The USBN9603/4 are integrated USB Node controllers with enhanced DMA support. They are compatible with USB specification versions 1.0 and 1.1, and are advanced versions of the USBN9602. The devices integrate the required USB transceiver, a 3.3V regulator, a Serial Interface Engine (SIE), USB endpoint (EP) FIFOs, a versatile 8-bit parallel interface, a clock generator, and a MICROWIRE/PLUS™ interface. Seven endpoint pipes are supported, including one for the mandatory control endpoint and six for interrupt, bulk, and isochronous endpoints. Each endpoint pipe has a dedicated FIFO, with 8 bytes for the control endpoint and 64 bytes for the other endpoints. The 8-bit parallel interface supports multiplexed and non-multiplexed style CPU address/data buses. A programmable interrupt output scheme allows device configuration for different interrupt signaling requirements.
The USBN9603 and USBN9604 are full‑speed USB node controllers that integrate a USB transceiver, a 24 MHz crystal oscillator, a 3.3 V regulator, and a serial interface engine. They provide enhanced DMA support, automatic data handling, and seven FIFO‑based endpoint pipes (one 8‑byte control endpoint and six 64‑byte data endpoints). The 8‑bit parallel interface can operate in non‑multiplexed or multiplexed (Intel‑compatible) mode, and a MICROWIRE/PLUS interface is also available.
The document includes detailed pin‑out diagrams, signal descriptions, clock and reset circuitry, DMA operation modes (standard and automatic), and a complete register map. Physical dimensions, package options (28‑pin CSP and 28‑pin wide‑body), and absolute maximum ratings are also listed, along with a life‑support policy disclaimer.
| Oscillator frequency | 24 MHz |
|---|---|
| Parallel interface width | 8‑bit |
| DMA support | Standard DMA and Automatic DMA (ADMA) up to 16 KB packets |