E-Tile Transceiver PHY User Guide

ID 683723
Date 9/30/2022
Public
Document Table of Contents

1.5.2. GXE Channel Usage

Channel usage depends on your channel configuration. In NRZ mode, all 24 GXE channels in a tile are available. When the channel is configured in PAM4 mode and the data rate is greater than 30 Gbps, two adjacent core interfaces are combined to provide a single PAM4 channel.
Note: You can configure multiple data rates across different PAM4 channels < 30 Gbps simultaneously.
Figure 13. GXE Channel Usage Example: Channels Running at Data Rates > 30 Gbps PAM4 PMA Direct Mode without RS-FEC12 even-numbered channels are available in a tile when the data rate is greater than 30 Gbps.
Figure 14. GXE Channel Usage Example: Channels Running at Data Rates < 30 Gbps PAM4/NRZ PMA Direct Mode without RS-FEC

The figure above shows an example of an E-tile in a device package that supports all 24 transceiver channels. Based on product family and device package, the number of transceivers in an E-tile can vary. For the exact number of available transceiver channels, refer to the Pin-Out Files for Intel® FPGA Devices. Related information can also be found in the E-tile Channel Placement Tool.

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