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T-Head TH1520 AI system-on-chip processor
Quad-core XuanTie C910 open-source RTL RISC-V (RV64GCV ISA) CPU @ 2GHz
3 issue, 8 instruction, 9-12 stage pipeline
In-order fetch, out-of-order launch, out-of-order completion and in-order retirement
64KB I-cache, 64KB D-cache per core
AI NPU with 4TOPS INT8 @ 1GHz
Support for TensorFlow, ONNX, Caffe
Feature extraction accelerator
Image signal processor
H.264/H.265/JPEG video encoder and decoder
2D accelerator
3D Vulkan/OpenCL/OpenGLES accelerator (IMG?)
C906-based (RV64IMA[FD]C[V] ISA) audio processor subsystem
4GB LPDDR4
16GB eMMC
New Beagle form-factor open-source development board
2xSuperSpeed-USB type-A host (stacked)SuperSpeed USB type-C dual-role with power input (no power output)
Consider adding USB-to-serial/JTAG for the type-C device and move USB to host-only
Gigabit Ethernet with speed/connection indicators
HDMI type-A connector
TBD SDIO WiFi
uSD card cage
2xCSI ribbon cable connectors
1xDSI ribbon cable connector
2x46-pin expansion headers with 4-pin HS-USB extension
2x8-pin "mikroBus shuttle" ribbon-cable connector for audio and sensors
3-pin TTL-level debug UART connector
Fan power connector (fan is optional)
6x LEDs (1 power, 5 programmable)
3x push-buttons (power, reset, boot/user)
5V barrel jack
BeagleBoard.org Debian Linux image
Tracking mainline u-boot/kernel with T-Head patches as needed
Package feeds for custom binaries for TensorFlow Lite, etc.
Familiar and flexible graphical user interface environment
Self-hosted Visual Studio Code IDE via web-browser
USB-based virtual network for "single-cable development"
Documentation needs to start
Reference schematic and PCB source files
Reference for DDR
Reference for PMIC and power design
Additional SoC details (Chinese language is good) - pointers to licensed IP is fine
Clear legal path to usage
Verify the IP in the SoC is licensed for use
Verify the IP user documentation can be public
Signed 3P agreement
Supplier part commitment
10k parts for launch
50k units per yearfixed price and availability 5 years as long as 10k units per year
SDK source required to test board
Documentation needs to launch
Additional SoC details (Chinese language is good) - pointers to licensed IP is fine
Overview of SoC Memory Map
Boot process
Clocking and reset
Interrupts map or List
PLIC (Platform Level Interrupt Controller)
CLINT (Core-Local Interruptor)
L2 Cache Controller
DMA Controller
DDR interface
UART peripheral (including register map)
PWM peripheral (including register map)
I2C controller (including register map)
SPI controller (including register map)
GPIO controller (including register map)
Gigabit Ethernet MAC (including register map)
USB controller (including register map)
SDK source
Open source Linux kernel with reasonable SoC entitlement (or register-level detailed IP documentation)
V4L2 driver for video encoder/decoder
IMG 3D open source Mesa/Vulkan driver
libcamera and V4L2 driver for ISP and CSI video interace for common sensors (IMX219-based Pi camera)
DRM driver for the 2D image accelerator, display processing unit and DSI video interface
ALSA driver for audio interface
Flash latest Ubuntu image UART debug port access WiFi connection GPIO testing Bluetooth testing
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