General Description

The USBN9603/4 are integrated, USB Node controllers.

Other than the reset mechanism for the clock generation circuit,

these two devices are identical. All references to “the

device” in this document refer to both devices, unless otherwise

noted.

The device provides enhanced DMA support with many automatic

data handling features. It is compatible with USB

specification versions 1.0 and 1.1, and is an advanced version

of the USBN9602.

The device integrates the required USB transceiver with 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: one for the mandatory control

endpoint and six to support interrupt, bulk and isochronous

endpoints. Each endpoint pipe has a dedicated FIFO,

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.

Outstanding Features

Low EMI, low standby current, 24 MHz oscillator

Advanced DMA mechanism

Fully static HALT mode with asynchronous wake-up

for bus powered operation

5V or 3.3V operation

Improved input range 3.3V signal voltage regulator

All unidirectional FIFOs are 64 bytes

Power-up reset and startup delay counter simplify system

design

Simple programming model controlled by external controller

Available in two packages

— USBN9603/4SLB: small footprint for new designs

and portable applications

— USBN9603/4-28M: standard package, pin-to-pin

compatible with USBN9602-28M

Features

Full-speed USB node device

Integrated USB transceiver

Supports 24 MHz oscillator circuit with internal 48

MHz clock generation circuit

Programmable clock generator

Serial Interface Engine (SIE) consisting of Physical

Layer Interface (PHY) and Media Access Controller

(MAC), USB Specification 1.0 and 1.1 compliant

Control/Status register file

USB Function Controller with seven FIFO-based Endpoints:

— One bidirectional Control Endpoint 0 (8 bytes)

— Three Transmit Endpoints (64 bytes each)

— Three Receive Endpoints (64 bytes each)

8-bit parallel interface with two selectable modes:

— Non-multiplexed

— Multiplexed (Intel compatible)

Enhanced DMA support

— Automatic DMA (ADMA) mode for fully CPU-independent

transfer of large bulk or ISO packets

— DMA controller, together with the ADMA logic, can

transfer a large block of data in 64-byte packets via

the USB

— Automatic Data PID toggling/checking and NAK

packet recovery (maximum 256x64 bytes of data =

16K bytes)

MICROWIRE/PLUS interface