The USB port can deliver enough power for the vast majority of designs. If this LED does not illuminate when an acceptable power supply is connected, please contact your distributor of Digilent Support for further help. This power source can come from the Digilent USB-JTAG port (J10) or it can be derived from a 7 to 15 Volt DC power supply that’s connected to the Power Jack (J13) or Pin 8 of Header J7.Ī power-good LED (LD11), driven by the 3.3V output (VCC3V3) of the DA9062 regulator, indicates that the board is receiving power and that the onboard supplies are functioning as expected. The Arty A7 requires a 5 volt power source to operate. Designing this way has many advantages, but is very unlike programming a single board computer, and instead is used by those familiar with FPGA design or interested in designing and implementing a digital circuit that doesn't contain a processor. This design flow requires that you describe your RTL circuit using an HDL within Vivado, and it does not use the Vivado IPI or XSDK tools. Soft SoC configurations and MicroBlaze programs can also be loaded into the 16MB non-volatile program memory so that they execute immediately after the Arty is powered on.Īlthough the Arty A7 is particularly well suited for Microblaze Soft SoC designs, it can also be programmed with a Register-Transfer Level (RTL) circuit description like any other FPGA development platform.
At this point, programming the Arty is very similar to programming other SoC or microcontroller platforms: Programs are written in C, programmed into board over USB, and then optionally debugged in hardware. After the IPI to XSDK handoff, XSDK is automatically configured to include libraries and examples for the peripheral blocks you've included in your SoC.
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This is done by exporting your SoC design out of Vivado IPI and into the Xilinx Software Development Kit (XSDK), an Integrated Development Environment (IDE) for designing/debugging MicroBlaze programs in C. The Arty A7 supports large MicroBlaze programs with demanding memory requirements by providing 16MB of non-volatile program memory and 256MB of DDR3L RAM.Īfter you design your soft SoC configuration for the Arty A7 you can start writing programs for it. The MicroBlaze processor in an SoC configuration is typically run at 100 MHz, though it is possible to design your SoC so that it can operate at over 200MHz. MicroBlaze is a 32-bit RISC soft processor core, designed specifically to be used in Xilinx FPGAs. The Arty A7's Soft SoC configurations are powered by MicroBlaze processor cores. For those with no interest in learning HDL, the Xilinx High Level Synthesis tool can be used to define custom peripheral blocks by writing them in C. Ambitious users will also find that they can create their own peripheral blocks by writing them in a Hardware Definition Language (HDL), specifically Verilog or VHDL.
These pre-built peripherals include timers, UART/SPI/IIC controllers, and many of the other devices you would typically find in an SoC or microcontroller. In this tool, pre-built peripheral blocks are dragged from an extensive library and dropped into your processing system as you see fit. These “Soft SoC” FPGA configurations are designed graphically using a tool called Vivado IP Integrator (Vivado IPI). Among their many features, FPGAs have the ability to transform into a custom software-defined System-on-a-Chip (SoC).
What makes the Arty A7 so flexible is its FPGA.
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