CPM4
CPM4 Gen4x16 configurations can only be enabled when using DMA mode, as described in Versal Adaptive SoC CPM DMA and Bridge Mode for PCI Express Product Guide (PG347). PCIe® controller-only mode does not support Gen4x16. The support is limited to Gen4x8.
| Speed Grade | -1 | -1 | -2 | -2 | -2 | -3 |
|---|---|---|---|---|---|---|
| Voltage Grade | L (0.70V) | M (0.80V) | L (0.70V) | M (0.80V) | H (0.88V) | H (0.88V) |
| Gen1 (2.5 GT/s per lane) | x16 | x16 | x16 | x16 | x16 | x16 |
| Gen2 (5 GT/s per lane) | x16 | x16 | x16 | x16 | x16 | x16 |
| Gen3 (8 GT/s per lane) | x16 | x16 | x16 | x16 | x16 | x16 |
| Gen4 (16 GT/s per lane) | x8 | x8 | x8 | x8 | x8 1 | x8 1 |
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CPM5
For CPM5, Gen4x16 and Gen5x8 configurations PCIe controller only mode can be supported by enabling AXI-ST 1024-bit interface.
| Speed Grade | -1 | -1 | -2 | -2 | -2 | -2 | -2 | -3 |
|---|---|---|---|---|---|---|---|---|
| Voltage Grade | L (0.70V) | M (0.80V) | L (0.70V) | L (0.70V) | M (0.80V) | M (0.80V) | H (0.88V) | H (0.88V) |
| Overdrive 1 | Don’t Care | Don’t Care | No | Yes | No | Yes | Not Applicable | Not Applicable |
| Speed File | -2LP | -2LHP | -2MP | -2MHP | ||||
| Gen1 (2.5 GT/s per lane) | x16 | x16 | x16 | x16 | x16 | x16 | x16 | x16 |
| Gen2 (5 GT/s per lane) | x16 | x16 | x16 | x16 | x16 | x16 | x16 | x16 |
| Gen3 (8 GT/s per lane) | x16 | x16 | x16 | x16 | x16 | x16 | x16 | x16 |
| Gen4 (16 GT/s per lane) | x8 | x8 | x8 | x16 2 | x8 | x16 2 | x16 2 | x16 2 |
| Gen5 (32 GT/s per lane) 3 | N/A | N/A | N/A | x8 2 | N/A | x8 2 | x8 2 | x8 2 |
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