Universal Serial Bus (USB) 2.0

USB 1.1/2.0 uses a single differential serial bus to communicate between a computer and peripheral device. Note that Saleae devices can currently only decode low-speed (1.5Mbps) and full-speed (12Mbps) USB traffic.

Top Resources

• Wikipedia
• USB Tutorial
• USB Brief Tutorial

Example USB 1.1 Parts

• FTDI Breakout
• USB Bit Whacker
• Pinguino 18F2550 Dev Board

What Logic Decodes

• Sync
• Setup
• Address
• CRC
• Data Byte(s)
• ACK Bit