Philips ISP1520 User Manual

UM10014_4

Semiconductors

ISP1520 Hi-Speed USB Hub Demo Board

Rev. 04.00 — 11 May 2004 User manual

Document information

Info Content
Keywords
Abstract

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

.

Philips Semiconductors

Revision history

Rev Date Description

4.0 May 11, 2004 Updated the schematic.

3.0 April 14, 2004 Updated the following:

• Section 2

• Section 4

• Section 5.5

• Section 6

1.1 Feb 2003 Updated Section 5.5 and Section 6.

1.0 Nov. 2002 First release.

ISP1520 Hi-Speed USB Hub Demo Board

Contact information

For additional information, please visit: http://www.semiconductors.philips.com/

UM10014_4

For sales office addresses, please send an email to: [e-mail]

User manual Rev. 04.00 — 11 May 2004 2 of 18

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

Philips Semiconductors

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:

ISP1520 Hi-Speed USB Hub Demo Board

UM10014_4

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
NONINFRINGEMENT. THE ENTIRE RISK ARISING OUT OF THE USE OR PERFORMANCE OF THE
PRODUCT AND DOCUMENTATION REMAINS WITH THE RECIPIENT. TO THE MAXIMUM EXTENT
PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL PHILIPS SEMICONDUCTORS OR ITS SUPPLIERS BE
LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, DIRECT, INDIRECT, SPECIAL, PUNITIVE, OR OTHER
DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS
PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS)
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.

User manual Rev. 04.00 — 11 May 2004 3 of 18

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

Philips Semiconductors

ISP1520 Hi-Speed USB Hub Demo Board

UM10014_4

Contents

1. Introduction...............................................................................................................................................................................5

2. ISP1520 Hub demo board Features......................................................................................................................................5

3. System Requirements...............................................................................................................................................................6

4. Power Supply Adapter Requirements..................................................................................................................................6

5. Hub demo board Description................................................................................................................................................6

5.1. ISP1520 64-Pin TQFP Package......................................................................................................................................6

5.2. GoodLink Indicator.........................................................................................................................................................7

5.3. Port Power Switch Transistors.....................................................................................................................................7

5.4. Overcurrent Circuit Detection....................................................................................................................................7

5.5. Power Supply....................................................................................................................................................................8

5.6. I2C-Bus Interface..............................................................................................................................................................9

6. Schematics................................................................................................................................................................................10

7. Installing the Board.................................................................................................................................................................17

8. Bill of Materials for the ISP1520 Hub demo board..........................................................................................................18

9. References................................................................................................................................................................................18

GoodLink and I

2

C-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 b e the trademarks of their
respective owners. All other names, products, and trademarks are the property of their respectiv e owners.

User manual Rev. 04.00 — 11 May 2004 4 of 18

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

Philips Semiconductors

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).

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

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

TM

• USB traffic indication (GoodLink

User manual Rev. 04.00 — 11 May 2004 5 of 18

LED) on the upstream facing port

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

Philips Semiconductors

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.

Warning: If you are using the board version 02170-2, make sure that the power plug polarity is

(+) at the core and (-) at the outer shield.

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

5. Hub demo board Description

5.1. ISP1520 64-Pin TQFP Package

The ISP1520 has the following port configurations:

• One Hi-Speed USB and Original USB capable upstream facing port (USB0), and

• Four Hi-Speed USB and Original USB capable downstream facing ports (USB1, USB2, USB3,

USB4).

The downstream facing ports USB3 and USB4 can be disabled. By design, ports USB1 and USB2
cannot be disabled.

Table 5-1 shows the jumper setting versus port activation.

Table 5-1: Jumper Setting vs. Port Activation

J6, J5 Active Ports

OFF, OFF 1, 2, 3, 4*

ON, ON 1, 2

*—Default settings.

User manual Rev. 04.00 — 11 May 2004 6 of 18

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

Philips Semiconductors

5.2. GoodLink Indicator

A Philips GoodLink LED D15 (red) is located near the upstream facing port. This LED bl inks on
every successful USB transaction.

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

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. Overcurrent Circuit Detection

The integrated analog overcurrent detection circuit of the ISP1520 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 ISP1520 Hi-Speed Universal Serial
Bus hub controller data sheet.

User manual Rev. 04.00 — 11 May 2004 7 of 18

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

Philips Semiconductors

The hub demo board also contains an option to disable th e 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).

Table 5-2: Overcurrent Detection Selection Using NOOC

NOOC Overcurrent Detection Logic State

ON YES 0 (LOW)

OFF NO 1 (HIGH)

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

Then, desolder R28, R29, R30 and R31, and solder R32, R33, R34 and R36 on the PCB (see
schematics).

As a lower cost alternative, there are provisions on the board to use polyswitches to handle
overcurrent conditions. In this case the port switching transistors are bypassed. If this solution is
preferred, then the overcurrent detection circuit inside the chip must be switched to the digital
mode

Table 5-3: Mode Selection Using ADOC

ADOC Mode Logic State

ON Digital 0 (LOW)

OFF Analog* 1 (HIGH)

*—
Default
settings.

5.5. Power Supply

This hub demo board can be used as a self-powered USB hub. When used as a self-powered hub,
use the provided power supply.

The SW1 switch sets the powering mode in the hub’s descriptors; see Table 5-4.

User manual Rev. 04.00 — 11 May 2004 8 of 18

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

Philips Semiconductors

Table 5-4: Power Mode Selection Using SW1

ISP1520 Hi-Speed USB Hub Demo Board

SW1 Power Mode

S

B

Self-powered*

Ignore

UM10014_4

*—
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 I2C-

TM

EEPROM or microcontroller. Mode selection is done through jumpers J1and J2 (see Table

bus
5-5:).

Table 5-5: Mode Selection Using J1 and I2

J1 J2 Mode SCL SDA

ON ON
OFF OFF

*—Default settings.

User manual Rev. 04.00 — 11 May 2004 9 of 18

Internal ROM LOW LOW

2

I

C-bus EEPROM* HIGH HIGH

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

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

An external I
through the J42 connector.

The J10 jumper is connected to the “Write Protect” pin of the I
Controller and the EEPROM have different I
on-board, select the jumper according to Table 5-6. It is recommended that you program the

2

C-bus EEPROM before connecting the hub to USB through the USB host.

I
For convenience, the hub demo board is equipped with a socket for this compo nent, allowing

easy programming using a universal EPROM programmer as well.

Table 5-6: EEPROM Programming

6. Schematics

2

C-bus controller acting as a master can also be used to update hub descriptors

2

C-bus device addresses. To program this IC

J10 WP_N

ON Write enable

OFF Write protect

2

C-bus EEPROM. The Hub

User manual Rev. 04.00 — 11 May 2004 10 of 18

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

1

2

3

4

5

6

7

8

VDN

R5
500K

A A

R105
NC

V3. 3REG

0. 1uFC1

0. 1uFC2

0. 1uFC3

V3.3R EG

0. 1uFC4

Qrp u NPN

R12

10K

100KR15

V3.3R EG

0. 1uFC5

SUSPEND

OC1
OC2
OC3
OC4

PSW1
PSW2
PSW3
PSW4

R13
NC

100KR37

NOOC
JUMPER

OC1
OC2
OC3
OC4

PSW1
PSW2
PSW3
PSW4

1K5, 5%

R10

12K, 1%

C6

0. 1uF

SP/BP

V3. 3REG

100KR14

ADOC
JUMPER

VBU S

RVbus

5K6

VDN

C20

0.1 uF

V3. 3REG

V3. 3REG

B B

C C

D D

OC pr otectio n : No JUM PER

No OC prot ecti on : JUMPER

1

8

TES T_HI GH

9

VCC1

13

VCC2

23

VCC3

38

TES T_HI GH

39

VCC1

45

VCC2

57

VCC3

11

VCC4

41

VCC4

24

VCC5

56

VCC5

19

OC1

29

OC2

27

OC3

25

OC4

20

PSW1

30

PSW2

28

PSW3

26

PSW4

5

RPU

7

R11

ADOC

RREF

Analog OC : No JUMPER

Digital OC : JUMPER

2

RESET31HP

17

NOOC

50

GRN 160GRN 254GRN 352GRN 4

SP/BP18SUSPEND1ADOC32NOOC

DGND21DGND22DGND58DGND59AGND2AGND6AGND10AGND14AGND35AGND40AGND42AGND

49

SP/BP

ADOC

0.1u FC7

A0
A1
A2
GND

AT24 C01

4
3
2
1

J42
SIP_4P

VCC

SCL

SDA

U15

WP

1
2
3
4

AM B161AM B255AM B353AM B4

VDN

R9

8
7
6
5

51

TES T_HI GH

VDN

62

330R

DM0

HUB GL

DM1

DM2

DM3

DM4

XTAL1
XTAL2

SDA

R35
NC

D15
RED

DP0

DP1

DP2

DP3

DP4

SCL

46

VBU S1

VBU S2

3
4

15
16

36
37

43
44

47
48

DM0
DP0

DM1
DP1

DM2
DP2

DM3
DP3

DM4
DP4

DM0
DP0

DM1
DP1

DM2
DP2

DM3
DP3

DM4
DP4

VBU S3

J5 & J6 : To disable port#3 & port#4

J6

J5

12

33
34

63
64

R16

R17

2K2

2K2

V3. 3REG

X1
12M Hz

VBU S4

C8

22pF

C9

22pF

ESD 1

REF11I/O1

4

I/O2

REF2

HEADE R 3

DM1
DP1

DM2
DP2

ESD 2

REF11I/O1

4

I/O2

REF2

HEADE R 3

ESD 3

REF11I/O1

4

I/O2

REF2

HEADE R 3

DM3
DP3

DM4
DP4

ESD 4

REF11I/O1

4

I/O2

REF2

HEADE R 3

USB0

CHASSIS

ESD 5

4

REF2

C10
1uF

REF11I/O1

HEADE R 3

VBU S

GND

USB_U P

1

VBU S
DM0

2

D-

DP0

3

D+

4
5

3

I/O2

2

15KR18

DM3
DP3

DM4
DP4

15KR19

A2
A3

B2
B3

15KR20

15KR21

15KR22

15KR23

15KR24

15KR25

DM0
DP0

2

3

DM1
DP1

DM2
DP2

2

3

2

3

2

3

A5

B5

VBU S
VBU S

D-

CHASSIS

CHASSIS

D+

D­D+

GND
GND

CHASSIS

CHASSIS

USB_D OWN
USB1

A6

B6

A5

B5

VBU S

D­D+

D­D+

PWR_C1

DC_ IN

CHASSIS

CHASSIS

A6

B6

SP/BP

VBU S

CHASSIS

GND
GND

CHASSIS

USB_D OWN
USB2

VCC5

1
2
3

A2
A3

B2
B3

No E EPROM used: J1 & J2

J2

J1

J10

3

EEPROM used: No J1 & J2

4

5

6

Alternative solution for OC

A1

VBU S1
VBU S2

B1

C11
100u F

B4
A4

C12

100u F

F1

POLYSWITCH

R28

0 R

Q1

8

D1

7

D1

6

D2

5

NTHD5 90 5T1

R29

0 R
F2

POLYSWITCH

G1

G24D2

Alternative solu tion for OC

Alternative solu tion for OC

F3

POLYSWITCH

VBU S3

A1

VBU S4

B1

C13
100u F

B4
A4

C14

100u F

R30

0 R

Q2

NTHD5 905T 1

R31

0 R
F4

POLYSWITCH

Alternative solu tion for OC

VDN

SW1
SP/BP#

1 2

3 4

5 6

VBU S

L1

C15
1uF

U2

Title

A3

Date: 2004-04-27 Sheet of
File: C:\My NoteBook Raw\..\1520MINI_UPDATE.SCHDOCDrawn By:

XC6 206P 302

VIN2VOUT

ISP1520 BUS POWER EVAL. KIT

Numb er Revis ionSize

7

Solder R32 to d isable OC detection for port1

VDN

VDN

1

S1

2
3

S2

VDN

VDN

R32

NC

OC1

PSW2

PSW1

VDN

R33

NC

OC2

Solder R33 to disable OC detection for port2

Solder R34 to disable OC detection for port3

VDN

R34

NC

VDN

PSW3

PSW4

R36

NC

VDN

Solder R36 to disable OC detection for port4

V3. 3REG

3

VSS

1

C16
1uF

VDN

OC3

VDN

OC4

8

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

Component Placement

User manual Rev. 04.00 — 11 May 2004 12 of 18

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UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

Layer 1: Top Routing

User manual Rev. 04.00 — 11 May 2004 13 of 18

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UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

Layer 2: Ground Planes

User manual Rev. 04.00 — 11 May 2004 14 of 18

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

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UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

Layer3: Power Planes

User manual Rev. 04.00 — 11 May 2004 15 of 18

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

Philips Semiconductors

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

Layer 4: Bottom Routing

User manual Rev. 04.00 — 11 May 2004 16 of 18

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

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7. Installing the Board

Assuming that you have already installed the USB host adapter (including drivers) on a co mputer
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.
After a while the GoodLink LED (D15) will start to blink. This indicates that the
enumeration process has successfully completed and the hub is now ready for use.

You can check the driver installation in the Device Manager window. To check whether the hub
is correctly installed in high-speed, select the View-Devices by connection command in the
Device Manager window.

UM10014_4

ISP1520 Hi-Speed USB Hub Demo Board

3. Plug in devices at the downstream facing ports.

User manual Rev. 04.00 — 11 May 2004 17 of 18

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

Philips Semiconductors

ISP1520 Hi-Speed USB Hub Demo Board

UM10014_4

8. Bill of Materials for the ISP1520 Hub demo board

Part Type Designator Footprint Description

0.1 F C1 C2 C3 C4 C5 C6 C7 C20 0603C Capacitor
0 Ώ R105 R32 R34 R31 R29 R30 R28 R33 R36 0603R —

1.5 kΏ, 5% R10 0603R —
1 F C10 REC1-2 Electrolytic capacitor

2.2 kΏ R16 R17 0603R —
10 kΏ R12 R13 0603R —
10 F C15 REC1-2 Electrolytic capacitor
12 kΏ, 1% R11 0603R —
12 MHz X1 XTAL7 Crystal
15 kΏ R20 R19 R18 R25 R22 R24 R23 R21 0603R —
22 pF C9 C8 0603C Capacitor
22 F C16 REC1-2 Electrolytic capacitor
100 kΏ R14 R15 R37 R5 R35 0603R —
100 F C11 C14 C12 C13 REC15-3 Electrolytic capacitor
330 Ώ R9 0603R —
AT24C01 U15 DIP8 —
BLM41P600S L1 1206CUST —
DC_IN PWR_C1 DC-JACK2 —
HEADER 3 ESD1 ESD2 ESD5 ESD4 ESD3 SOT-143 ESD protection *
ISP1520_LQFP64 U1 LQFP64 —
J1 J10 J1 RAD0.1 Jumper
J5 J5 RAD0.1 Jumper
J6 J6 RAD0.1 Jumper
J16 J2 RAD0.1 Jumper
JUMPER NOOC ADOC RAD0.1 Jumper
NCP1117 U2 TO-263/D2PAK —
NTHD5905T1 Q1 Q2 CHIPFET Logic level dual P-channel

MOSFET
POLYSWITCH F4 F2 F3 F1 POLYSWITCH —
RED D15 LED3 —
SIP_4P J42 PS24254-4 Connector
SP/BP# SW1 DIP6 —
USB_DOWN USB2 USB1 USB-TYPEA-737745 —
USB_UP USB0 USB-TYPEB —

9. References

• Universal Serial Bus Specification Rev. 2.0 (http://www.usb.org/)

• ISP1520 Hi-Speed Universal Serial Bus hub controller data sheet.

User manual Rev. 04.00 — 11 May 2004 18 of 18

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