The EZ-USB SX2™ is a high-speed USB interface device produced by Cypress Semiconductor. It supports the USB 2.0 standard and has a maximum working speed of 480Mbps.
The EZ-USB SX2™ is a high‑speed USB 2.0 interface device designed to work with an external master such as a microprocessor, DSP, ASIC, or FPGA. It provides a built‑in USB transceiver, a serial interface engine, and four configurable endpoints sharing a 4‑KB FIFO, supporting both full‑speed (12 Mbps) and high‑speed (480 Mbps) operation. The device is supplied in a 56‑pin SSOP or QFN package and operates at 3.3 V with 5 V‑tolerant I/Os.
The data sheet describes the functional architecture, including the endpoint RAM layout, interrupt system, boot methods, and external interface signals. Detailed register maps, EEPROM organization, and command protocol are provided for configuring the device, handling USB enumeration, and managing data transfers. Timing, polarity, and clock options for the interface are also covered.
| USB compliance | USB 2.0‑certified |
|---|---|
| Supported speeds | Full‑speed 12 Mbps, High‑speed 480 Mbps |
| FIFO memory | 4 KB shared among four endpoints |
| Package | 56‑pin SSOP or QFN |
| Supply voltage | 3.3 V operation, 5 V tolerant I/Os |
It supports full‑speed (12 Mbps) and high‑speed (480 Mbps) operation.
The device provides four configurable endpoints (2, 4, 6, 8) plus a control endpoint 0.
The FIFO memory totals 4 KB, shared among the four endpoints.
It is available in a 56‑pin SSOP or QFN package.