AR# 40670

描述

(UG366) states that when the TXMARGIN is 100, the pkpk differential voltage swing is 100-200mv for full swing.

However in the PIPE specification the corresponding value is 200-400mv.

Why is the user guide different from the PIPE specification?

解决方案

This value is vendor defined.

If you Set TXDIFFCTRL to 0010, it will result in a pkpk differential swing of 310 mV, which is inside the range of 200-400mv.