ASIX ELECTRONICS CORPORATION

12

AX88178 L

USB to 10/100/1000 Gigabit Ethernet/HomePNA Controller

4.1.8

Power-Up Steps

After power-on reset, the ASIC will automatically perform following steps to the Ethernet Phys via MDC/MDIO lines,

1. Write to Phy_ID of 00h with Phy register offset 00h to power down all Phys attached to station management

interface.

2. Write to Primary Phy_ID with Phy register offset 00h to power down Primary Phy.

3. Write to Secondary Phy_ID with Phy register offset 00h to power down Secondary Phy.