ADLINK Technology arm AMPERE COM-HPC-ALT - Expansion Busses

COM-HPC-ALT User’s Guide PICMG COM-HPC R1.0
Page 5 Copyright © 2023 ADLINK Technology, Inc.
Memory
Up to 384GB 3200 MT/s DDR4 in 6 DIMM sockets, Maximum 64GB per socket
Supports RDIMM, UDIMM and LRDIMM and 3DS
3 DIMM on the right side, the other 3 DIMMs on the left side
Cache
1 MB L2 cache per core
32 MB system level cache
Embedded BIOS
EDK2 UEFI with CMOS backup in 32 (or 16, TBC) MB SPI BIOS
2.2 Expansion Busses
PCI Express
64x PCIe lanes with 5x PCIe_REFCLK / 5x PCIe_CLKREQ
- Up to Gen4 speed
- PCIe 0-7 1 x4 or 2 x2 config at 0-3, 1 x4 or 2 x2 config at 4-7, 1 x8 config at 0-7 (from Root Complex B)
- PCIe 8-15 1 x4 or 2 x2 config at 8-11, 1 x4 or 2 x2 config at 12-15, 1 x8 config at 8-15 (from Root Complex B)
- PCIe 16-31 1 x16 or 2 x8 or 4 x4 config at 16-31, (from Root Complex A)
- PCIe 32-47 1 x16 or 2 x8 or 4 x4 config at 32-47, (from Root Complex A)
- PCIe 48-63 1 x16 or 2 x8 or 4 x4 config at 48-63, (from Root Complex A)