DS-0040 is a document about a single-chip USB OTG full-speed host and high-speed peripheral controller. This product replaces the traditional two-chip system, reducing system cost and board space, while also reducing system design complexity and power consumption. It supports simultaneous host and peripheral operation, compatible with USB 2.0 specification and USB 2.0 On-The-Go Supplement. The product uses a single 3.3V power supply, interfaces with a wide range of MCUs with a flexible I/O voltage of 1.65V to 3.6V, and has low power operation suitable for mobile applications. It also features an integrated charge pump and a 16-bit memory mapped interface, with fast microprocessor access cycle and double/multi-buffering support, as well as two DMA channels for the high-speed peripheral controller, reducing CPU utilization.
The OXU121HP integrates a full‑speed USB host and a high‑speed USB peripheral controller in a single chip, allowing simultaneous host and peripheral operation. It supports USB 2.0 OTG specifications, a single 3.3 V supply, and flexible I/O voltage from 1.65 V to 3.6 V, making it suitable for a wide range of MCUs and DSPs.
Key features include low power consumption (30 mA host, 75 mA peripheral), up to eight bi‑directional endpoints, two DMA channels, an on‑chip charge pump, and support for multiple operating systems via the USBLink software suite. The device is offered in 100‑pin LQFP and 84‑ball BGA packages.
| Supply voltage (VDD3.3) | 3.3 V |
|---|---|
| I/O voltage range | 1.65 V to 3.6 V |
| Maximum host current | 30 mA |
| Maximum peripheral current | 75 mA |
| Number of bi‑directional endpoints | 8 |
| Operating temperature range | -40 °C to +85 °C |
| Package options | 100‑pin LQFP, 84‑ball BGA |
The host operation can draw up to 30 mA (max).
The peripheral supports up to eight bi‑directional endpoints.
It is available in a 100‑pin LQFP package and an 84‑ball BGA package.
The device operates from –40 °C to +85 °C.