In embedded system design, SMARC (Smart Mobility ARChitecture) has become one of the most widely adopted low-power Computer-on-Module (COM) standards for Industrial IoT, edge computing, medical devices, and transportation systems.
Released in August 2024, SMARC 2.2 maintains full backward compatibility with SMARC 2.1.1 while introducing forward-looking enhancements tailored for next-generation high-performance, low-power SoCs.
So why are more and more new projects explicitly choosing SMARC 2.2?
Let’s analyze from three practical dimensions: engineering value, technological readiness, and lifecycle strategy.
One of the most important design philosophies of SMARC 2.2 is:
“Enhance the future without breaking the past.”
SMARC 2.2 keeps:
The same 82mm × 50mm / 82mm × 80mm form factor
The same 314-pin MXM3 connector
The same mounting hole positions
The same major power domain definitions
This means:
Existing SMARC 2.1.1 carrier boards can, in most cases, directly accept SMARC 2.2 modules.
Hardware redesign is typically unnecessary.
Engineering teams do not need to relearn a new ecosystem.
Supply chain, validation flow, and compliance processes remain reusable.
👉 Choosing SMARC 2.2 today does not increase short-term risk.
Instead, it provides long-term specification dividends.
The core value of SMARC 2.2 lies in its standardized support for next-generation high-speed interfaces.
| Interface | SMARC 2.1.1 (2020–2024) | SMARC 2.2 (2024+) | Engineering Impact |
|---|---|---|---|
| PCIe | Mainly Gen3, typically 1× x4 or 2× x1 | Clearly defined Gen4 support, configurable 2× x4 or 1× x4 + 2× x2 | Enables NVMe SSD, 10G/25G Ethernet NICs, AI accelerators |
| SERDES | Limited multiplexing definition | Adds SERDES Reset & Interrupt multiplexed GPIO | Easier integration of optical modules, SERDES cameras |
| Audio | I²S / HDA | I²S2 multiplexable as SoundWire | Supports next-gen low-power, high-fidelity audio codecs |
| Ethernet | 2× GbE | Improved signal integrity definition, updated LINK signals | Better readiness for 2.5G / 5G / 10G industrial Ethernet |
| Documentation | Some ambiguous signal definitions | Improved pinout clarity and multiplexing rules | Reduces schematic errors and speeds debugging |
These are not cosmetic changes.
They directly determine whether a module can fully utilize high-performance SoCs such as:
NXP i.MX95
Renesas RZ/G3
MediaTek Genio
AMD Ryzen Embedded
SMARC 2.2 ensures these processors can unleash their full bandwidth and peripheral capabilities.
Edge systems are rapidly evolving toward:
Real-time AI inference
Multi-camera industrial vision
Multi-gigabit networking
Deterministic Ethernet
Real-time audio/video streaming
Common bottlenecks in older designs include:
PCIe Gen3 x4 bandwidth limitations
Lack of native SoundWire support
Non-standardized SERDES control signaling
SMARC 2.2 addresses these constraints by reserving and standardizing resources for:
Higher PCIe bandwidth
Modern low-power audio buses
Structured high-speed peripheral control
This enables a powerful commercial model:
“Design the carrier once. Upgrade the module multiple times.”
For OEMs planning 3–7 year product lifecycles, this flexibility is critical.
As of early 2026:
NXP Semiconductors recommends SMARC 2.2 for its i.MX95 ecosystem
Renesas Electronics and MediaTek new platforms are launched directly under SMARC 2.2
Kontron, Toradex, and ADLINK Technology have largely transitioned new designs to 2.2
SMARC 2.1.1 remains safe and stable —
but you’ll notice that the newest and most performance-oriented reference designs are increasingly based on 2.2.
Choose SMARC 2.2 if:
Your project starts in 2025–2026
You target a 3–7 year lifecycle
You require PCIe Gen4, multi-gigabit networking, or edge AI scalability
Choose SMARC 2.1.1 if:
You maintain an existing product
Your performance requirements are frozen at 2023 levels
You are extremely cost-sensitive
In today’s embedded computing era defined by:
AIoT
Multi-gigabit networking
Deterministic industrial communication
SMARC 2.2 is not merely an incremental upgrade.
It is a strategic foundation designed to support the next 3–5 years of mainstream low-power embedded innovation.
For forward-looking designs, SMARC 2.2 represents the best balance between compatibility, scalability, and long-term value.
The SMARC Modules series from Shenzhen Beilai Technology Co., Ltd. is fully designed in compliance with the SMARC 2.2 specification.
By aligning with the latest standard, Beilai ensures:
Long-term compatibility with next-generation SoCs
Optimized high-speed interface support
Strong lifecycle scalability for industrial and edge AI applications
Carrier board reuse with forward performance upgrades
For customers planning new designs in 2025 and beyond, Beilai’s SMARC 2.2-based modules provide a future-ready, reliable, and scalable embedded computing foundation.
