Скачать или смотреть Can an FPGA Become a 250 Mbps USB 2.0 Logic Analyzer? |Verilog

Can an FPGA really push 250 Mbps over USB 2.0?
In this video I turn a Digilent Arty A7 (Artix-7) into a USB 2.0 logic analyzer using an FTDI FT2232H in synchronous FIFO (245) mode, and walk through the full Verilog that makes the link fast and reliable. On camera we see ~135 Mbps (screen-recording overhead); the pipeline is built for 200–250 Mbps with low latency.

What you’ll learn

How FT2232H Sync-FIFO works: 8-bit data, 60 MHz clock, RXF#/TXE#/RD#/WR#/OE# handshakes

Verilog FSMs for TX/RX, bus turn-around timing (falling-edge launches), and back-pressure with a 72-bit FIFO

A simple framed protocol (flags + CRC-8) with a 9-byte payload for robust streaming

Loopback/“constant” test mode and SW / SW-multiple modes used as a multi-channel signal analyzer

How this USB link becomes the data engine for a DIY logic analyzer, oscilloscope, or SDR

Hardware

FT2232H mini-module (FTDI)

Arty A7 / Artix-7 FPGA board

Jumper-wire prototype (final build will move to a PCB)

Code

Verilog sources (TX/RX parsers, FIFO, CRC, control FSMs).

Get the verilog code from GitHub:
https://github.com/fromconcepttocircu...

Timestamps
00:00 - Live Demo: 135Mbps Speed, Signal Analyzer & Loopback Test
03:00 - How the FT2232H Synchronous FIFO (245) Mode Works
03:08 - Datasheet Deep Dive: 60 MHz Clock & Handshakes
03:48 - The 8-bit Bus (Read vs. Write Operations)
04:17 - FTDI Read Operation (RXF# Handshake)
05:09 - Critical Timing: Falling-Edge (FPGA) vs. Rising-Edge (FTDI)
06:16 - FTDI Write Operation (TXE# Handshake)
07:07 - Key Challenge: Bus Turnaround & Avoiding Contention
09:19 - Verilog: Controlling Bus Direction (High-Impedance 'Z')
10:34 - Verilog: Transmit (TX) State Machine (FSM) Logic
11:50 - Verilog: Simple Framed Protocol (Flags, Payload, CRC-8)
14:05 - Verilog: Receive (RX) State Machine Overview
15:00 - Conclusion & What's Next (PC-Side C++ Driver)

Want more depth?
Comment if you’d like a separate, line-by-line breakdown of the Verilog state machines or a PC-side driver deep dive.

#FPGA #Verilog #USB2 #FT2232H #LogicAnalyzer #ArtyA7 #Artix7 #EmbeddedSystems #HighSpeedData #SDR #Oscilloscope