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1.
General description
The ISP1583 is a cost-optimized and feature-optimized Hi-Speed Universal Serial Bus
Rev. 2.0”, supporting data transfer at high-speed (480 Mbit/s) and full-speed (12 Mbit/s).
The ISP1583 provides high-speed USB communication capacity to systems based on
microcontrollers or microprocessors. It communicates with a microcontroller or
microprocessor of a system through a high-speed general-purpose parallel interface.
The ISP1583 supports automatic detection of Hi-Speed USB system operation. Original
USB fall-back mode allows the device to remain operational under full-speed conditions. It
is designed as a generic USB peripheral controller so that it can t into all existing device
classes, such as imaging class, mass storage devices, communication devices, printing
devices and human interface devices.
The ISP1583 is a low-voltage device, which supports I/O pad voltages from 1.65 V to
3.6 V.
The internal generic Direct Memory Access (DMA) block allows easy integration into data
streaming applications. In addition, the various congurations of the DMA block are
tailored for mass storage applications.
The modular approach to implementing a USB peripheral controller allows the designer to
select the optimum system microcontroller from the wide variety available. The ability to
reuse existing architecture and rmware shortens the development time, eliminates risk
and reduces cost. The result is fast and efcient development of the most cost-effective
USB peripheral solution.
The ISP1583 also incorporates features such as SoftConnect, a reduced frequency
crystal oscillator and integrated termination resistors. These features allow signicant cost
savings in system design and easy implementation of advanced USB functionality into PC
peripherals.
2.
Features
I Complies fully with:
N Most device class specications
N ACPI, OnNow and USB power management requirements
I Supports data transfer at high-speed (480 Mbit/s) and full-speed (12 Mbit/s)
I Direct interface to ATA/ATAPI peripherals; applicable only in split bus mode
I High performance USB peripheral controller with integrated Serial Interface Engine
(SIE), Parallel Interface Engine (PIE), FIFO memory and data transceiver
ISP1583
Hi-Speed USB peripheral controller
Rev. 07 — 22 September 2008
Product data sheet