0 (Half_Duplex): undefined 1 (Full_Duplex): undefined |
| LOOPBACK | EMAC Loopback Mode For Test 0 (Disable): undefined 1 (Enable): undefined |
| SPEED | EMAC Working Speed 0 (S1000): undefined 1 (Reserved): undefined 2 (S10): undefined 3 (S100): undefined |