Patent ID: 7737747

Claim:
In a transmitter pad system using a transmitter voltage source and interacting with a serial interface of the type using a voltage/current mode driver wherein a line-impedance exists across the transmitter voltage source, a method for controlling transmitter rise-fall transitions to selectively speed up or slow down said transitions, comprising: using at least one pre-charged capacitor connected through resistor-like elements and switches across said line-impedance to cooperate with said transmitter pad system to selectively speed up or slow down said transmitter rise-fall transitions, wherein there are two transmitter pads, wherein said pre-charged capacitor includes first and second PMOS capacitors connected in parallel with controllable switches and configured such that when said first PMOS capacitor is connected for one of said rise-fall transitions, the second PMOS capacitor is connected between a suitable voltage supply and ground for getting pre-charged, and vice versa.