LCD Touchscreen Interface on Xinmingxin AM5728_am5718 Development Board
1 Overview of the Development Kit
- Based on the TI AM5728 floating-point dual DSP C66x + dual ARM Cortex-A15 industrial control and high-performance audio/video processor;
- Heterogeneous multi-core CPU integrating dual-core Cortex-A15, dual-core C66x floating-point DSP, dual-core PRU-ICSS, dual-core Cortex-M4 IPU, and dual-core GPU, supporting multi-core development with OpenCL, OpenMP, and SysLink IPC;
- Powerful video encoding and decoding capabilities, supporting 2K@30fps, 1×1080P@60fps, 2×720P@60fps, or 4×720P@30fps hardware video encoding/decoding, and H.265 software decoding;
- Supports up to 1×1080P@60fps full HD video input, and 1×LCD + 1×HDMI 1.4a output;
- Dual-core PRU-ICSS industrial real-time control subsystem supporting industrial protocols such as EtherCAT, EtherNet/IP, and PROFIBUS;
- High-performance GPU with dual-core SGX544 3D accelerator and GC320 2D graphics engine, supporting OpenGL ES 2.0;
- Rich peripheral interfaces, including dual Gigabit Ethernet, PCIe, GPMC, USB 2.0, UART, SPI, QSPI, SATA 2.0, I2C, DCAN, and other industrial control buses and interfaces, with support for high-speed USB 3.0;
- Development board exposes V-PORT video interface for flexible connection to video input modules;
- Ultra-compact size: only 86.5mm × 60.5mm;
- Industrial-grade precision B2B connector with 0.5mm pitch, stable, easy to plug/unplug, reverse-insertion protection; high-speed connectors used for critical high-data-rate interfaces to ensure signal integrity.
The XM5728-IDK-V3 is a development board designed by Shenzhen Xinmingxin based on the TI AM5728 (dual floating-point DSP C66x + dual ARM Cortex-A15) XM5728-SOM system-on-module. It provides users with a testing platform for the XM5728-SOM, enabling rapid evaluation of the core module’s overall performance.
The XM5728-IDK-V3 baseboard uses a 4-layer PCB design with lead-free immersion gold finish. It not only provides customers with comprehensive AM5728 getting-started tutorials but also assists in baseboard development, offering long-term and full technical support to help customers accelerate secondary development and bring products to market quickly. A wide range of demo programs are provided, along with tutorials for DSP+ARM multi-core communication development, comprehensive technical support, and assistance in baseboard design, debugging, and DSP+ARM software development.



Figure 1: Development Kit Diagram
2 Typical Application Areas
- Industrial PCs & HMI
- Industrial Robots
- Machine Vision
- Medical Imaging
- Power Automation
- EtherCAT Master/Slave Controllers
- Industrial Multi-Protocol Smart Gateways
- High-End CNC Systems

2 LCD Touchscreen Interface on AM57x_am5728 Development Board
CON11 is the LCD resistive touchscreen interface, a 40-pin, 0.5mm pitch LCD connector using an FFC (Flexible Flat Cable) socket. The LCD interface includes all common control signals required by LCDs (such as horizontal and vertical sync, clock, and enable signals). The interface definition is shown below:
Baseboard LCD Interface:


