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

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• Sync

• Setup

• Address

• CRC

• Data Byte(s)

• ACK Bit