Reset is activated upon power-up, when RESET_N is
pulled LOW (for the minimum reset pulse time) or if hardware reset is initiated by setting
bit[15] in the register[0x001F].
Digital state machine restarts after reset and all the register settings are cleared
to the boot-up state.
25MHz clock on clkout pin will remain active during reset state also.
MDI/PMA will not have termination during reset state.
Note: Straps are re-latched only
with pin reset and not by hardware reset through register (register [0x001F] =
x8000.