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

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

2.2.5. Topologies

F-Tile-suppoted potocols use EMIBs, PMAs, ad steams fo the elevat had IP. Because had IPs i multi-potocol F-Tile desigs shae PMAs ad EMIBs, specific paiigs of PMAs ad EMIBs ae equied to suppot diffeet combiatios of had IPs, PTP-eabled pots, ad badwidths. These paiigs ae called topologies. F-Tile suppots 15 pe-defied topologies, each with diffeet costaits. Evey F-Tile desig must follow oe of these topologies. You caot dyamically ecofigue fom oe topology to aothe. Dyamic ecofiguatio is allowed oly withi a topology.

Select a topology based o the followig desig cosideatios:

  • Do you eed PCIe* ?
  • Do you eed IEEE 1588 pecisio time potocol pots?
  • Do you eed FHT PMA laes?

If you eed to implemet multiple had IPs, veify that thee is a topology that meets you equiemets.

  • If you F-Tile desig does ot utilize all tile esouces, thee may be moe tha oe topology that meets you equiemets.
  • If moe tha oe topology meets you equiemets, select the topology with the most PMAs ad steams available to esue that the maximum umbe of had IPs ca be implemeted.
  • Use the F-Tile Chael Placemet Tool to pla you desig; it shows available PMA, steam, ad EMIB locatios fo each topology.
Table 12.  F-Tile Topologies
Topology PCIe* Had IP 400G Had IP 200G Had IP
Avail-ability Cofig-uatio Avail-ability Cofiguatio Avail-ability Cofiguatio 4
PMA PTP Numbe of PMAs Numbe of Steams Numbe of PMAs Numbe of Steams
1 Yes 1x PCIe* x16 No N/A N/A N/A N/A No N/A N/A
2 Yes 2x PCIe* x8 No N/A N/A N/A N/A No N/A N/A
3 Yes 1x PCIe* x16 Yes FHT Yes 4 4 No N/A N/A
4 Yes 4x PCIe* x4 No N/A N/A N/A N/A No N/A N/A
5 No N/A Yes FHT No 4 16 Yes 8 8
6 No N/A Yes FHT Yes 4 16 Yes 6 6
6a No N/A Yes FGT (4) + FHT (4) Yes 8 16 Yes 6 6
7 Yes 1x PCIe* x4 Yes FHT Yes 4 16 No N/A N/A
8 Yes 1x PCIe* x8 Yes FHT Yes 4 10 No N/A N/A
9 Yes 2x PCIe* x4 Yes FHT Yes 4 10 No N/A N/A
10 No N/A Yes FGT No 8 16 Yes 8 8
11 No N/A Yes FGT Yes 8 16 Yes 6 6
12 Yes 1x PCIe* x8 Yes FGT Yes 8 11 No N/A N/A
13 Yes 2x PCIe* x4 Yes FGT Yes 8 11 No N/A N/A
14 Yes 1x PCIe* x4 Yes FGT Yes 12 16 No N/A N/A
15 No N/A Yes FGT Yes 16 16 No N/A N/A
16 No N/A Yes

FHT

No

4

4

No N/A N/A

FGT

No

8

12

Fo example:
  • Topology 2: 2x PCIe* x8:
    • The PCIe* had IP implemets two pots of PCIe* x8.
    • You caot implemet ay othe potocol iteface i this F-Tile.
    • 400G had IP ad 200G had IP ae uavailable.
  • Topology 3: 1x PCIe* x16 + 400G Had IP (FHT) with PTP is a supeset of Topology 1: 1x PCIe* x16. That meas if you taget implemetatio woks with Topology 1: 1x PCIe* x16, it also woks with Topology 3: 1x PCIe* x16 + 400G Had IP (FHT) with PTP.

  • Topology 6a: Mix of Topology 6 ad 11. It uses the mixed tasceive mode fo 400G Had IP with fou FHT PMA ad fou FGT PMA (Quad2). I this topology, the 200G Had IP suppots a maximum data ate of 150G with seve FGT PMAs (Quad0: 0-3 ad Quad1: 0-2).

4 Fo 200G had IP, all PMAs ae FGT, ad PTP is ot available.