DC-SCM Carrier Card for OSM-L SoMs

Copyright (c) 2025 Antmicro

Overview

This project includes open hardware design files for a DC-SCM compliant PCB that supports System on Modules following the OSM-L standard specified by the SGet group. The DC-SCM follows the interface and mechanical outline described in the 2.1 revision of the DC-SCM standard specified by the Open Compute Project community. Apart from establishing a base DC-SCM compliant platform, the design includes a series of breakout connectors, jumpers and other supplementary circuitry for developing BMC software features for security, reliability, commissioning and benchmarking.

This DC-SCM card has been designed as a carrier board to an L-sized OSM design that combines a Lattice FPGA and an NXP i.MX943 series Application Processor (AP).

The PCB design files were prepared in KiCad 9.x

Key features

• Landing pad for OSM-L type of SoM
• Realtek 1Gb Ethernet PHY (Realtek RTL8211FDI-CG)
• ITE IT6251 LVDS-DisplayPort bridge
• USB-C port with FTDI FT4232H for SoM debug and software integration
• USB-C port connected to the OSM-L SoM pads
• USB-C port connected to the HPM
• M.2 (key-M) expansion slot connected to the HPM
• Slot for removable BIOS memories connected directly to the HPM
• Optional on-board TPM connector

Project structure

The main directory contains KiCad PCB project files, a LICENSE and a README. The remaining files are stored in the following directories:

• doc - contains board schematic
• img contains graphics for this README

Licensing

This project is published under the Apache-2.0 license.