ISP1181 Datasheet, PDF (1/69 Pages) NXP Semiconductors – Full-speed Universal Serial Bus interface device

ISP1181
Full-speed Universal Serial Bus interface device
Rev. 01 — 13 March 2000
Objective specification
1. General description
c
c
2. Features
The ISP1181 is a Universal Serial Bus (USB) interface device which complies with
Universal Serial Bus Specification Rev. 1.1. It provides full-speed USB
communication capacity to microcontroller or microprocessor-based systems. The
ISP1181 communicates with the system’s microcontroller or microprocessor through
a high-speed general-purpose parallel interface.
The fully autonomous Direct Memory Access (DMA) operation - auto download, auto
repeat, auto execution - removes the need for the device to re-enable or re-initialize
the DMA operation every time.
The modular approach to implementing a USB interface device allows the designer to
select the optimum system microcontroller from the wide variety available. The ability
to re-use existing architecture and firmware investments shortens development time,
eliminates risks and reduces costs. The result is fast and efficient development of the
most cost-effective USB peripheral solution.
The ISP1181 is ideally suited for application in many personal computer peripherals,
such as printers, scanners, external mass storage (zip drive) devices and digital still
cameras. It offers an immediate cost reduction for applications that currently use
SCSI implementations.
s Complies with Universal Serial Bus Specification Rev. 1.1 and most Device Class
specifications
s High performance USB interface device with integrated Serial Interface Engine
(SIE), FIFO memory, transceiver and 3.3 V voltage regulator
s Interrupt endpoint can be configured in ‘rate feedback’ mode
s High speed (11.1 Mbyte/s or 90 ns read/write cycle) parallel interface
s Fully autonomous and multi-configuration DMA operation
s Up to 14 programmable USB endpoints with 2 fixed control IN/OUT endpoints
s Integrated physical 2462 bytes of multi-configuration FIFO memory
s Endpoints with double buffering to increase throughput and ease real-time data
transfer
s Seamless interface with most microcontrollers/microprocessors
s Bus-powered capability with low power consumption and low ‘suspend’ current
s 6 MHz crystal oscillator with integrated PLL for low EMI