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ISP1521

Hi-Speed Universal Serial Bus hub controller

Philips Electronics 

Philips Semiconductors

ISP1521

Hi-Speed USB hub controller

2. Features

s Complies with:

x Universal Serial Bus Specification Rev. 2.0

x Advanced Configuration and Power Interface (ACPI™), OnNow™ and USB

power management requirements

s Supports data transfer at high-speed (480 Mbit/s), full-speed (12 Mbit/s) and

low-speed (1.5 Mbit/s)

s Self-powered capability

s USB suspend mode support

s Configurable number of ports

s Internal power-on reset and low voltage reset circuit

s Port status indicators

s Integrates high performance USB interface device with hub handler, Philips Serial

Interface Engine (SIE) and transceivers

s Built-in overcurrent detection circuit

s Individual or ganged power switching, individual or global overcurrent protection,

and non-removable port support by I/O pins configuration

s Simple I2C-bus (master/slave) interface to read device descriptor parameters,

language ID, manufacturer ID, product ID, serial number ID and string descriptors

from a dedicated external EEPROM, or to allow the microcontroller to set up hub

descriptors

s Visual USB traffic monitoring (GoodLink™) for the upstream facing port

s Uses 12 MHz crystal oscillator with on-chip Phase-Locked Loop (PLL) for low

ElectroMagnetic Interference (EMI)

s Supports temperature range from −40 °C to +70 °C

s Available in LQFP80 package.

3. Applications

s Monitor hubs

s Docking stations for notebooks

s Internal hub for USB motherboards

s Hub for extending Easy PCs

s Hub boxes.

9397 750 13702

Product data

Rev. 03 — 24 November 2004

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

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