Analog Core Revision
The Analog Core revision is a component of the PHY Versioning register (0x3E0)
Enable / Disable the Analog Core
A / B / G / LP PHYs
To enable the Analog Core, write 0 to Core Register 0x3E6
To disable the Analog Core, write 0xF4 to Core Register 0x3E6
N PHYs
To enable the Analog Core, write 0 to PHY Register 0xA5
To disable the Analog Core, write 0x7FFF to PHY Register 0xA5