This document is the UHC124 USB Host Controller data sheet released by TransDimension Inc.
The UHC124 USB host controller is designed for embedded applications such as set‑top boxes, PDAs, and digital cameras. It complies with USB 2.0 specifications, supports both low‑speed (1.5 Mbps) and full‑speed (12 Mbps) transfers, and provides a 2 KB data memory with double and circular buffering.
The device is supplied in a 64‑pin LQFP package, operates from a single 3.3 V supply, and uses a 6 MHz crystal/oscillator. It features a root hub with four downstream ports, batch processing of up to 16 transactions, and extensive power‑saving modes including host suspend and remote wake‑up.
| Data Memory | 2 KB |
|---|---|
| Package | 64‑pin LQFP |
| Power Supply | Single 3.3 V |
| Crystal/Oscillator Frequency | 6 MHz |
| Supported USB Speeds | Low‑speed 1.5 Mbps, Full‑speed 12 Mbps |
| Maximum Packet Size | 1023 bytes |
| Root Hub Downstream Ports | 4 |
The UHC124 provides 2 KB of data memory.
It operates from a single 3.3 V power supply.
The root hub includes four downstream ports.
It supports low‑speed (1.5 Mbps) and full‑speed (12 Mbps) USB 2.0 transfers.