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UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

Semiconductors

Rev. 04.00 — 11 May 2004 User manual

Document information

Info Content

Keywords

ISP1520, hub controller, USB, universal serial bus

Abstract

This document describes the ISP1520 hub demo board. It also contains

the related schematics, the PCB layout, and the Bill of Material

Summary of content (18 pages)

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UM10014_4 ISP1520 Hi-Speed USB Hub Demo Board Semiconductors Rev. 04.00 — 11 May 2004 User manual Document information Info Keywords Abstract Content ISP1520, hub controller, USB, universal serial bus This document describes the ISP1520 hub demo board. It also contains the related schematics, the PCB layout, and the Bill of Material.
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board Revision history Rev 4.0 3.0 Date May 11, 2004 April 14, 2004 1.1 1.0 Feb 2003 Nov. 2002 Description Updated the schematic. Updated the following: • Section 2 • Section 4 • Section 5.5 • Section 6 Updated Section 5.5 and Section 6. First release. Contact information For additional information, please visit: http://www.semiconductors.philips.com/ For sales office addresses, please send an email to: sales.addresses@www.
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board This is a legal agreement between you (either an individual or an entity) and Philips Semiconductors. By accepting this product, you indicate your agreement to the disclaimer specified as follows: DISCLAIMER PRODUCT IS DEEMED ACCEPTED BY RECIPIENT. THE PRODUCT IS PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND.
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board Contents 1. Introduction ............................................................................................................................................................................... 5 2. ISP1520 Hub demo board Features ...................................................................................................................................... 5 3. System Requirements......................................
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board 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.
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board 3. System Requirements This hub can be attached to a computer that has a USB or Hi-Speed USB host installed, and running any of these operating systems: • Windows® 98 • Windows Me • Windows 2000 • Windows XP • MacOS® If this hub is plugged into a USB host controller, it will only work as a full-speed hub. 4. Power Supply Adapter Requirements Regulated Output: 5.1VCC ± 5%, 2.5A.
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board 5.2. GoodLink Indicator A Philips GoodLink LED D15 (red) is located near the upstream facing port. This LED blinks on every successful USB transaction. 5.3. Port Power Switch Transistors The hub switches the bus power of each downstream facing port through a low ohmic PMOS transistor. 5.4.
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board The hub demo board also contains an option to disable the overcurrent detection. This can be done in two stages. First place the NOOC jumper in the appropriate position to set the hub’s descriptor (see Table 5-2).
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board Table 5-4: Power Mode Selection Using SW1 SW1 S Power Mode Self-powered* B Ignore *— Default settings. Figure 5-1: Windows Reporting of the Self-Powered Mode 5.6. I2C-Bus Interface The ISP1520 can use either its USB descriptors from the internal ROM, or from an external I2CbusTM EEPROM or microcontroller. Mode selection is done through jumpers J1and J2 (see Table 5-5:).
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board An external I2C-bus controller acting as a master can also be used to update hub descriptors through the J42 connector. The J10 jumper is connected to the “Write Protect” pin of the I2C-bus EEPROM. The Hub Controller and the EEPROM have different I2C-bus device addresses. To program this IC on-board, select the jumper according to Table 5-6.
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2 3 4 6 DM2 DP2 B C20 0.1uF 19 29 27 25 OC1 OC2 OC3 OC4 OC1 OC2 OC3 OC4 36 37 DM2 DP2 43 44 DM3 DP3 OC1 OC2 OC3 OC4 B5 A5 15K B6 A6 C12 100uF DM2 DP2 1 VBUS3 4 ESD3 2 REF1 I/O1 3 REF2 I/O2 HEADER 3 DM3 DP3 DM4 DP4 V3.
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board 7. Installing the Board Assuming that you have already installed the USB host adapter (including drivers) on a computer running Windows, installing the hub is fairly simple. 1. Plug in power from the power supply to the hub. The power supply must meet the requirements specified in Section 4. 2. Plug a USB cable in the USB0 port, and connect the other end of the cable to the USB host.
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UM10014_4 Philips Semiconductors ISP1520 Hi-Speed USB Hub Demo Board 8. Bill of Materials for the ISP1520 Hub demo board Part Type 0.1 F 0Ώ 1.5 kΏ, 5% 1F 2.