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

ID 683086
Date 6/24/2022
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2.1.1.1. Possible Combinations of GX and GXT Channels in H-Tile

Note: Refer to protocol specification for IL. For example, for 28G, Backplane support is CEI 3.0 25GLR. Different rates are supported by different specifications.
Table 4.  Combination 1: 4 GXT and 2 GX Channels
Channel Type Number of Channels per Bank Channel Capability for H-Tile
Chip-to-Chip & Chip-to-Module Backplane
GX 2 12.5 Gbps N/A
GXT 3 4 28.3 Gbps 28.3 Gbps
Figure 11. Example Combination 1: 4 GXT and 2 GX Channels
Table 5.  Combination 2: 3 GXT and 3 GX Channels
Channel Type Number of Channels per Bank Channel Capability for H-Tile
Chip-to-Chip & Chip-to-Module Backplane
GX 3 12.5 Gbps N/A
GXT 3 3 28.3 Gbps 28.3 Gbps
Figure 12. Example Combination 2: 3 GXT and 3 GX Channels
Table 6.  Combination 3: 2 GXT and 4 GX Channels
Channel Type Number of Channels per Bank Channel Capability for H-Tile
Chip-to-Chip & Chip-to-Module Backplane
GX 4 12.5 Gbps N/A
GXT 3 2 28.3 Gbps 28.3 Gbps
Figure 13. Example Combination 3: 2 GXT and 4 GX Channels
Table 7.  Combination 4: 1 GXT and 5 GX Channels
Channel Type Number of Channels per Bank Channel Capability for H-Tile
Chip-to-Chip & Chip-to-Module Backplane
GX 5 12.5 Gbps N/A
GXT 3 1 28.3 Gbps 28.3 Gbps
Figure 14. Example Combination 4: 1 GXT and 5 GX Channels
3 If you use GXT channel data rates, the VCCR_GXB and VCCT_GXB voltages must be set to 1.12 V.