tem-str/gowin

Different project with Gowin fpga

GOWIN FPGA

• Tang Nano 9K FPGA
  • Some Intro
  • Characteristic
  • On-board Function block
• CPU
  • Maing Blocks

Tang Nano 9K FPGA

(Gowin's LittleBee family the GW1NR-9)

Tang nano 9K is a development board based on Gowin GW1NR-9 FPGA chip.It equips with HDMI connector, RGB screen interface connector, SPI screen connector, 32Mbit SPI flash and 6 LEDs, so users can use it for FPGA verification, risc-v soft core verification and basic function verification easily and quickly. Its 8640 LUT4 logic units can not only be used for various complex logic circuits designing, but also used for running a complete PicoRV soft core. It also meets various needs of users, such as learning FPGA, verifying soft core and further design.

Language: - Verilog HDL/Verilog

The following documents are very useful for learning FPGA and even if you have a lot of development experience, I recommend reading these documents, since this FPGA has some of its own features.

• SUG949-1.1E_Gowin HDL Coding User Guide.pdf
• UG286-1.9.1E_Gowin Clock User Guide.pdf

The related documents you can find at www.gowinsemi.com

Schematic - Tang_Nano_9K

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Some Intro

---

First of all, we are interesting in the integrated chip GW1NR-9, but not the whole board. The Tand Nano 9K is just a handy board with the necessary interface for learning, so let's get to know her a little.

This repository was created just to try different projects with the GowinFPGA, test all communication protocol, working with Memory (Flash/RAM) and order opportunities of the board. In the future, this knowledge will be useful for other projects

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Characteristic

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ITEM	VALUE
Logic units(LUT4)	8640
Registers(FF)	6480
ShadowSRAM SSRAM(bits)	17280
Block SRAM BSRAM(bits)	468K
Number of B-SRAM	26
User flash(bits)	608K
SDR SDRAM(bits)	64M
18 x 18 Multiplier	20
SPI FLASH	32M-bit
Number of PLL	2
Display interface	HDMI, SPI screen and RGB screen
Debugger Onboard	USB-JTAG and USB-UART
IO	4mA, 8mA, 16mA, 24mA
Connector	TF card slot, 2x24P 2.54mm Header pads
Button	2 programmable buttons for users
LED	Onboard 6 programmable LEDs

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On-board Function block

---

All user gide working with gowin_fpga here

The goal of our project - try to make a bacis CPU, after testing a few simple projects.✒

module counter
(
    input clk,
    output [5:0] led
);

localparam WAIT_TIME = 13500000;
reg [5:0] ledCounter = 0;
reg [23:0] clockCounter = 0;

always @(posedge clk) begin
    clockCounter <= clockCounter + 1;
    if (clockCounter == WAIT_TIME) begin
        clockCounter <= 0;
        ledCounter <= ledCounter + 1;
    end
end

assign led = ~ledCounter;
endmodule

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CPU

Main Blocks

---

• ALU
• MAIN CPU
• SYSTEM_CLOCK
• MEMORY
• REGISTER
• PROGRAMM COUNTER