F-Tile Architecture and PMA and FEC Direct PHY IP User Guide

ID 683872
Date 11/04/2024
Public
Document Table of Contents

3.3.3.1. RX FGT PMA Interface Options

Figue 68. RX FGT PMA Iteface Optios i Paamete Edito
Table 36.   RX FGT PMA Iteface Paametes
Paamete Values Desciptio
RX FGT PMA Paametes
RX PMA iteface FIFO mode

Registe

Elastic

Selects the RX PMA Iteface FIFO mode. Default value is Elastic.
Eable x_pmaif_fifo_empty pot O/Off Eables the pot that idicates the RX PMA Iteface FIFO's empty coditio. Default value is Off.
Eable x_pmaif_fifo_pempty pot O/Off Eables the pot that idicates the RX PMA Iteface FIFO's patially empty coditio. Default value is Off.
Eable x_pmaif_fifo_pfull pot O/Off Eables the pot that idicates the RX PMA Iteface FIFO's patially full coditio. Default value is Off.
RX Coe Iteface Paametes
RX coe iteface FIFO mode

Phase compesatio

Elastic

Specifies the mode fo the RX Coe Iteface FIFO. Default value is Phase compesatio.
Eable RX double width tasfe O/Off Eables double width RX data tasfe mode. I this mode, coe logic ca be clocked with a half ate clock. Default value is O.
RX coe iteface FIFO patially full theshold 10 Specifies the patially full theshold fo the RX Coe Iteface FIFO. Default value is 10.
RX coe iteface FIFO patially empty theshold 2 Specifies the patially empty theshold fo the RX Coe Iteface FIFO. Default value is 2.
Eable x_fifo_full pot O/Off Eables the optioal x_fifo_full status output pot. This sigal idicates whe the RX coe FIFO has eached the full theshold. This sigal is sychoous with x_clkout. Default value is Off.
Eable x_fifo_empty pot O/Off Eables the optioal x_fifo_empty status output pot. This sigal idicates whe the RX coe FIFO has eached the empty theshold. This sigal is sychoous with x_clkout. Default value is Off.
Eable x_fifo_pfull pot O/Off Eables the optioal x_fifo_pfull status output pot. This sigal idicates whe the RX coe FIFO has eached the specified patially full theshold. Default value is Off.
Eable x_fifo_pempty pot O/Off Eables the optioal x_fifo_pempty status output pot. This sigal idicates whe the RX coe FIFO has eached the specified patially empty theshold. Default value is Off.
Eable x_fifo_d_e pot O/Off Eables the optioal x_fifo_d_e cotol iput pot. This pot is used fo Elastic FIFO mode. Assetig this sigal eables the ead fom RX coe FIFO. You must eable this ead eable whe usig Elastic FIFO. Default value is Off.
RX Clock Optios
Selected x_clkout clock souce

Wod Clock

Bod Clock

Use Clock 1

Use Clock 2

Sys PLL Clock

Sys PLL Clock Div2

Specifies the x_clkout output pot souce. Default value is Sys PLL Clock Div2.
Fequecy of x_clkout Output Displays the fequecy of x_clkout i MHz based o x_clkout souce selectio.
Eable x_clkout2 pot O/Off Eables the optioal x_clkout2 output clock. Default value is Off.
Selected x_clkout2 clock souce

Wod Clock

Bod Clock

Use Clock 1

Use Clock 2

Sys PLL Clock

Sys PLL Clock Div2

Specifies the x_clkout output pot souce. Default value is Wod Clock.
x_clkout2 clock div by 1, 2 Selects the x_clkout2 divide settig that divides out the x_clkout2 output pot souce. Default value is 1.
Fequecy of x_clkout2 Output Displays the fequecy of x_clkout2 i MHz based o x_clkout2 souce selectio ad x_clkout2 clock divide by facto.
Selected x_coeclki clock etwok

Dedicated Clock

Global Clock

Specifies the type of clock etwok to use to oute the clock sigal to x_coeclki pot. Dedicated Clock allows a highe maximum fequecy (fmax) betwee the FPGA fabic ad the FPGA fabic ad RX Coe iteface FIFO. The umbe of Dedicated Clock lies ae limited. Default value is Dedicated Clock.