Patent ID: 6975674

Claim:
For use in a transceiver capable of operating in a high frequency Ethernet local area network (LAN), a mixed mode equalization system comprising: an adaptive analog equalization filter capable of receiving an incoming analog signal and amplifying a first high frequency component of said incoming analog signal by a first adjustable gain factor to thereby produce an analog filtered incoming signal, wherein an echo of an outgoing analog signal in the incoming analog signal has been reduced before the incoming analog signal is received by the adaptive analog equalization filter; an analog-to-digital converter (ADC) capable of converting said analog filtered incoming signal to a incoming digital signal; a digital finite impulse response (FIR) filter capable of receiving said incoming digital signal and amplifying a second high frequency component of said incoming digital signal to thereby produce a digital filtered incoming signal; a digital FIR controller capable of modifying at least one digital filter coefficient of said digital FIR filter according to a signal error associated with a digital output of said digital FIR filter; and an analog equalization controller capable of modifying said first adjustable gain factor associated with said adaptive analog equalization filter according to a value of said at least one digital filter coefficient.