L- and H-Tile Transceiver PHY User Guide

ID 683621
Date 7/20/2022
Public
Document Table of Contents

A.4.1.1. Pre-emphasis

Boost high frequency component by de-emphasizing low frequency components to compensate the low-pass characteristics of the physical medium.
Pre-emphasis 1st post-tap magnitude

0x105[4:0]

read-write pre_emp_switching_ctrl_1st_post_tap

Sets 1st post-tap magnitude. Direct mapped until 24.

5'b00000: 0

(until)

5'b11000: 24

Pre-emphasis 1st post-tap polarity

0x105[6]

read-write pre_emp_sign_1st_post_tap

Set 1st post-tap polarity.

1'b1: Negative Polarity

1'b0: Positive Polarity

Pre-emphasis 1st pre-tap magnitude

0x107[4:0]

read-write pre_emp_switching_ctrl_pre_tap_1t

Sets 1st pre-tap magnitude. Direct mapped until 15.

5'b00000: 0

(until)

5'b01111: 15

Pre-emphasis 1st pre-tap polarity

0x107[5]

read-write pre_emp_sign_pre_tap_1t

Set 1st pre-tap polarity.

1'b1: Negative Polarity

1'b0: Positive Polarity

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