Intel® Arria® 10 Transceiver PHY User Guide

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ID 683617
Date 3/28/2022
Public
Document Table of Contents

2.7.11. Preset Mappings to TX De-emphasis

Table 195.  Arria 10 Preset Mappings to TX De-emphasis
Preset C+1 C0 C-1
0 001111 101101 000000
1 001010 110010 000000
2 001100 110000 000000
3 001000 110100 000000
4 000000 111100 000000
5 000000 110110 000110
6 000000 110100 001000
7 001100 101010 000110
8 001000 101100 001000
9 000000 110010 001010
10 010110 100110 000000

The pipe_g3_txdeemph port is used to select the link partner’s transmitter de-emphasis during equalization. The 18 bits specify the following coefficients:

[5:0]: C-1

[11:6]: C0

[17:12]: C+1

Note: Intel® recommends transmitting Preset P8 coefficients for Arria® 10 receiver to recover data successfully.

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