Libre Computer Alta (AML-A311D-CC)
Alta is Libre Computer’s A311D board for edge AI and vision. Pre-orders opened in November 2023, and boards shipped from late November. Its NPU runs under mainline Mesa through the Teflon TensorFlow Lite delegate. Mainline Linux has supported it since 6.7, and support runs until 2053.
Hardware
Specs
| SoC | Amlogic A311D |
|---|---|
| Process | 12 nm |
| CPU | 4× Cortex-A73 @ 2.2 GHz (big) 2× Cortex-A53 @ 1.8 GHz (LITTLE) |
| Memory | LPDDR4 / LPDDR4X |
| GPU | Mali-G52 MP4 @ 800 MHz Vendor: OpenGL ES 1.1/2.0/3.2, Vulkan 1.1, OpenCL 2.0 Mesa: OpenGL 3.1, OpenGL ES 3.1, Vulkan 1.3, OpenCL 3.0 (Panfrost, PanVK, Rusticl, Panfrost kernel) |
| NPU | Amlogic NPU, 5 TOPS (INT8) |
| VPU | Decode: 4K@60fps H.265, VP9, AVS2 Encode: 1080p@60fps H.264, H.265 |
| ISP | up to 8 MP |
| SoC page | Amlogic A311D |
Interfaces
| Board | Libre Computer Alta (AML-A311D-CC) |
|---|---|
| Memory | LPDDR4 32-bit 2 / 4 GB |
| Camera | 4-lane MIPI CSI (22-pin), dual-camera ISP |
| Display | 1× HDMI 2.0 (4K HDR), 4-lane MIPI DSI (22-pin), 3.5 mm TRRS CVBS/AV jack |
| Storage | microSD (UHS SDR104), eMMC 5.x module connector (screw mount), 16 MB SPI NOR flash (UEFI boot firmware) |
| USB | 4× USB 3.0 Type-A (via hub) 1× USB 2.0 Type-C (dual-role, 5 V / 3 A power input) |
| Ethernet | 1× 1 GbE (PoE via header and add-on) |
| GPIO | 40-pin Raspberry Pi-compatible header |
| Power | 5 V / 3 A via USB Type-C; 7.5 W typical, 10 W full load |
| Debugging | 3-pin UART header |
| Form factor | Libre Computer CC form factor (Raspberry Pi 3 Model B+ footprint and mounting holes) |
| Dimensions | 85 × 56 × 20 mm |
| Firmware | UEFI |
| Other | IR receiver with wake support, USB ROM boot button, boot select switch |
| Software support | Until 2053 |
Compare Libre Computer Alta (AML-A311D-CC) with other boards and SoCs →
Available OS images
Documentation / Links
- Product page and specifications
- GPIO pinout
- Board layout
- Downloads
- Libre Computer Hub
- CNX Software: Libre Computer Alta