3.2.1. Programmable Pre-Emphasis
Pre-emphasis increases the amplitude of the high-frequency component of the output signal. This increase compensates for the frequency-dependent attenuation along the transmission line.
The overshoot introduced by the extra current occurs only during change of state switching. This overshoot increases the output slew rate but does not ring, unlike the overshoot caused by signal reflection. The amount of pre-emphasis required depends on the attenuation of the high-frequency component along the transmission line.
|Assignment name||Programmable Pre-emphasis|
|Allowed values||0 (disabled), 1 (enabled). Default is 1.|