LFEQ is required to compensate for low-frequency loss because conventional equalizers cannot address gentle slopes of low-frequency loss. A 2 tap speculative DFE equalizer is proposed with a 2-bit comparator and 2 taps to address this issue. The document discusses low-frequency equalization, speculative decision feedback equalization, and a proposed 2 tap DFE approach.

1. LFEQ CTLE and speculative
DFE

2. • Why LFEQ is required ?
• Conventional equalizers cannot
compensate for the small amount of low-
frequency loss because the slope of the
low-frequency loss is too gentle
LFEQ

3. 2 tap speculative DFE, comparator 2^taps