Hardware design ·
A system on module needs a carrier-board contract, not a connector map
An AMD Xilinx System on Module can accelerate a product schedule, but only if the carrier-board boundary is designed as an engineering contract, not a connector map.
A dependable integration plan covers five things.
Define interfaces by behaviour
Specify voltage levels, direction, timing, boot-time state and ownership, not pin names alone. A pin name says where a signal goes. It does not say what the signal is doing while the system is starting up, or who is responsible for it.
Close the power and reset sequence early
PMIC behaviour, enables, reset release and power-good signals should agree across the SoM and the carrier. Settling this early avoids a class of problems that otherwise appear as intermittent boot failures late in bring-up.
Protect the high-speed paths
Document lane assignment, reference clocks, impedance rules, return paths and test access before layout is locked. Each of these is cheap to decide on paper and expensive to change once the board is routed.
Make boot observable
Capture boot mode, console output and rail and reset state, so that the hardware team and the BSP team share the same evidence. When both sides look at the same measurements, a boot problem stops being an argument about whose layer is at fault.
Plan for serviceability
Identify what can be measured, updated or recovered in the lab and in the field. A board that can only be debugged on the bench becomes a problem as soon as it is deployed.
The goal is not merely to make the module run. It is to make the full platform repeatable, from the first prototype through production validation.
What interface do you freeze first when defining a SoM carrier board: power, boot or high-speed I/O?