AN 778: Intel® Stratix® 10 L-Tile/H-Tile Transceiver Usage

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ID 683086
Date 6/24/2022
Public
Document Table of Contents
Document Table of Contents x
1. Transceiver Layout 2. Tile Architecture Constraints 3. PCIe Guidelines 4. Document Revision History for AN 778: Intel® Stratix® 10 L-Tile/H-Tile Transceiver Usage
1. Transceiver Layout x
1.1. L-Tile and H-Tile Overview
1.1. L-Tile and H-Tile Overview x
1.1.1. PLLs 1.1.2. Transmitter Clock Network 1.1.3. GXT Clock Network 1.1.4. Calibration
1.1.1. PLLs x
1.1.1.1. ATX PLL 1.1.1.2. fPLL 1.1.1.3. CMU PLL
1.1.2. Transmitter Clock Network x
1.1.2.1. Bonded Transceiver Channels - Guidelines for VCCR_GXB and VCCT_GXB
2. Tile Architecture Constraints x
2.1. Transceiver Channel Placement 2.2. Unsupported Dynamic Reconfiguration Features 2.3. Intel® Stratix® 10 L-Tile Transceiver to H-Tile Transceiver Migration 2.4. Thermal Guidelines
2.1. Transceiver Channel Placement x
2.1.1. Possible Combinations of GX and GXT Channels 2.1.2. GX Channels 2.1.3. GXT Channels 2.1.4. Bonded Channel Placement with Data Rate Change 2.1.5. Reference Clock Guidelines for L-Tile and H-Tile 2.1.6. PLL Placement
2.1.1. Possible Combinations of GX and GXT Channels x
2.1.1.1. Possible Combinations of GX and GXT Channels in H-Tile 2.1.1.2. Possible Combinations of GX and GXT Channels in L-Tile
2.1.2. GX Channels x
2.1.2.1. Non-bonded GX Channels 2.1.2.2. Bonded GX Channels
2.1.6. PLL Placement x
2.1.6.1. ATX PLL – fPLL Spacing Requirements 2.1.6.2. ATX PLL Usage Model When Driving GXT Channels 2.1.6.3. Simplex Channel Merging 2.1.6.4. TX PLL Restrictions when Using PCIe*
3. PCIe Guidelines x
3.1. PCIe Hard IP 3.2. PHY Interface for PCIe Express (PIPE)
3.1. PCIe Hard IP x
3.1.1. Channel Placement for PCIe Hard IP 3.1.2. PLL Placement for PCIe Hard IP 3.1.3. Non-PCIe and PCIe Hard IP Channel Placement in L-Tile and H-Tile
3.2. PHY Interface for PCIe Express (PIPE) x
3.2.1. Channel Placement for PIPE 3.2.2. PLL Placement for PIPE 3.2.3. Non-PCIe and PCIe PIPE Channel Placement in H-Tile 3.2.4. Non-PCIe and PCIe PIPE Channel Placement in L-Tile
1. Transceiver Layout
2. Tile Architecture Constraints
3. PCIe Guidelines
4. Document Revision History for AN 778: Intel® Stratix® 10 L-Tile/H-Tile Transceiver Usage

3.2.4. Non-PCIe and PCIe PIPE Channel Placement in L-Tile

For L-Tile ES1 and L-Tile Production devices, non-PCIe channels fulfilling the following channel placement rules may observe momentary bit errors (BER) when an active PCIe PIPE interface that are Gen2 or Gen3 capable and configured with more than 4 lanes (Gen2/3 x8, x16) goes through rate change event (PCIe link training both up and down, during link down and start of link training.

Avoid the following channel placements, or bring up the PCIe PIPE interface first, followed by the non-PCIe channels.
  • GX channels at data rates above 6.5 Gbps or GXT channels that share a bank with the PCI Express interface.
  • OTN or SDI channels at a data rate higher than 9 Gbps that share a tile with the PCI Express interface.
Transceiver channels that share a tile with active PCI Express interfaces that are only Gen1 capable are not impacted.
Figure 42. Channel Placement for GX channel > 6.5 Gbps or GXT channel and PCIe PIPE Channels in L-Tile
Figure 43. Channel Placement for OTN or SDI channel > 9 Gbps and PCIe PIPE channels in L-Tile
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