F-Tile Triple-Speed Ethernet IP User Guide

ID 741328
Date 9/29/2025
Public
Document Table of Contents

4.7. Analog Parameters

Table 17.  FGT TX Equalization (EQ) Analog Parameter Options
Parameter Values Description
FGT TXEQ Post Tap 1, 1.0 step size 0 to 19 Options for FGT TX EQ Post Tap 1, in 1.0 step size increments. Default value is 0.
FGT TXEQ Main Tap, 1.0 step size 0 to 55 Options for FGT TX EQ Main Tap, in 1.0 step size increments. Default value is 35.
FGT TXEQ Pre Tap 1, 1.0 step size 0 to 15 Options for FGT TX EQ Pre Tap 1, in 1.0 step size increments. Default value is 5.
FGT TXEQ Pre Tap 2, 1.0 step size 0 to 7

Options for FGT TX EQ Pre Tap 2, in 1.0 step size increments. Default value is 0.

Table 18.  FGT RX Analog Parameter Options
Parameter Values Description
Select FGT RX Onchip Termination RX_ONCHIP_TERMINATION_R_1(85 Ohms)

RX_ONCHIP_TERMINATION_R_2(100 ohms)

Selects FGT RX termination resistor setting. Default value is RX_ONCHIP_TERMINATION_R_1(85 Ohms).
Enable FGT RX On-board AC Couple DISABLE

ENABLE

Enable RX external AC coupling setting. Default value is ENABLE.
Enable FGT VSR mode VSR_MODE_LOW_LOSS

VSR_MODE_HIGH_LOSS

VSR_MODE_DISABLE

Enable VSR mode setting. Default value is VSR_MODE_DISABLE.
RXEQ VGA Gain 0 to 63 Options for RX EQ VGA gain value, in 1.0 step size increments. Default value is 0.
Note: This parameter is only available when the Adaptation mode is set to manual in RX Datapath Options.
RXEQ High Frequency Boost 0 to 63 Options for RX EQ high frequency boost value, in 1.0 step size increments. Default value is 0.
Note: This parameter is only available when the Adaptation mode is set to manual in RX Datapath Options.
RXEQ DFE Data Tap1 0 to 63 Options for RX EQ DFE data tap1 value, in 1.0 step size increments. Default value is 0.
Note: This parameter is only available when the Adaptation mode is set to manual in RX Datapath Options.

For more information, refer to Analog Parameter Options from F-Tile Architecture and PMA and FEC Direct PHY IP User Guide.