Philips UM10011 Manuel utilisateur
UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
Semiconductors Rev. 04.00 — 17 June 2004 User manual
Document information
Info Content
Keywords ISP1521, hub controller, USB, universal serial bus
Abstract This document describes the ISP1521 hub demo board. It also contains
the related schematics, the PCB layout, and the Bill of Material.
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 2 of 20
Revision history
Contact information
For additional information, please visit: http://www.semiconductors.philips.com/
Rev Date Description
4.0 June 2004 Updated the schematics.
3.0 Apr 2004 Updated the following:
• Section 2
• Section 5.7
• Removed Section 5.8 on hybrid power
• Section 6.
1.1 Mar 2003 Updated Section 5.7 and Section 6.
Corrected I2C to I2C-Bus
1.0 Nov. 2002 First release.
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 3 of 20
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. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, PHILIPS
SEMICONDUCTORS FURTHER DISCLAIMS ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY
IMPLIED WARRANTIES OF MERCHANT ABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
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PRODUCT AND DOCUMENTATION REMAINS WITH THE RECIPIENT. TO THE MAXIMUM EXTENT
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ARISING OUT OF THIS AGREEMENT OR THE USE OF OR INABILITY TO USE THE PRODUCT, EVEN IF
PHILIPS SEMICONDUCTORS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 4 of 20
Contents
1. INTRODUCTION...................................................................................................................................................................5
2. ISP1521 HUB DEMO BOARD FEATURES.........................................................................................................................5
3. SYSTEM REQUIREMENTS.....................................................................................................................................................6
4. POWER SUPPLY ADAPTER REQUIREMENTS................................................................................................................6
5. HUB DEMO BOARD DESCRIPTION.................................................................................................................................6
5.1. ISP1521 80-Pin LQFP Package.......................................................................................................................................6
5.2. Port Indicators..................................................................................................................................................................7
5.3. Power LED Indicator......................................................................................................................................................7
5.4. GoodLink Indicator.........................................................................................................................................................7
5.5. Port Power Switch Transistors.....................................................................................................................................8
5.6. Overcurrent Circuit Detection....................................................................................................................................8
5.7. Power Supply....................................................................................................................................................................8
5.8. I2C-Bus Interface............................................................................................................................................................10
5.9. Other Jumpers................................................................................................................................................................11
5.9.1. J13 (NOOC)..........................................................................................................................................................11
5.9.2. J14 (SUSPEND)......................................................................................................................................................11
6. SCHEMATICS..........................................................................................................................................................................11
7. INSTALLING THE BOARD.................................................................................................................................................19
8. BILL OF MATERIALS FOR THE ISP1521 HUB DEMO BOARD.................................................................................20
9. REFERENCES...........................................................................................................................................................................20
GoodLink and I2C-Bus are trademarks of Koninklijke Philips Electronics N.V. Microsoft is a registered trademark of
Microsoft Corp. The names of actual companies and products mentioned herein may be the trademarks of their
respective owners. All other names, products, and trademarks are the property of their respective owners.
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 5 of 20
1. Introduction
The ISP1521 is a Hi-Speed Universal Serial Bus (USB) hub IC, with seven downstream facing
ports. The ISP1521 Hub Demo Board is designed to demonstrate the features and functionality
of the ISP1521.
This document describes the ISP1521 Hub Demo Board. It also contains the related schematics,
the PCB layout, and the Bill of Material (BoM).
Figure 1-1: ISP1521 Hub Demo Board
2. ISP1521 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 seven)
• 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 (GoodLinkTM LED) on the upstream facing port
• Port status indicators.
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 6 of 20
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 the hub is plugged into a USB host controller, it will work only as a full-speed hub.
4. Power SupplyAdapter Requirements
Regulated Output: 5.1 VCC ± 5%, 4 A.
Warning: The power plug polarity is (-) at the core and (+) at the outer shield.
5. Hub Demo Board Description
5.1. ISP1521 80-Pin LQFP Package
The ISP1521 has these port configurations:
• One Hi-Speed USB and USB capable upstream facing port (USB0), and
• Seven Hi-Speed USB and USB capable downstream facing ports (USB1, USB2, USB3, USB4,
USB5, USB6, USB7).
The port numbers are marked near the USB connectors on the silkscreen. The downstream
facing ports USB3, USB4, USB5, USB6 and USB7 can be disabled. Disabling a port will also disable
all higher-number ports. For example, disabling port USB4 will disable ports USB5, USB6 and
USB7 as well. Therefore, apart from port USB7, it is not possible to selectively disable a port
(For example, only USB5.). By design, ports USB1 and USB2 cannot be disabled.
Table 5-1: Jumper Settings vs. Port Activation
*—Default settings.
These jumpers are set to “ON” by placing a solder joint on the provided footprints.
J2, J1 J4, J3 J6, J5 J10, J9 J8, J7 Active Ports
OFF, OFF OFF, OFF OFF, OFF OFF, OFF OFF, OFF USB1 to USB7*
ON, ON OFF, OFF OFF, OFF OFF, OFF OFF, OFF USB1 to USB6
OFF, OFF ON, ON OFF, OFF OFF, OFF OFF, OFF USB1 to USB5
OFF, OFF OFF, OFF ON, ON OFF, OFF OFF, OFF USB1 to USB4
OFF, OFF OFF, OFF OFF, OFF ON, ON OFF, OFF USB1 to USB3
OFF, OFF OFF, OFF OFF, OFF OFF, OFF ON, ON USB1 to USB2
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 7 of 20
5.2. Port Indicators
The D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13 and D14 are port indicators.
Conforming to the Universal Serial Bus Specification Rev. 2.0, each downstream facing port has two
port indicators—green and amber—placed to its right.
If the green LED is ON, it means the device connected to the port was successfully enumerated
and is functional.
If the amber LED is ON, it means there is an overcurrent condition.
Custom software applications or drivers may flash these LEDs to attract user attention.
5.3. Power LED Indicator
When power is supplied to the board, LED D16 lights up (red).
5.4. GoodLink Indicator
A Philips GoodLinkTM LED D15 (red) is located near the upstream facing port. This LED blinks on
every successful USB transactions.
J
1 and J2 solder
joints to disable a
port
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 8 of 20
5.5. Port Power Switch Transistors
The hub switches on or off the bus power to each downstream facing port through a low ohmic
PMOS transistor.
5.6. Overcurrent Circuit Detection
The integrated analog overcurrent detection circuit of the ISP1521 senses the voltage drop
across the power switch. When the port draws too much current, the voltage drop across the
power switch exceeds the trip voltage threshold. The overcurrent circuit detects this and
automatically switches off the power switch. More information on choosing the switch and
trimming the overcurrent detection voltage can be found in the ISP1521 Hi-Speed Universal Serial
Bus hub controller data sheet.
5.7. Power Supply
To power up the hub, plug the power supply into the power supply socket (PWR_C1).
Jumper J15 will set the powering mode in the hub’s descriptors as self-powered hub; see
Table 5-2.
Table 5-2: Setting the Power Mode Using J15
*—Default settings.
J15 Power Mode Logic State
OFF Self* 1 (HIGH)
J15
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 9 of 20
Figure 5-1: Windows Reporting of the Bus-Powered Mode
Philips Semiconductors UM10011_4
ISP1521 Hi-Speed USB Hub Demo Board
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
User manual Rev. 04.00 — 17 June 2004 10 of 20
Figure 5-2: Windows Reporting of the Self-Powered Mode
5.8. I2C-Bus Interface
The ISP1521 can use either its USB descriptors from the internal ROM, or from an external I2C-
BusTM EEPROM or microcontroller. Mode selection is done through jumpers J11and J12 (see
Table 5-3).
Table 5-3: Mode Selection Using J11 and J12
*—Default settings.
An external I2C-Bus controller acting as a master can also be used to update hub descriptors
through the CN1 connector.
Note: The I2C-Bus external EEPROM cannot be programmed on-board.
J11 J12 Mode SCL SDA
ON ON Internal ROM LOW LOW
OFF OFF I2C-Bus EEPROM* HIGH HIGH
Ce manuel convient aux modèles suivants
1
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