Ethernet

The WPCM450 contains two instances of Winbond's own Ethernet MAC controller (EMC). It has also been used in other Winbond/Nuvoton SoCs.

Instance	MMIO	[RX IRQ]	[TX IRQ]	reset	clock enable
1	0xb0002000	15	16	6	6
2	0xb0003000	17	18	7	7

Although the register layout and theory of operation appears to the the same for EMC instances in different SoCs (W90N745, WPCM450, NPCM750), there are differences in SoC integration (reset lines, interrupt lines, clocks, MMIO addresses).

References

• drivers: AMI (header with register definitions), OpenBMC
• Winbond W90N745 datasheet