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

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

2.2.8. Bonding Placement Rules

Whe multiple steams ae boded togethe, thee ae pe-defied, allowed locatios fo EMIBs ad laes based o factue type ad locatio.

Steams ad laes ae placed cotiguously i sequece. The pimay steam is placed at the highest EMIB umbe. The secoday steam is placed at the secod highest EMIB umbe. Subsequet steams ae likewise placed i descedig ode.

I the followig figues, st_x6 ad st_x12 bodig placemets ca oly be used i PMA Diect mode. These placemets ae pimaily meat fo a potocol such as JESD204B/C o potocols which equie PMA Diect bodig of somethig othe tha two, fou, eight, o 16 laes.
Note: Whe bodig 8 PMA laes, you must place them withi two quads. Whe bodig 4 PMA laes, you must place them withi oe quad.
Figue 37. 400G Pimay Steam Placemet
If you use eight boded TX PMA laes i 400G had IP with eight steams of a st_x8 factue:
  • The eight 25 Gbps PMA laes ae deoted as tx_seial_data[7:0].
  • The allowed locatios fo pimay steam tx_seial_data[0] ae EMIB_23 ad EMIB_15.
  • If EMIB_15 is selected, tx_seial_data[0] is assiged to FGT3_Quad1. Subsequetly, tx_seial_data[1] is assiged to EMIB_14 ad FGT2_Quad1; tx_seial_data[2] is assiged to EMIB_13 ad FGT1_Quad1, with subsequet steams followig the same patte.
Figue 38. 200G Pimay Steam Placemet
If you use oe RX PMA lae i 200G had IP with two steams of a st_x2 factue:
  • The 50 Gbps PMA lae is deoted as x_seial_data[0].
  • The allowed locatios fo pimay steam x_seial_data[0] ae EMIB_7 ad EMIB_5.
  • If EMIB_7 is selected, x_seial_data[0] is assiged to FGT3_Quad1, ad the secoday steam is assiged to EMIB_6 ad FGT2_Quad1.

The pimay lae ad steam must be active befoe ad afte dyamic ecofiguatio. Fo example, if you equie a Etheet iteface that suppots dyamic ecofiguatio betwee 200G-CR4 ad 100G-CR2 i 400G had IP:

  • The pimay lae is deoted as eth_tx_seial_data[0] ad eth_x_seial_data[0].
  • Both st_x8 ad st_x4 factues ae used (the fome fo 200G-CR4 ad the latte fo 100G-CR2), but ot at the same time.
  • EMIB_23 ad EMIB_15 ae allowed locatios fo the st_x8 factue pimay steam.
  • EMIB_23, EMIB_19, EMIB_15 ad EMIB_11 ae allowed locatios fo the st_x4 factue pimay steam.
  • Theefoe, you ca choose eithe EMIB_23 o EMIB_15 as the pimay steam locatio because they ae the allowed locatios fo both factue types.

Use the F-Tile Chael Placemet Tool fo you chael placemet plaig. Use the Quatus® Pime Tile Iteface Plae to sig off o the chael placemet fo you boad layout.