USBN9603/USBN9604 Universal Serial Bus Full Speed Node Controller with Enhanced DMA Support is an integrated USB node controller produced by National Semiconductor Corporation.
The USBN9603/USBN9604 is a full‑speed USB node controller that integrates a transceiver, 3.3 V regulator, Serial Interface Engine, endpoint FIFOs and a versatile 8‑bit parallel interface. It supports seven endpoint pipes (one control and six for interrupt, bulk, or isochronous transfers) and offers enhanced DMA with automatic data handling.
The document provides detailed pin descriptions, functional overviews, register maps, timing specifications, package dimensions and safety policies, enabling designers to integrate the device into new designs or portable applications.
| Operating voltage | 5 V or 3.3 V |
|---|---|
| Oscillator frequency | 24 MHz |
| Number of endpoint pipes | 7 |
| Control endpoint FIFO size | 8 bytes |
| Other endpoint FIFO size | 64 bytes |
It is compatible with USB specification versions 1.0 and 1.1.
The controller provides seven endpoint pipes: one control and six for interrupt, bulk, or isochronous transfers.
The internal oscillator runs at 24 MHz.
Yes, the device can operate from either a 5 V or a 3.3 V supply.