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Philips Semiconductors
UM10014_4
ISP1520 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 11 May 2004 5 of 18
1. Introduction
The ISP1520 is a Hi-Speed Universal Serial Bus (USB) hub IC, with four downstream facing ports.
The ISP1520 Hub demo board is designed to demonstrate the features and functionality of the
ISP1520. This version is targeted at low-cost designs. Nevertheless, it still contains a large
number of features and options to be evaluated.
This document describes the ISP1520 hub demo board. It also contains the related schematics,
the PCB layout, and the Bill of Material (BoM).
Figure 1-1: ISP1520 Hub demo board
2. ISP1520 Hub demo board Features
• Complies with Universal Serial Bus Specification Rev. 2.0
• Supports self-powered operation
• Configurable number of downstream facing ports (from two to four)
• Customizable Vendor ID, Product ID and Serial Number (by using an external EEPROM or
an external microcontroller)
• Individual power switching and individual overcurrent protection
• USB traffic indication (GoodLink
TM
LED) on the upstream facing port