Lark Board is an evaluation board designed by Embest based on an ARM (Cortex-A9 dual-core)+FPGA processor for areas such as medical instruments, video surveillance and industrial control. The SoC integrates FPGA and ARM-based HPS (Hard Processor System) which are bridged to each other by using an AXI high-speed interconnection bus. The HPS includes a dual-core ARM Cortex-A9 processor, peripherals and memory controller and operates at up to 800MHz, allowing a higher performance with lower power consumption.Lark Board provides 1GB DDR3 SDRAM separately for both ARM and FPGA, and has 4 high-speed USB2.0 Host interfaces, a TF card slot for mass storage, a 12-bit camera interface, a VGA interface, a 24-bit LCD interface, PCIe, UART, JTAG, 3G SDI input/output and a HDMI interface. Additionally, two 2*10-pin connectors are mounted on the board in order to make the unused pins of HPS/FPGA available for users.Lark Board uses a switching power supply controller chip (integrated with inductor) that comes from Intel® Enpirion® family to provide a stable and efficient output for each BANK of FPGA. Meanwhile, it has two on-board DIP switches used to enable various voltage levels required by the different interfaces on the board with the purpose to facilitate power consumption evaluation conducted by users.Lark Board comes with source code of Debian 7.4 system image, as well as board schematics and datasheet of the key chips so as to help users implement a fast evaluation and secondary development.