Forlinx has recently released the FET1126Bx-S, a low-power SoM, which is based on the Rockchip RV1126B (commercial) or RV1126BJ (industrial) SoC. Designed for edge AI applications, the module is suitable for smart cameras, AIoT gateways, and intelligent monitoring systems where local video analytics, low power consumption, and long-term stability are required.
It is easy to confuse the newer RV1126B/RV1126BJ with the original Rockchip RV1126, a 32-bit Cortex-A7-based SoC announced around 2020–2021. However, the newer RV1126B/BJ comes with a significant architectural upgrade with a 64-bit quad-core Arm Cortex-A53 processor (instead of the original 32-bit quad-core Cortex-A7) and a more powerful 3.0 TOPS NPU (up from 2.0 TOPS). This updated chip has only recently started appearing in products like Luckfox Aura SBC, Boardcon MINI1126B-P SoM (based on the RV1126B-P), GL.iNet Comet PoE, and GL.iNet Comet Pro KVMs, all of which were released just this year. This makes the FET1126Bx-S SoM one of the first modules to feature the industrial-grade RV1126BJ SoC, and the company also provides the OK1126Bx-S carrier board/development board for evaluation, which includes a 40-pin Raspberry Pi-compatible GPIO header.
Forlinx FET1126Bx-S system-on-module
FET1126Bx-S Specifications:
- SoC – Rockchip RV1126B (performance/commercial) or RV1126BJ (Industrial)
- CPU – Quad-core Arm Cortex-A53 up to 1.6 GHz or 1.3 GHz (industrial) with 32KB L1 I-Cache and 32KB L1 D-Cache, unified 512KB L2 Cache for Cortex-A53
- GPU – 2D Graphics Engine
- VPU
- Video Decoder – H.265/H.264 up to 3840×2160 @ 30fps
- Video Encoder – H.265, H.264, JPEG up to 12Mbps @ 30fps
- JPEG Decoder
- AI accelerator – Rockchip NPU engine up to 3 TOPS (INT8); supports TensorFlow, Caffe, Tflite, Pytorch, Onnx NN, Android NN, etc.
- ISP – 12Mbps @ 30 FPS; AI-ISP: 8 Mbps @ 30 FPS, max resolution 4096 x4096
- System Memory – 1GB, 2GB, or 4GB LPDDR4 options
- Storage
- Fixed 64GB eMMC on the commercial variant
- 8GB/16GB/32GB eMMC options on the industrial variant
- I/Os via 237 pins (140 stamp-hole pins at 1.0 mm pitch + 97 LGA pins at 1.27 mm pitch)
- Storage – SD Card 3.0
- Display
- 4-lane MIPI-DSI, 1.5 Gbps per lane for FHD panels
- BT.656 / BT.1120 parallel digital video output for SD (BT.656) and HD/FHD (BT.1120) displays with embedded sync
- 24-bit parallel RGB up to 1920×1080 @ 60fps
- Note: only one display output support, up to 1920 × 1080 @ 60 fps
- Camera
- Up to 2x MIPI-CSI (2x 4-lane MIPI D-PHY v1.2, up to 2.5 Gbps/lane, MIPI-CSI/LVDS/Sub-LVDS, 2×2 channels, virtual channels)
- DVP parallel camera input up to 150 MHz, compatible with BT.601, BT.656, and BT.1120 formats
- Audio
- Up to 3x SAI (master/slave)
- 2x differential MIC inputs
- 2x audio DSM differential outputs
- Networking – Ethernet configurable as 1x RGMII or 1x 10/100 Mbps Ethernet (with integrated 10/100 Mbps PHY).
- USB
- 1x USB 2.0 Host
- 1x USB 2.0 / USB 3.0 DRD (OTG)
- Other I/Os (Up to 118x GPIOs, excluding SoM internal use)
- Up to 8x UART (max 4 Mbps; UART1–UART7 support auto flow control)
- Up to 2x CAN (CAN 2.0A/B)
- Up to 2x SDIO 3.0
- 1x SD card
- 1x SDIO (3.3 V)
- 1x DSMC (FPGA host interface)
- 4x chip selects
- 8-wire or 16-wire serial modes
- FSPI (boot support, 1/2/4-bit)
- Up to 2x SPI master/slave
- Up to 5x I²C (7-bit / 10-bit, up to 1 Mbps)
- Up to 27x PWM channels
- Up to 24x ADC inputs (13-bit, 2 MSPS)
- Power
- Supply – 5 V DC
- Consumption
- Standby (no load) – 0.505 W
- Camera operation – 0.9 W
- Camera + 7-inch MIPI display + video playback – 1.34 W
- 100% CPU utilization – 1.51 W
- Stress test (CPU + memory + eMMC) – 1.97 W
- Dimensions – 40 × 40 mm
- Operating Temperature
- RV1126B – −20°C to +85°C (Performance/Commercial)
- RV1126BJ – −40°C to +85°C (Industrial)
The SoM runs Linux 6.1.141 and supports firmware flashing via USB OTG or MicroSD card. The Linux BSP includes user and build manuals, factory images, kernel source code, drivers, test programs, file system, flashing tools, development environment, and AI algorithm examples, with documentation, software, and tools to be expanded after product release.
Forlinx OK1126Bx-S Carrier Board
Specifications:
- SoM – Forlinx FET1126Bx-S as described above
- Storage
- MicroSD card slot, supports up to SDR104
- FSPI interface for external Flash boot support
- Display
- LCD interface via pin headers, supports capacitive touch and backlight brightness control
- 4-lane MIPI DSI interface, supports capacitive touch and backlight brightness control
- Camera – 2x MIPI CSI via FPC connectors (4-lane + 4-lane)
- Audio
- Speaker output via onboard power amplifier (supports external 4Ω / 3.3 W speaker)
- Up to 2x microphones (1x onboard)
- Networking
- Ethernet
- 100 Mbps Ethernet RJ45 port
- Gigabit Ethernet RJ45 port
- Note: Only one Ethernet interface can be used at a time due to a single MAC
- Wireless – Dual-band (2.4G & 5GHz) Wi-Fi 5 (802.11ac) and Bluetooth 4.2 via FN-LINK 6221ASRC module with single antenna
- Ethernet
- USB
- USB 3.0 Host Type-A port
- USB 2.0 Host Type-A port
- USB Type-C port for flashing and debugging
- Expansion
- 40-pin Raspberry Pi-compatible GPIO header with 2× CAN, 2x I2C, 1x SPI, 1x UART
- 7x ADC via onboard 8-pin header
- Debugging – USB to serial converter via USB Type-C port
- Misc
- RTC supported via external CR2032 coin-cell battery (onboard connector)
- Toggle switch for selecting boot mode
- Push buttons for reset, power on/off, and update
- Power
- Supply – 12V via DC jack
- Consumption (including SoM)
- Standby (no load) – 1.27 W
- Camera operation – 2.26 W
- Camera + 7-inch MIPI display + video playback – 4.66 W
- 100% CPU utilization – 2.24 W
- Dimensions – 120 × 75mm
Forlinx will not usually provide price information for their SoM and development boards, and the FET1126Bx-S SoM and OK1126Bx-S carrier board are no different. A few more details may be found on the product page.
Debashis Das is a technical content writer and embedded engineer with over five years of experience in the industry. With expertise in Embedded C, PCB Design, and SEO optimization, he effectively blends difficult technical topics with clear communication
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